From a5afab547c4bfc3dcaa709cff1df36683ac725d8 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Sun, 25 Jan 2026 14:40:36 +0100
Subject: [PATCH 01/12] add `integrationLsbSport` and `integrationLsbGender`,
 specify types for DOSB fields

---
 easyverein/models/member.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/easyverein/models/member.py b/easyverein/models/member.py
index b7c8a0d..3959032 100644
--- a/easyverein/models/member.py
+++ b/easyverein/models/member.py
@@ -63,7 +63,6 @@ class MemberBase(EasyVereinBase):
     paymentIntervallMonths: PositiveInt | Literal[-1] = 1
     useBalanceForMembershipFee: bool | None = None
     bulletinBoardNewPostNotification: bool | None = None
-    integrationDosbGender: Literal["m", "w", "d"] | None = None
     isApplication: bool | None = Field(default=None, alias="_isApplication")
     """
     Alias for `_isApplication` field. See [Pydantic Models](../usage.md#pydantic-models) for details.
@@ -83,8 +82,10 @@ class MemberBase(EasyVereinBase):
     Alias for `_editableByRelatedMembers` field. See [Pydantic Models](../usage.md#pydantic-models) for details.
     """
     sepaMandateFile: AnyHttpURL | str | None = None
-    # TODO: exact type is not specified in API docs
-    integrationDosbSport: list | None = None
+    integrationLsbSport: list[EasyVereinReference] | None = None
+    integrationLsbGender: Literal["m", "f", "d"] | None = None
+    integrationDosbSport: list[EasyVereinReference] | None = None
+    integrationDosbGender: Literal["m", "w", "d"] | None = None
     customFields: list[EasyVereinReference] | list[MemberCustomField] | None = None
     memberGroups: list[EasyVereinReference] | list[MemberMemberGroup] | None = None
 

From fc3901aeb85e25fb8b33ccd8ac3971f7841049f4 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Mon, 26 Jan 2026 22:31:31 +0100
Subject: [PATCH 02/12] extend `integrationLsbSport` and
 `integrationDosbGender` types; add `LsbDosbSport` model

---
 easyverein/models/base.py   | 9 +++++++++
 easyverein/models/member.py | 6 +++---
 2 files changed, 12 insertions(+), 3 deletions(-)

diff --git a/easyverein/models/base.py b/easyverein/models/base.py
index 46a6e8b..62e96cc 100644
--- a/easyverein/models/base.py
+++ b/easyverein/models/base.py
@@ -1,5 +1,6 @@
 from pydantic import BaseModel, Field, PositiveInt
 
+from .mixins.empty_strings_mixin import EmptyStringsToNone
 from ..core.types import DateTime, EasyVereinReference
 
 
@@ -15,3 +16,11 @@ class EasyVereinBase(BaseModel):
     """Alias for `_deleteAfterDate` field. See [Pydantic Models](../usage.md#pydantic-models) for details."""
     deletedBy: str | None = Field(default=None, alias="_deletedBy")
     """Alias for `_deletedBy` field. See [Pydantic Models](../usage.md#pydantic-models) for details."""
+
+
+
+
+class LsbDosbSport(EasyVereinBase, EmptyStringsToNone):
+    title: str | None = None
+    sportNumber: str | None = None
+    federationNumber: str | None = None
\ No newline at end of file
diff --git a/easyverein/models/member.py b/easyverein/models/member.py
index 3959032..a5b2c15 100644
--- a/easyverein/models/member.py
+++ b/easyverein/models/member.py
@@ -16,7 +16,7 @@
     FilterIntList,
     FilterStrList,
 )
-from .base import EasyVereinBase
+from .base import EasyVereinBase, LsbDosbSport
 from .mixins.empty_strings_mixin import EmptyStringsToNone
 from .mixins.required_attributes import required_mixin
 
@@ -82,10 +82,10 @@ class MemberBase(EasyVereinBase):
     Alias for `_editableByRelatedMembers` field. See [Pydantic Models](../usage.md#pydantic-models) for details.
     """
     sepaMandateFile: AnyHttpURL | str | None = None
-    integrationLsbSport: list[EasyVereinReference] | None = None
+    integrationLsbSport: list[EasyVereinReference] | list[LsbDosbSport] | None = None
     integrationLsbGender: Literal["m", "f", "d"] | None = None
     integrationDosbSport: list[EasyVereinReference] | None = None
-    integrationDosbGender: Literal["m", "w", "d"] | None = None
+    integrationDosbGender: Literal["m", "w", "d"] | list[LsbDosbSport] | None = None
     customFields: list[EasyVereinReference] | list[MemberCustomField] | None = None
     memberGroups: list[EasyVereinReference] | list[MemberMemberGroup] | None = None
 

From a33ca0a88100dfc2535b1e46056b17bb84764489 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Mon, 26 Jan 2026 22:43:00 +0100
Subject: [PATCH 03/12] format & lint

---
 easyverein/models/base.py | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/easyverein/models/base.py b/easyverein/models/base.py
index 62e96cc..ba3dc3c 100644
--- a/easyverein/models/base.py
+++ b/easyverein/models/base.py
@@ -1,7 +1,7 @@
 from pydantic import BaseModel, Field, PositiveInt
 
-from .mixins.empty_strings_mixin import EmptyStringsToNone
 from ..core.types import DateTime, EasyVereinReference
+from .mixins.empty_strings_mixin import EmptyStringsToNone
 
 
 class EasyVereinBase(BaseModel):
@@ -18,9 +18,7 @@ class EasyVereinBase(BaseModel):
     """Alias for `_deletedBy` field. See [Pydantic Models](../usage.md#pydantic-models) for details."""
 
