feat: bump mill-scip to 0.3.0 to add support for Java

This change bumps the mill-scip version to 0.3.0 and adds a test showing
that this version now can also handle Java Modules.

Author: ckipp01

build.sbt

@@ -24,7 +24,7 @@ lazy val V =
     def testcontainers = "0.39.3"
     def requests = "0.6.5"
     def minimalMillVersion = "0.10.0"
-    def millScipVersion = "0.2.3"
+    def millScipVersion = "0.3.0"
   }
 
 inThisBuild(

docs/getting-started.md

@@ -243,7 +243,7 @@ free to subscribe to the tracking issues to receive updates on your build tool.
 | Ant        | ❌   | ❌    | ❌     | [sourcegraph/scip-java#305](https://github.com/sourcegraph/scip-java/issues/305) |
 | Bazel      | ✅   | ✅    | ❌     |                                                                                  |
 | Buck       | ❌   | ❌    | ❌     | [sourcegraph/scip-java#99](https://github.com/sourcegraph/scip-java/issues/99)   |
-| Mill       | ❌   | ✅    | ❌     | 
+| Mill       | ✅   | ✅    | ❌     | 
 
 **✅**: automatic indexing is fully supported. Please report a bug if the
 `scip-java index` command does not work on your codebase.
@@ -304,9 +304,10 @@ projects, with the following caveats:
 The `scip-java index` build should be able to automatically index most Mill 
 projects, with the following caveats:
 
-| Integration   | Supported | Recommendation             |
-| ------------- | --------- | -------------------------- |
-| Mill <v0.10.0 | ❌        | Upgrade to Mill >= v0.10.0 |
+| Integration   | Supported           | Recommendation                             |
+| ------------- | --------------------| -------------------------------------------|
+| Mill <v0.10.0 | ❌                  | Upgrade to Mill >= v0.10.0                 |
+| Mill <v0.10.6 | Only supports Scala | Upgrade to Mill >= v0.10.6 for Java support|
 
 
 ### Bazel

tests/buildTools/src/test/scala/tests/MillBuildToolSuite.scala

@@ -9,7 +9,7 @@ import scala.jdk.CollectionConverters._
 
 class MillBuildToolSuite extends BaseBuildToolSuite {
 
-  def setupMill() = {
+  def setupMill(millVersion: String) = {
     val mill = workingDirectory.resolve("mill")
     val resource = getClass().getResource("/mill")
     val in = Paths.get(resource.toURI)
@@ -24,7 +24,7 @@ class MillBuildToolSuite extends BaseBuildToolSuite {
         PosixFilePermission.OWNER_EXECUTE
       ).asJava
     )
-    List("./mill", "--version")
+    List("./mill", s"--mill-version", millVersion, "--version")
   }
 
   def scalaLibrary(scalaVersion: String) =
@@ -92,8 +92,30 @@ class MillBuildToolSuite extends BaseBuildToolSuite {
             |maven:org.scalameta:junit-interface:1.0.0-M6
             |maven:org.scalameta:munit_${scalaBinaryVersion(scalaVersion)}:1.0.0-M6
             |""".stripMargin,
-      initCommand = setupMill(),
+      initCommand = setupMill(millVersion),
       targetRoot = Some("out/io/kipp/mill/scip/Scip/generate.dest")
     )
   }
+
+  checkBuild(
+    "java-module",
+    s"""|/.mill-version
+        |0.10.7
+        |/build.sc
+        |import mill._, scalalib._
+        |object minimal extends JavaModule
+        |/minimal/src/ScipOutputFormat.java
+        |package minimal;
+        |public enum ScipOutputFormat {
+        |  GRAPH_NDJSON,
+        |  GRAPH_PROTOBUF,
+        |  TYPED_PROTOBUF,
+        |  TYPED_NDJSON,
+        |  UNKNOWN;
+        |}
+        |""".stripMargin,
+    expectedSemanticdbFiles = 1,
+    initCommand = setupMill("0.10.7"),
+    targetRoot = Some("out/io/kipp/mill/scip/Scip/generate.dest")
+  )
 }