test(messageView): 增加渲染和解析工具函数的单元测试覆盖

- 新增 renderMessageToStdout 函数的多场景测试，包括用户、助手、工具和系统消息的渲染行为
- 添加 getUpdatePlanPreviewLines 对 UpdatePlan 工具消息的计划内容提取测试
- 增加 parseToolPayload 函数对空内容、无效 JSON 和有效负载的解析测试
- 引入辅助函数 makeSessionMessage 以简化测试消息实例构造
- 确保各种边界条件和meta字段的渲染正确性验证

Author: hqwlkj

src/tests/messageView.test.ts

@@ -1,8 +1,15 @@
 import { test } from "node:test";
 import assert from "node:assert/strict";
 import { parseDiffPreview } from "../ui";
-import { buildThinkingSummary } from "../ui/compoments/MessageView/utils";
+import {
+  buildThinkingSummary,
+  renderMessageToStdout,
+  getUpdatePlanPreviewLines,
+  parseToolPayload,
+} from "../ui/compoments/MessageView/utils";
 import { RawMode } from "../ui/contexts";
+import type { SessionMessage } from "../session";
+import type { ToolSummary } from "../ui/compoments/MessageView/types";
 
 test("parseDiffPreview removes headers and classifies lines", () => {
   const lines = parseDiffPreview(
@@ -52,3 +59,172 @@ test("MessageView shows full reasoning content in Normal/Raw mode", () => {
     "hidden chain of thought"
   );
 });
+
+// --- renderMessageToStdout tests ---
+
+function makeSessionMessage(overrides: Partial<SessionMessage> & Pick<SessionMessage, "role">): SessionMessage {
+  const now = new Date().toISOString();
+  return {
+    id: `test-${Math.random().toString(36).slice(2)}`,
+    sessionId: "test-session",
+    visible: true,
+    compacted: false,
+    createTime: now,
+    updateTime: now,
+    contentParams: null,
+    messageParams: null,
+    ...overrides,
+  };
+}
+
+test("renderMessageToStdout returns empty for invisible messages", () => {
+  const msg = makeSessionMessage({ role: "user", content: "hello", visible: false });
+  assert.equal(renderMessageToStdout(msg, RawMode.Raw), "");
+});
+
+test("renderMessageToStdout renders user messages with > prefix", () => {
+  const msg = makeSessionMessage({ role: "user", content: "fix the bug" });
+  const output = renderMessageToStdout(msg, RawMode.Raw);
+  assert.ok(output.includes("> fix the bug"));
+});
+
+test("renderMessageToStdout shows (no content) for empty user messages", () => {
+  const msg = makeSessionMessage({ role: "user", content: "" });
+  const output = renderMessageToStdout(msg, RawMode.Raw);
+  assert.ok(output.includes("(no content)"));
+});
+
+test("renderMessageToStdout renders assistant non-thinking messages with ✦", () => {
+  const msg = makeSessionMessage({ role: "assistant", content: "Here is the fix" });
+  const output = renderMessageToStdout(msg, RawMode.Raw);
+  assert.ok(output.includes("✦"));
+  assert.ok(output.includes("Here is the fix"));
+});
+
+test("renderMessageToStdout renders assistant thinking messages with ✧ Thinking", () => {
+  const msg = makeSessionMessage({
+    role: "assistant",
+    content: "Plan:\nAnalyze the code",
+    meta: { asThinking: true },
+  });
+  const output = renderMessageToStdout(msg, RawMode.Lite);
+  assert.ok(output.includes("✧"));
+  assert.ok(output.includes("Thinking"));
+  assert.ok(output.includes("Plan: Analyze the code"));
+});
+
+test("renderMessageToStdout renders tool messages with ✧ and tool name", () => {
+  const payload = JSON.stringify({ name: "read", ok: true });
+  const msg = makeSessionMessage({ role: "tool", content: payload });
+  const output = renderMessageToStdout(msg, RawMode.Raw);
+  assert.ok(output.includes("✧"));
+  assert.ok(output.includes("Read"));
+});
+
+test("renderMessageToStdout renders UpdatePlan tool messages with Plan preview", () => {
+  const payload = JSON.stringify({
+    name: "UpdatePlan",
+    ok: true,
+    metadata: { plan: "Step 1: Analyze\nStep 2: Implement\nStep 3: Test" },
+  });
+  const msg = makeSessionMessage({ role: "tool", content: payload });
+  const output = renderMessageToStdout(msg, RawMode.Raw);
+  assert.ok(output.includes("UpdatePlan"));
+  assert.ok(output.includes("└ Plan"));