 
-
-
 class LsbDosbSport(EasyVereinBase, EmptyStringsToNone):
     title: str | None = None
     sportNumber: str | None = None
-    federationNumber: str | None = None
\ No newline at end of file
+    federationNumber: str | None = None

From d8d74317cf0177b118153e1765f2bbf0c8ec2fe8 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Mon, 26 Jan 2026 22:48:28 +0100
Subject: [PATCH 04/12] Update `LsbDosbSport.title` to be non-optional

---
 easyverein/models/base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/easyverein/models/base.py b/easyverein/models/base.py
index ba3dc3c..b7af7be 100644
--- a/easyverein/models/base.py
+++ b/easyverein/models/base.py
@@ -19,6 +19,6 @@ class EasyVereinBase(BaseModel):
 
 
 class LsbDosbSport(EasyVereinBase, EmptyStringsToNone):
-    title: str | None = None
+    title: str
     sportNumber: str | None = None
     federationNumber: str | None = None

From caecba53a4df0005609518705ab255910ee5ff42 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Mon, 26 Jan 2026 22:50:35 +0100
Subject: [PATCH 05/12] add docstring to `LsbDosbSport` model

---
 easyverein/models/base.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/easyverein/models/base.py b/easyverein/models/base.py
index b7af7be..6b6a9c0 100644
--- a/easyverein/models/base.py
+++ b/easyverein/models/base.py
@@ -19,6 +19,10 @@ class EasyVereinBase(BaseModel):
 
 
 class LsbDosbSport(EasyVereinBase, EmptyStringsToNone):
+    """
+    Pydantic Model for a LSB/DOSB Sport.
+    """
+
     title: str
     sportNumber: str | None = None
     federationNumber: str | None = None

From 96b78637c2d73d094df15d25ffba913772ffa360 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Tue, 27 Jan 2026 22:22:24 +0100
Subject: [PATCH 06/12] Update `integrationLsbGender` type: replace 'f' with
 'w'

---
 easyverein/models/member.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/easyverein/models/member.py b/easyverein/models/member.py
index a5b2c15..732dd18 100644
--- a/easyverein/models/member.py
+++ b/easyverein/models/member.py
@@ -83,7 +83,7 @@ class MemberBase(EasyVereinBase):
     """
     sepaMandateFile: AnyHttpURL | str | None = None
     integrationLsbSport: list[EasyVereinReference] | list[LsbDosbSport] | None = None
-    integrationLsbGender: Literal["m", "f", "d"] | None = None
+    integrationLsbGender: Literal["m", "w", "d"] | None = None
     integrationDosbSport: list[EasyVereinReference] | None = None
     integrationDosbGender: Literal["m", "w", "d"] | list[LsbDosbSport] | None = None
     customFields: list[EasyVereinReference] | list[MemberCustomField] | None = None

From e9901a26181583499b7e6c090ccec5b179a72e16 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Wed, 28 Jan 2026 17:09:11 +0100
Subject: [PATCH 07/12] Add methods to set LSB/DOSB sports; introduce related
 models

---
 easyverein/models/__init__.py |  2 +-
 easyverein/models/member.py   | 21 +++++++++++++++++++++
 easyverein/modules/member.py  | 20 +++++++++++++++++++-
 3 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/easyverein/models/__init__.py b/easyverein/models/__init__.py
index c8fa722..960ef53 100644
--- a/easyverein/models/__init__.py
+++ b/easyverein/models/__init__.py
@@ -19,7 +19,7 @@
     InvoiceItemFilter,
     InvoiceItemUpdate,
 )
-from .member import Member, MemberCreate, MemberFilter, MemberUpdate
+from .member import Member, MemberCreate, MemberFilter, MemberSetLsb, MemberUpdate
 from .member_custom_field import (
     MemberCustomField,
     MemberCustomFieldCreate,
diff --git a/easyverein/models/member.py b/easyverein/models/member.py
index 732dd18..d23ccdb 100644
--- a/easyverein/models/member.py
+++ b/easyverein/models/member.py
@@ -190,6 +190,27 @@ class MemberFilter(BaseModel):
     search: str | None = None
 
 
+class MemberSetLsb(BaseModel):
+    """
+    Pydantic model used to set LSB sports for a member
+
+    Does not match the documentation, but works (with v2.0 in january 2026 at least)
+    """
+
+    lsbSport: list[str]
+
+
+class MemberSetDosb(BaseModel):
+    """
+    Pydantic model used to set LSB sports for a member
+
+    Does not match the documentation, but works (with v2.0 in january 2026 at least)
+    And for some reason, has another format than the set-lsb endpoint
+    """
+
+    dosb_sport: list[str]
+
+
 from .contact_details import ContactDetails  # noqa: E402
 from .member_custom_field import MemberCustomField  # noqa: E402
 from .member_member_group import MemberMemberGroup  # noqa: E402
diff --git a/easyverein/modules/member.py b/easyverein/modules/member.py
index a6a3756..e7f058a 100644
--- a/easyverein/modules/member.py
+++ b/easyverein/modules/member.py
@@ -8,8 +8,10 @@
 from easyverein.modules.member_member_group import MemberMemberGroupMixin
 
 from ..core.client import EasyvereinClient
-from ..models import Member, MemberCreate, MemberFilter, MemberUpdate
+from ..models import Member, MemberCreate, MemberFilter, MemberSetLsb, MemberUpdate
+from ..models.member import MemberSetDosb
 from .mixins.crud import CRUDMixin
+from .mixins.helper import get_id
 from .mixins.recycle_bin import RecycleBinMixin
 
 
@@ -25,3 +27,19 @@ def custom_field(self, member_id: int) -> MemberCustomFieldMixin:
 
     def member_group(self, member_id: int) -> MemberMemberGroupMixin:
         return MemberMemberGroupMixin(self.c, self.logger, member_id)
+
+    def set_lsb(self, target: Member | int, data: MemberSetLsb) -> None:
+        obj_id = get_id(target)
+
+        self.logger.info(f"Setting LSB sports for member {obj_id}")
+
+        url = self.c.get_url(f"/{self.endpoint_name}/{obj_id}/set-lsb")
+        self.c.update(url, data, status_code=204)
+
+    def set_dosb(self, target: Member | int, data: MemberSetDosb) -> None:
+        obj_id = get_id(target)
+
+        self.logger.info(f"Setting DOSB sports for member {obj_id}")
+
+        url = self.c.get_url(f"/{self.endpoint_name}/{obj_id}/set-dosb")
+        self.c.update(url, data, status_code=204)

From 12e52cb5b06e236fe5a91630b89c1909b2e0f1ab Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Thu, 29 Jan 2026 09:01:14 +0100
Subject: [PATCH 08/12] Add methods to set LSB/DOSB sports; introduce related
 models

---
 easyverein/models/__init__.py |  2 +-
 easyverein/models/base.py     |  2 +-
 easyverein/models/member.py   |  6 ++---
 tests/test_member.py          | 42 ++++++++++++++++++++++++++++++++++-
 4 files changed, 46 insertions(+), 6 deletions(-)

diff --git a/easyverein/models/__init__.py b/easyverein/models/__init__.py
index 960ef53..7281527 100644
--- a/easyverein/models/__init__.py
+++ b/easyverein/models/__init__.py
@@ -19,7 +19,7 @@
     InvoiceItemFilter,
     InvoiceItemUpdate,
 )
-from .member import Member, MemberCreate, MemberFilter, MemberSetLsb, MemberUpdate
+from .member import Member, MemberCreate, MemberFilter, MemberSetDosb, MemberSetLsb, MemberUpdate
 from .member_custom_field import (
     MemberCustomField,
     MemberCustomFieldCreate,
diff --git a/easyverein/models/base.py b/easyverein/models/base.py
index 6b6a9c0..1fddd7d 100644
--- a/easyverein/models/base.py
+++ b/easyverein/models/base.py
@@ -23,6 +23,6 @@ class LsbDosbSport(EasyVereinBase, EmptyStringsToNone):
     Pydantic Model for a LSB/DOSB Sport.
     """
 
-    title: str
+    title: str | None = None
     sportNumber: str | None = None
     federationNumber: str | None = None
diff --git a/easyverein/models/member.py b/easyverein/models/member.py
index d23ccdb..ee52cec 100644
--- a/easyverein/models/member.py
+++ b/easyverein/models/member.py
@@ -84,8 +84,8 @@ class MemberBase(EasyVereinBase):
     sepaMandateFile: AnyHttpURL | str | None = None
     integrationLsbSport: list[EasyVereinReference] | list[LsbDosbSport] | None = None
     integrationLsbGender: Literal["m", "w", "d"] | None = None
-    integrationDosbSport: list[EasyVereinReference] | None = None
-    integrationDosbGender: Literal["m", "w", "d"] | list[LsbDosbSport] | None = None
+    integrationDosbSport: list[EasyVereinReference] | list[LsbDosbSport] | None = None
+    integrationDosbGender: Literal["m", "w", "d"] | None = None
     customFields: list[EasyVereinReference] | list[MemberCustomField] | None = None
     memberGroups: list[EasyVereinReference] | list[MemberMemberGroup] | None = None
 
@@ -202,7 +202,7 @@ class MemberSetLsb(BaseModel):
 
 class MemberSetDosb(BaseModel):
     """
-    Pydantic model used to set LSB sports for a member
+    Pydantic model used to set DOSB sports for a member
 
     Does not match the documentation, but works (with v2.0 in january 2026 at least)
     And for some reason, has another format than the set-lsb endpoint
diff --git a/tests/test_member.py b/tests/test_member.py
index 208b7d2..bedd4fb 100644
--- a/tests/test_member.py
+++ b/tests/test_member.py
@@ -2,7 +2,7 @@
 from easyverein import EasyvereinAPI
 from easyverein.core.exceptions import EasyvereinAPINotFoundException
 from easyverein.models.contact_details import ContactDetails
-from easyverein.models.member import Member, MemberUpdate
+from easyverein.models.member import Member, MemberSetDosb, MemberSetLsb, MemberUpdate
 
 
 class TestMember:
@@ -75,3 +75,43 @@ def test_related_members(self, ev_connection: EasyvereinAPI):
         assert isinstance(reset_member, Member)
         assert isinstance(reset_member.relatedMembers, list)
         assert reset_member.relatedMembers == []
+
+
+class TestMemberSetLsb:
+    def test_set_lsb(self, ev_connection: EasyvereinAPI, example_member: Member):
+        assert example_member.id
+
+        # Set a LSB sport (assume ID "1" exists for testing)
+        ev_connection.member.set_lsb(example_member.id, MemberSetLsb(lsbSport=["1"]))
+
+        # Verify it's set
+        member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationLsbSport{id}}")
+        assert member.integrationLsbSport is not None
+        assert len(member.integrationLsbSport) > 0
+
+        # Unset it again
+        ev_connection.member.set_lsb(example_member.id, MemberSetLsb(lsbSport=[]))
+
+        # Verify it's unset
+        member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationLsbSport{id}}")
+        assert member.integrationLsbSport == []
+
+
+class TestMemberSetDosb:
+    def test_set_dosb(self, ev_connection: EasyvereinAPI, example_member: Member):
+        assert example_member.id
+
+        # Set a DOSB sport (assume ID "1" exists for testing)
+        ev_connection.member.set_dosb(example_member.id, MemberSetDosb(dosb_sport=["1"]))
+
+        # Verify it's set
+        member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationDosbSport{id}}")
+        assert member.integrationDosbSport is not None
+        assert len(member.integrationDosbSport) > 0
+
+        # Unset it again
+        ev_connection.member.set_dosb(example_member.id, MemberSetDosb(dosb_sport=[]))
+
+        # Verify it's unset
+        member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationDosbSport{id}}")
+        assert member.integrationDosbSport == []

From 66d739de12b0fe9a91e7a42eec69763be2c59f2b Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Thu, 29 Jan 2026 09:48:01 +0100
Subject: [PATCH 09/12] fix copy/paste errors in documentation