+  assert.ok(output.includes("Step 1: Analyze"));
+  assert.ok(output.includes("Step 2: Implement"));
+});
+
+test("renderMessageToStdout renders system model change messages", () => {
+  const msg = makeSessionMessage({
+    role: "system",
+    content: "Switched to deepseek-v4-pro",
+    meta: { isModelChange: true },
+  });
+  const output = renderMessageToStdout(msg, RawMode.Raw);
+  assert.ok(output.includes("> Switched to deepseek-v4-pro"));
+});
+
+test("renderMessageToStdout renders system skill load messages", () => {
+  const msg = makeSessionMessage({
+    role: "system",
+    content: "",
+    meta: { skill: { name: "code-review" } },
+  });
+  const output = renderMessageToStdout(msg, RawMode.Raw);
+  assert.ok(output.includes("⚡ Loaded skill: code-review"));
+});
+
+test("renderMessageToStdout renders system summary messages", () => {
+  const msg = makeSessionMessage({
+    role: "system",
+    content: "",
+    meta: { isSummary: true },
+  });
+  const output = renderMessageToStdout(msg, RawMode.Raw);
+  assert.ok(output.includes("(conversation summary inserted)"));
+});
+
+test("renderMessageToStdout returns empty for unknown system messages", () => {
+  const msg = makeSessionMessage({ role: "system", content: "" });
+  assert.equal(renderMessageToStdout(msg, RawMode.Raw), "");
+});
+
+// --- getUpdatePlanPreviewLines tests ---
+
+test("getUpdatePlanPreviewLines returns empty for failed tool", () => {
+  const summary: ToolSummary = { name: "UpdatePlan", params: "", ok: false, metadata: { plan: "Step 1" } };
+  assert.deepEqual(getUpdatePlanPreviewLines(summary), []);
+});
+
+test("getUpdatePlanPreviewLines returns empty for non-UpdatePlan tool", () => {
+  const summary: ToolSummary = { name: "edit", params: "", ok: true, metadata: { plan: "Step 1" } };
+  assert.deepEqual(getUpdatePlanPreviewLines(summary), []);
+});
+
+test("getUpdatePlanPreviewLines returns empty for missing plan metadata", () => {
+  const summary: ToolSummary = { name: "UpdatePlan", params: "", ok: true, metadata: null };
+  assert.deepEqual(getUpdatePlanPreviewLines(summary), []);
+});
+
+test("getUpdatePlanPreviewLines returns empty for empty plan string", () => {
+  const summary: ToolSummary = { name: "UpdatePlan", params: "", ok: true, metadata: { plan: "" } };
+  assert.deepEqual(getUpdatePlanPreviewLines(summary), []);
+});
+
+test("getUpdatePlanPreviewLines extracts plan lines and filters empty rows", () => {
+  const summary: ToolSummary = {
+    name: "UpdatePlan",
+    params: "",
+    ok: true,
+    metadata: { plan: "Step 1: Analyze\n\nStep 2: Implement\n  \nStep 3: Test" },
+  };
+  assert.deepEqual(getUpdatePlanPreviewLines(summary), ["Step 1: Analyze", "Step 2: Implement", "Step 3: Test"]);
+});
+
+// --- parseToolPayload tests ---
+
+test("parseToolPayload returns defaults for null content", () => {
+  const result = parseToolPayload(null);
+  assert.deepEqual(result, { name: null, ok: true, metadata: null });
+});
+
+test("parseToolPayload returns defaults for invalid JSON", () => {
+  const result = parseToolPayload("not valid json");
+  assert.deepEqual(result, { name: null, ok: true, metadata: null });
+});
+
+test("parseToolPayload parses valid JSON with name/ok/metadata", () => {
+  const result = parseToolPayload(JSON.stringify({ name: "read", ok: true, metadata: { file: "src/index.ts" } }));
+  assert.deepEqual(result, { name: "read", ok: true, metadata: { file: "src/index.ts" } });
+});
+
+test("parseToolPayload respects ok: false", () => {
+  const result = parseToolPayload(JSON.stringify({ name: "bash", ok: false, metadata: null }));
+  assert.deepEqual(result, { name: "bash", ok: false, metadata: null });
+});
+
+test("parseToolPayload trims whitespace from name", () => {
+  const result = parseToolPayload(JSON.stringify({ name: "  read  ", ok: true }));
+  assert.equal(result.name, "read");
+});