---
 docs/api/endpoints/billing_account.md     | 2 +-
 docs/api/endpoints/booking.md             | 4 ++--
 docs/api/endpoints/contact_details.md     | 2 +-
 docs/api/endpoints/custom_field.md        | 2 +-
 docs/api/endpoints/invoice_item.md        | 2 +-
 docs/api/endpoints/member.md              | 2 +-
 docs/api/endpoints/member_custom_field.md | 2 +-
 docs/api/endpoints/member_group.md        | 6 +++---
 docs/api/endpoints/member_member_group.md | 2 +-
 9 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/docs/api/endpoints/billing_account.md b/docs/api/endpoints/billing_account.md
index b411c6f..8ffeb12 100644
--- a/docs/api/endpoints/billing_account.md
+++ b/docs/api/endpoints/billing_account.md
@@ -8,7 +8,7 @@ None
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model          |
+| Generic Model     | BillingAccount Model   |
 |-------------------|------------------------|
 | `ModelType`       | `BillingAccount`       |
 | `CreateModelType` | `BillingAccountCreate` |
diff --git a/docs/api/endpoints/booking.md b/docs/api/endpoints/booking.md
index ac019e2..28978d6 100644
--- a/docs/api/endpoints/booking.md
+++ b/docs/api/endpoints/booking.md
@@ -8,8 +8,8 @@ None
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model          |
-|-------------------|------------------------|
+| Generic Model     | Booking Model   |
+|-------------------|-----------------|
 | `ModelType`       | `Booking`       |
 | `CreateModelType` | `BookingCreate` |
 | `UpdateModelType` | `BookingUpdate` |
diff --git a/docs/api/endpoints/contact_details.md b/docs/api/endpoints/contact_details.md
index 0ddb3b8..c91ed28 100644
--- a/docs/api/endpoints/contact_details.md
+++ b/docs/api/endpoints/contact_details.md
@@ -8,7 +8,7 @@ None
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model          |
+| Generic Model     | ContactDetails Model   |
 |-------------------|------------------------|
 | `ModelType`       | `ContactDetails`       |
 | `CreateModelType` | `ContactDetailsCreate` |
diff --git a/docs/api/endpoints/custom_field.md b/docs/api/endpoints/custom_field.md
index a79c109..ceaabc5 100644
--- a/docs/api/endpoints/custom_field.md
+++ b/docs/api/endpoints/custom_field.md
@@ -8,7 +8,7 @@ None
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model       |
+| Generic Model     | CustomField Model   |
 |-------------------|---------------------|
 | `ModelType`       | `CustomField`       |
 | `CreateModelType` | `CustomFieldCreate` |
diff --git a/docs/api/endpoints/invoice_item.md b/docs/api/endpoints/invoice_item.md
index 1449c6a..7e295db 100644
--- a/docs/api/endpoints/invoice_item.md
+++ b/docs/api/endpoints/invoice_item.md
@@ -8,7 +8,7 @@ None
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model       |
+| Generic Model     | InvoiceItem Model   |
 |-------------------|---------------------|
 | `ModelType`       | `InvoiceItem`       |
 | `CreateModelType` | `InvoiceItemCreate` |
diff --git a/docs/api/endpoints/member.md b/docs/api/endpoints/member.md
index 4f3689d..afeab9e 100644
--- a/docs/api/endpoints/member.md
+++ b/docs/api/endpoints/member.md
@@ -8,7 +8,7 @@ None
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model  |
+| Generic Model     | Member Model  |
 |-------------------|----------------|
 | `ModelType`       | `Member`       |
 | `CreateModelType` | `MemberCreate` |
diff --git a/docs/api/endpoints/member_custom_field.md b/docs/api/endpoints/member_custom_field.md
index 9eb5432..891191f 100644
--- a/docs/api/endpoints/member_custom_field.md
+++ b/docs/api/endpoints/member_custom_field.md
@@ -13,7 +13,7 @@ requires the member as constructor argument, to avoid passing it again to all en
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model             |
+| Generic Model     | MemberCustomField Model   |
 |-------------------|---------------------------|
 | `ModelType`       | `MemberCustomField`       |
 | `CreateModelType` | `MemberCustomFieldCreate` |
diff --git a/docs/api/endpoints/member_group.md b/docs/api/endpoints/member_group.md
index 922f48c..cf78163 100644
--- a/docs/api/endpoints/member_group.md
+++ b/docs/api/endpoints/member_group.md
@@ -8,9 +8,9 @@ None
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model  |
-|-------------------|----------------|
-| `ModelType`       | `MemberGroup`  |
+| Generic Model     | Invoice Model       |
+|-------------------|---------------------|
+| `ModelType`       | `MemberGroup`       |
 | `CreateModelType` | `MemberGroupCreate` |
 | `UpdateModelType` | `MemberGroupUpdate` |
 
diff --git a/docs/api/endpoints/member_member_group.md b/docs/api/endpoints/member_member_group.md
index 3757ad2..ff0cc43 100644
--- a/docs/api/endpoints/member_member_group.md
+++ b/docs/api/endpoints/member_member_group.md
@@ -13,7 +13,7 @@ requires the member as constructor argument, to avoid passing it again to all en
 
 ## Generic Model Mappings
 
-| Generic Model     | Invoice Model             |
+| Generic Model     | MemberMemberGroup Model   |
 |-------------------|---------------------------|
 | `ModelType`       | `MemberMemberGroup`       |
 | `CreateModelType` | `MemberMemberGroupCreate` |

From 235ff48a2cfb1f47c5fe0440314f6736f08a6f21 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Thu, 29 Jan 2026 09:56:07 +0100
Subject: [PATCH 10/12] shorten comments :)

---
 tests/test_member.py | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/tests/test_member.py b/tests/test_member.py
index bedd4fb..3f42be7 100644
--- a/tests/test_member.py
+++ b/tests/test_member.py
@@ -81,10 +81,10 @@ class TestMemberSetLsb:
     def test_set_lsb(self, ev_connection: EasyvereinAPI, example_member: Member):
         assert example_member.id
 
-        # Set a LSB sport (assume ID "1" exists for testing)
+        # Set a LSB sport
         ev_connection.member.set_lsb(example_member.id, MemberSetLsb(lsbSport=["1"]))
 
-        # Verify it's set
+        # Verify
         member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationLsbSport{id}}")
         assert member.integrationLsbSport is not None
         assert len(member.integrationLsbSport) > 0
@@ -92,7 +92,7 @@ def test_set_lsb(self, ev_connection: EasyvereinAPI, example_member: Member):
         # Unset it again
         ev_connection.member.set_lsb(example_member.id, MemberSetLsb(lsbSport=[]))
 
-        # Verify it's unset
+        # Verify
         member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationLsbSport{id}}")
         assert member.integrationLsbSport == []
 
@@ -101,17 +101,17 @@ class TestMemberSetDosb:
     def test_set_dosb(self, ev_connection: EasyvereinAPI, example_member: Member):
         assert example_member.id
 
-        # Set a DOSB sport (assume ID "1" exists for testing)
+        # Set a DOSB sport
         ev_connection.member.set_dosb(example_member.id, MemberSetDosb(dosb_sport=["1"]))
 
-        # Verify it's set
+        # Verify
         member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationDosbSport{id}}")
         assert member.integrationDosbSport is not None
         assert len(member.integrationDosbSport) > 0
 
-        # Unset it again
+        # Unset
         ev_connection.member.set_dosb(example_member.id, MemberSetDosb(dosb_sport=[]))
 
-        # Verify it's unset
+        # Verify
         member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationDosbSport{id}}")
         assert member.integrationDosbSport == []

From 090824460020664562420e4a0a206945937cb932 Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Thu, 29 Jan 2026 11:22:20 +0100
Subject: [PATCH 11/12] Add bulk create and update mixins; extend client
 methods for bulk operations

---
 easyverein/core/client.py         | 32 +++++++++++++++
 easyverein/modules/mixins/crud.py | 66 +++++++++++++++++++++++++++++++
 2 files changed, 98 insertions(+)

diff --git a/easyverein/core/client.py b/easyverein/core/client.py
index 1f8de45..40590e8 100644
--- a/easyverein/core/client.py
+++ b/easyverein/core/client.py
@@ -204,6 +204,38 @@ def update(self, url, data: BaseModel, status_code: int = 200, exclude_none: boo
             expected_status_code=status_code,
         )
 
+    def bulk_create(self, url, data: list[BaseModel], status_code: int = 201) -> ResponseSchema:
+        """
+        Method to create multiple objects in the API
+        """
+        return self._handle_response(
+            self._do_request(
+                "post",
+                url,
+                data={"entries": [d.model_dump(exclude_none=True, exclude_unset=True, by_alias=True) for d in data]},
+            ),
+            expected_status_code=status_code,
+        )
+
+    def bulk_update(
+        self, url, data: list[BaseModel], status_code: int = 200, exclude_none: bool = True
+    ) -> ResponseSchema:
+        """
+        Method to update multiple objects in the API
+        """
+        return self._handle_response(
+            self._do_request(
+                "patch",
+                url,
+                data={
+                    "entries": [
+                        d.model_dump(exclude_none=exclude_none, exclude_unset=True, by_alias=True) for d in data
+                    ]
+                },
+            ),
+            expected_status_code=status_code,
+        )
+
     def upload(
         self,
         url: str,
diff --git a/easyverein/modules/mixins/crud.py b/easyverein/modules/mixins/crud.py
index cb3bc71..c901728 100644
--- a/easyverein/modules/mixins/crud.py
+++ b/easyverein/modules/mixins/crud.py
@@ -194,3 +194,69 @@ def delete(
             self.logger.info(f"Deleting object of type {self.endpoint_name} with id {obj_id} from wastebasket")
             purge: Callable = getattr(self, "purge")
             purge(obj_id)
+
+
+class BulkUpdateCreateMixin(Generic[ModelType, CreateModelType, UpdateModelType]):
+    """
+    Mixin providing bulk create and update functionality for endpoints that support it.
+    Currently only supported for the `member` and `contact-details` endpoints.
+    """
+
+    def bulk_create(self: EVClientProtocol[ModelType], data: list[CreateModelType]) -> list[bool]:
+        """
+        Creates multiple objects in a single API request and returns the created objects.
+
+        **Example**:
+
+        ```py
+        from easyverein import EasyvereinAPI
+
+        ev_client = EasyvereinAPI("your_api_key")
+
+        contact_details = ev_client.contact_details.bulk_create([
+            ContactDetailsCreate(fistName="example1", lastName="Example1", isCompany=False),
+            ContactDetailsCreate(fistName="example2", lastName="Example2", isCompany=False),
+        ])
+        ```
+
+        Args:
+            data: List of Pydantic models containing the data for the objects to be created.
+        """
+        self.logger.info(f"Creating object of type {self.endpoint_name}")
+
+        url = self.c.get_url(f"/{self.endpoint_name}/bulk-create")
+        response = self.c.bulk_create(url, data)
+        return [r["data"]["success"] for r in response.result]  # type: ignore
+
+    def bulk_update(
+        self: EVClientProtocol[ModelType],
+        data: list[UpdateModelType],
+        exclude_none: bool = True,
+    ) -> list[bool]:
+        """
+        Updates multiple objects in a single API request and returns the updated objects.
+
+        Note that the update models must include the `id` of the objects to be updated.
+
+        **Example**:
+
+        ```py
+        from easyverein import EasyvereinAPI
+
+        ev_client = EasyvereinAPI("your_api_key")
+
+        updated_members = ev_client.member.bulk_update([
+            MemberUpdate(id=1, membershipNumber="M1"),
+            MemberUpdate(id=2, membershipNumber="M2"),
+        ])
+        ```
+
+        Args:
+            data: List of Pydantic models containing the data to update.
+            exclude_none: If True, fields with None values will be excluded from the update.
+        """
+        self.logger.info(f"Bulk updating objects of type {self.endpoint_name}")
+
+        url = self.c.get_url(f"/{self.endpoint_name}/bulk-update")
+        response = self.c.bulk_update(url, data, exclude_none=exclude_none)
+        return [r["success"] for r in response.result]  # type: ignore

From d2b6c37e52267c97bef87f7778e830a831a9748d Mon Sep 17 00:00:00 2001
From: maribue <127690431+Blumenkind111@users.noreply.github.com>
Date: Thu, 29 Jan 2026 13:11:44 +0100
Subject: [PATCH 12/12] Implemented Bulk-Endpoints in the modules and created
 tests

---
 easyverein/modules/booking.py         |  3 +-
 easyverein/modules/contact_details.py |  3 +-
 easyverein/modules/invoice.py         |  3 +-
 easyverein/modules/member.py          |  8 ++-
 easyverein/modules/mixins/crud.py     |  2 +-
 tests/conftest.py                     |  4 +-
 tests/test_booking.py                 | 93 +++++++++++++++++++++++++++
 tests/test_contact_details.py         | 56 ++++++++++++++++
 tests/test_filters.py                 |  5 +-
 tests/test_invoice.py                 | 73 +++++++++++++++++++++
 tests/test_member.py                  | 73 ++++++++++++++++++++-
 11 files changed, 312 insertions(+), 11 deletions(-)
 create mode 100644 tests/test_booking.py

diff --git a/easyverein/modules/booking.py b/easyverein/modules/booking.py
index b01f907..1560b07 100644
--- a/easyverein/modules/booking.py
+++ b/easyverein/modules/booking.py
@@ -11,12 +11,13 @@
     BookingFilter,
     BookingUpdate,
 )
-from .mixins.crud import CRUDMixin
+from .mixins.crud import BulkUpdateCreateMixin, CRUDMixin
 from .mixins.recycle_bin import RecycleBinMixin
 
 
 class BookingMixin(
     CRUDMixin[Booking, BookingCreate, BookingUpdate, BookingFilter],
+    BulkUpdateCreateMixin[Booking, BookingCreate, BookingUpdate],
     RecycleBinMixin[Booking],
 ):
     def __init__(self, client: EasyvereinClient, logger: logging.Logger):
diff --git a/easyverein/modules/contact_details.py b/easyverein/modules/contact_details.py
index f8e1120..447a86f 100644
--- a/easyverein/modules/contact_details.py
+++ b/easyverein/modules/contact_details.py
@@ -7,12 +7,13 @@
 from ..core.client import EasyvereinClient
 from ..models import ContactDetails, ContactDetailsCreate, ContactDetailsUpdate
 from ..models.contact_details import ContactDetailsFilter
-from .mixins.crud import CRUDMixin
+from .mixins.crud import BulkUpdateCreateMixin, CRUDMixin
 from .mixins.recycle_bin import RecycleBinMixin
 
 
 class ContactDetailsMixin(
     CRUDMixin[ContactDetails, ContactDetailsCreate, ContactDetailsUpdate, ContactDetailsFilter],
+    BulkUpdateCreateMixin[ContactDetails, ContactDetailsCreate, ContactDetailsUpdate],
     RecycleBinMixin[ContactDetails],
 ):
     def __init__(self, client: EasyvereinClient, logger: logging.Logger):
diff --git a/easyverein/modules/invoice.py b/easyverein/modules/invoice.py
index f1328ac..de5e287 100644
--- a/easyverein/modules/invoice.py
+++ b/easyverein/modules/invoice.py
@@ -11,12 +11,13 @@
 from ..core.exceptions import EasyvereinAPIException
 from ..models.invoice import Invoice, InvoiceCreate, InvoiceFilter, InvoiceUpdate
 from ..models.invoice_item import InvoiceItemCreate
-from .mixins.crud import CRUDMixin
+from .mixins.crud import BulkUpdateCreateMixin, CRUDMixin
 from .mixins.recycle_bin import RecycleBinMixin
 
 
 class InvoiceMixin(
     CRUDMixin[Invoice, InvoiceCreate, InvoiceUpdate, InvoiceFilter],
+    BulkUpdateCreateMixin[Invoice, InvoiceCreate, InvoiceUpdate],
     RecycleBinMixin[Invoice],
 ):
     def __init__(self, client: EasyvereinClient, logger: logging.Logger):
diff --git a/easyverein/modules/member.py b/easyverein/modules/member.py
index e7f058a..28aeba2 100644
--- a/easyverein/modules/member.py
+++ b/easyverein/modules/member.py
@@ -10,12 +10,16 @@
 from ..core.client import EasyvereinClient
 from ..models import Member, MemberCreate, MemberFilter, MemberSetLsb, MemberUpdate
 from ..models.member import MemberSetDosb
-from .mixins.crud import CRUDMixin
+from .mixins.crud import BulkUpdateCreateMixin, CRUDMixin
 from .mixins.helper import get_id
 from .mixins.recycle_bin import RecycleBinMixin
 
 
-class MemberMixin(CRUDMixin[Member, MemberCreate, MemberUpdate, MemberFilter], RecycleBinMixin[Member]):
+class MemberMixin(
+    CRUDMixin[Member, MemberCreate, MemberUpdate, MemberFilter],
+    BulkUpdateCreateMixin[Member, MemberCreate, MemberUpdate],
+    RecycleBinMixin[Member],
+):
     def __init__(self, client: EasyvereinClient, logger: logging.Logger):
         self.endpoint_name = "member"
         self.c = client
diff --git a/easyverein/modules/mixins/crud.py b/easyverein/modules/mixins/crud.py
index c901728..58e3cd2 100644
--- a/easyverein/modules/mixins/crud.py
+++ b/easyverein/modules/mixins/crud.py
@@ -259,4 +259,4 @@ def bulk_update(
 
         url = self.c.get_url(f"/{self.endpoint_name}/bulk-update")
         response = self.c.bulk_update(url, data, exclude_none=exclude_none)
-        return [r["success"] for r in response.result]  # type: ignore
+        return [r["data"]["success"] for r in response.result]  # type: ignore
diff --git a/tests/conftest.py b/tests/conftest.py
index a3a6f77..379262c 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -18,7 +18,7 @@ def ev_connection():
 
 @pytest.fixture(scope="module", autouse=True)
 def _clear_wastebaskets(ev_connection: EasyvereinAPI):
-    for module in ["member_group", "custom_field", "contact_details", "billing_account"]:
+    for module in ["member", "member_group", "custom_field", "contact_details", "billing_account"]:
         deleted, _ = getattr(ev_connection, module).get_deleted()
         for d in deleted:
             getattr(ev_connection, module).purge(d)
@@ -26,7 +26,7 @@ def _clear_wastebaskets(ev_connection: EasyvereinAPI):
 
 @pytest.fixture(scope="function")
 def random_string():
-    return "".join(random.choice(string.ascii_uppercase + string.digits) for _ in range(16))
+    return "test_" + "".join(random.choice(string.ascii_uppercase + string.digits) for _ in range(16))
 
 
 @pytest.fixture(scope="module")
diff --git a/tests/test_booking.py b/tests/test_booking.py
new file mode 100644
index 0000000..45aa4c6
--- /dev/null
+++ b/tests/test_booking.py
@@ -0,0 +1,93 @@
+import datetime
+from typing import Generator
+
+import pytest
+from easyverein import EasyvereinAPI
+from easyverein.models import Booking, BookingCreate, BookingUpdate
+
+
+@pytest.fixture(scope="module", autouse=True)
+def _remove_test_bookings(ev_connection: EasyvereinAPI) -> Generator[None, None, None]:
+    yield
+    for b in ev_connection.booking.get_all(query="{id,receiver}"):
+        if b.receiver and b.receiver.lower().startswith("test_"):
+            ev_connection.booking.delete(b, delete_from_recycle_bin=True)
+
+
+class TestBooking:
+    def test_get_bookings(self, ev_connection: EasyvereinAPI):
+        bookings, total_count = ev_connection.booking.get()
+        assert isinstance(bookings, list)
+
+    def test_create_booking_minimal(self, ev_connection: EasyvereinAPI, random_string: str):
+        booking_model = BookingCreate(
+            receiver=f"test_{random_string}",
+            date=datetime.date.today(),
+            amount=100.0,
+        )
+
+        booking = ev_connection.booking.create(booking_model)
+        assert isinstance(booking, Booking)
+        assert booking.receiver == booking_model.receiver
+
+        ev_connection.booking.delete(booking, delete_from_recycle_bin=True)
+
+
+class TestBookingBulk:
+    def test_bulk_create(self, ev_connection: EasyvereinAPI, random_string: str):
+        name = random_string
+        booking_data = [
+            BookingCreate(
+                receiver=f"test_{name}1",
+                date=datetime.date.today(),
+                amount=100.0,
+            ),
+            BookingCreate(
+                receiver=f"test_{name}2",
+                date=datetime.date.today(),
+                amount=200.0,
+            ),
+        ]
+
+        successes = ev_connection.booking.bulk_create(booking_data)
+        assert successes == [True, True]
+
+        created_bookings = [
+            b
+            for b in ev_connection.booking.get_all(query="{id,receiver}")
+            if b.receiver and b.receiver.startswith(f"test_{name}")
+        ]
+
+        assert len(created_bookings) == 2
+
+    def test_bulk_update(self, ev_connection: EasyvereinAPI, random_string: str):
+        # Create two bookings
+        name = random_string
+        b1 = ev_connection.booking.create(
+            BookingCreate(
+                receiver=f"test_{name}3",
+                date=datetime.date.today(),
+                amount=300.0,
+            )
+        )
+        b2 = ev_connection.booking.create(
+            BookingCreate(
+                receiver=f"test_{name}4",
+                date=datetime.date.today(),
+                amount=400.0,
+            )
+        )
+
+        update_data = [
+            BookingUpdate(id=b1.id, description="Updated Description 1"),
+            BookingUpdate(id=b2.id, description="Updated Description 2"),
+        ]
+
+        successes = ev_connection.booking.bulk_update(update_data)
+        assert successes == [True, True]
+
+        updated_b1 = ev_connection.booking.get_by_id(b1.id)  # type: ignore
+        updated_b2 = ev_connection.booking.get_by_id(b2.id)  # type: ignore
+
+        assert updated_b1.description == "Updated Description 1"
+        assert updated_b2.description == "Updated Description 2"
diff --git a/tests/test_contact_details.py b/tests/test_contact_details.py
index 795ff54..3943849 100644
--- a/tests/test_contact_details.py
+++ b/tests/test_contact_details.py
@@ -1,7 +1,18 @@
+from typing import Generator
+
+import pytest
 from easyverein import EasyvereinAPI
 from easyverein.models import ContactDetails, ContactDetailsCreate, ContactDetailsUpdate
 
 
+@pytest.fixture(scope="module", autouse=True)
+def _remove_test_contacts(ev_connection: EasyvereinAPI) -> Generator[None, None, None]:
+    yield
+    for c in ev_connection.contact_details.get_all(query="{id,firstName}"):
+        if c.firstName and c.firstName.lower().startswith("test_"):
+            ev_connection.contact_details.delete(c, delete_from_recycle_bin=True)
+
+
 class TestContactDetails:
     def test_get_contact_details(self, ev_connection: EasyvereinAPI):
         contact_details, total_count = ev_connection.contact_details.get()
@@ -69,3 +80,48 @@ def test_create_minimal_personal_contact_details(self, ev_connection: Easyverein
 
         # Delete the contact details again
         ev_connection.contact_details.delete(contact_details, delete_from_recycle_bin=True)
+
+
+class TestContactDetailsBulk:
+    def test_bulk_create(self, ev_connection: EasyvereinAPI, random_string: str):
+        name = random_string
+        contact_details_data = [
+            ContactDetailsCreate(firstName=f"test_{name}1", familyName="Person", isCompany=False),
+            ContactDetailsCreate(firstName=f"test_{name}2", familyName="Person", isCompany=False),
+        ]
+
+        successes = ev_connection.contact_details.bulk_create(contact_details_data)
+        assert successes == [True, True]
+
+        created_contacts = [
+            c
+            for c in ev_connection.contact_details.get_all(query="{id,firstName}")
+            if c.firstName and c.firstName.startswith(f"test_{name}")
+        ]
+
+        assert isinstance(created_contacts, list)
+        assert len(created_contacts) == 2
+
+    def test_bulk_update(self, ev_connection: EasyvereinAPI, random_string: str):
+        # We need some contacts to update. Let's create two.
+        name = random_string
+        c1 = ev_connection.contact_details.create(
+            ContactDetailsCreate(firstName=f"test_{name}3", familyName="Person", isCompany=False)
+        )
+        c2 = ev_connection.contact_details.create(
+            ContactDetailsCreate(firstName=f"test_{name}4", familyName="Person", isCompany=False)
+        )
+
+        update_data = [
+            ContactDetailsUpdate(id=c1.id, street="Test Street 1"),
+            ContactDetailsUpdate(id=c2.id, street="Test Street 2"),
+        ]
+
+        successes = ev_connection.contact_details.bulk_update(update_data)
+        assert successes == [True, True]
+
+        updated_c1 = ev_connection.contact_details.get_by_id(c1.id)  # type: ignore
+        updated_c2 = ev_connection.contact_details.get_by_id(c2.id)  # type: ignore
+
+        assert updated_c1.street == "Test Street 1"
+        assert updated_c2.street == "Test Street 2"
diff --git a/tests/test_filters.py b/tests/test_filters.py
index 09c761e..25d8b94 100644
--- a/tests/test_filters.py
+++ b/tests/test_filters.py
@@ -24,7 +24,10 @@ def validate_response(response: tuple[list[Any], int], model: type, num_expected
             assert isinstance(instance, model)
 
     def test_filter_invoices(self, ev_connection: EasyvereinAPI):
-        search = InvoiceFilter(invNumber__in=["1", "2"], canceledInvoice__isnull=True, isDraft=False)
+        inv_numbers = [iv.invNumber for iv in ev_connection.invoice.get_all()[:2]]
+        assert [ivn is not None for ivn in inv_numbers]
+
+        search = InvoiceFilter(invNumber__in=inv_numbers, canceledInvoice__isnull=True, isDraft=False)
 
         TestFilter.validate_response(ev_connection.invoice.get(search=search), Invoice, 2)
 
diff --git a/tests/test_invoice.py b/tests/test_invoice.py
index b4f4a36..0d60f52 100644
--- a/tests/test_invoice.py
+++ b/tests/test_invoice.py
@@ -1,4 +1,5 @@
 import datetime
+from typing import Generator
 
 import pytest
 from _pytest.fixtures import FixtureRequest
@@ -11,6 +12,14 @@
 from requests.structures import CaseInsensitiveDict
 
 
+@pytest.fixture(scope="module", autouse=True)
+def _remove_test_invoices(ev_connection: EasyvereinAPI) -> Generator[None, None, None]:
+    yield
+    for i in ev_connection.invoice.get_all(query="{id,invNumber}"):
+        if i.invNumber and i.invNumber.lower().startswith("test_"):
+            ev_connection.invoice.delete(i, delete_from_recycle_bin=True)
+
+
 class TestInvoices:
     def test_get_invoices(self, ev_connection: EasyvereinAPI):
         invoices, total_count = ev_connection.invoice.get()
@@ -257,3 +266,67 @@ def test_create_invoice_with_attachment(
         # Purge invoice from wastebasket
         assert invoice.id is not None
         ev_connection.invoice.purge(invoice.id)
+
+
+class TestInvoiceBulk:
+    def test_bulk_create(self, ev_connection: EasyvereinAPI, random_string: str):
+        name = random_string
+        invoice_data = [
+            InvoiceCreate(
+                invNumber=f"test_{name}1",
+                receiver="Test Receiver 1",
+                totalPrice=100,
+                isDraft=True,
+            ),
+            InvoiceCreate(
+                invNumber=f"test_{name}2",
+                receiver="Test Receiver 2",
+                totalPrice=200,
+                isDraft=True,
+            ),
+        ]
+
+        successes = ev_connection.invoice.bulk_create(invoice_data)
+        assert successes == [True, True]
+
+        created_invoices = [
+            i
+            for i in ev_connection.invoice.get_all(query="{id,invNumber}")
+            if i.invNumber and i.invNumber.startswith(f"test_{name}")
+        ]
+
+        assert len(created_invoices) == 2
+
+    def test_bulk_update(self, ev_connection: EasyvereinAPI, random_string: str):
+        # Create two invoices
+        name = random_string
+        i1 = ev_connection.invoice.create(
+            InvoiceCreate(
+                invNumber=f"test_{name}3",
+                receiver="Test Receiver 3",
+                totalPrice=300,
+                isDraft=True,
+            )
+        )
+        i2 = ev_connection.invoice.create(
+            InvoiceCreate(
+                invNumber=f"test_{name}4",
+                receiver="Test Receiver 4",
+                totalPrice=400,
+                isDraft=True,
+            )
+        )
+
+        update_data = [
+            InvoiceUpdate(id=i1.id, description="Updated Description 1"),
+            InvoiceUpdate(id=i2.id, description="Updated Description 2"),
+        ]
+
+        successes = ev_connection.invoice.bulk_update(update_data)
+        assert successes == [True, True]
+
+        updated_i1 = ev_connection.invoice.get_by_id(i1.id)  # type: ignore
+        updated_i2 = ev_connection.invoice.get_by_id(i2.id)  # type: ignore
+
+        assert updated_i1.description == "Updated Description 1"
+        assert updated_i2.description == "Updated Description 2"
diff --git a/tests/test_member.py b/tests/test_member.py
index 3f42be7..8515bf7 100644
--- a/tests/test_member.py
+++ b/tests/test_member.py
@@ -1,8 +1,21 @@
+from datetime import date, datetime, timedelta
+from typing import Generator
+
 import pytest
 from easyverein import EasyvereinAPI
 from easyverein.core.exceptions import EasyvereinAPINotFoundException
-from easyverein.models.contact_details import ContactDetails
-from easyverein.models.member import Member, MemberSetDosb, MemberSetLsb, MemberUpdate
+from easyverein.models.contact_details import ContactDetails, ContactDetailsCreate
+from easyverein.models.member import Member, MemberCreate, MemberSetDosb, MemberSetLsb, MemberUpdate
+
+
+@pytest.fixture(scope="module", autouse=True)
+def _remove_test_members_and_cas(ev_connection: EasyvereinAPI) -> Generator[None, None, None]:
+    yield
+
+    for m in ev_connection.member.get_all(query="{id,contactDetails{firstName,id}}"):
+        if not isinstance(m.contactDetails.firstName, str) and m.contactDetails.firstName.lower().startswith("test_"):  # type: ignore
+            ev_connection.member.delete(m, delete_from_recycle_bin=True)
+            ev_connection.contact_details.delete(m.contactDetails, delete_from_recycle_bin=True)  # type: ignore
 
 
 class TestMember:
@@ -115,3 +128,59 @@ def test_set_dosb(self, ev_connection: EasyvereinAPI, example_member: Member):
         # Verify
         member = ev_connection.member.get_by_id(example_member.id, query="{id,integrationDosbSport{id}}")
         assert member.integrationDosbSport == []
+
+
+class TestMemberBulk:
+    def test_bulk_create(self, ev_connection: EasyvereinAPI, example_member: Member, random_string: str):
+        name = random_string
+        ev_connection.contact_details.bulk_create(
+            [
+                ContactDetailsCreate(firstName=f"test_{name}1", familyName="Member", isCompany=False),
+                ContactDetailsCreate(firstName=f"test_{name}2", familyName="Member", isCompany=False),
+            ]
+        )
+        cds = [
+            c
+            for c in ev_connection.contact_details.get_all(query="{id,firstName}")
+            if c.firstName and c.firstName.startswith(f"test_{name}")
+        ]
+
+        member_data = [
+            MemberCreate(emailOrUserName=f"test_{name}1@example.com", contactDetails=cds[0].id),
+            MemberCreate(emailOrUserName=f"test_{name}2@example.com", contactDetails=cds[1].id),
+        ]
+
+        successes = ev_connection.member.bulk_create(member_data)
+        assert successes == [True, True]
+
+        created_members = [
+            m
+            for m in ev_connection.member.get_all(query="{id,contactDetails{firstName}}")
+            if m.contactDetails.firstName and m.contactDetails.firstName.startswith(f"test_{name}")  # type: ignore
+        ]
+
+        assert isinstance(created_members, list)
+        assert len(created_members) == 2
+
+    def test_bulk_update(self, ev_connection: EasyvereinAPI):
+        members = ev_connection.member.get_all(query="{id,joinDate}")[:2]
+
+        dates_before: list[datetime | None] = [m.joinDate for m in members]
+        dates_after = [d + timedelta(days=1) if d else date(1970, 1, 1) for d in dates_before]
+
+        update_data = [MemberUpdate(id=m.id, joinDate=d) for m, d in zip(members, dates_after)]
+
+        ev_connection.member.bulk_update(update_data)
+
+        updated_members = ev_connection.member.get_all(query="{id,joinDate}")[:2]
+
+        assert isinstance(updated_members, list)
+        assert len(updated_members) == 2
+        assert [m.joinDate for m in updated_members] == dates_after
+
+        # reset data
+        ev_connection.member.bulk_update(
+            [MemberUpdate(id=m.id, joinDate=d) for m, d in zip(members, dates_before)], exclude_none=False
+        )
+        reset_members = ev_connection.member.get_all(query="{id,joinDate}")[:2]
+        assert [m.joinDate for m in reset_members] == dates_before