🐛 fix(vscode): 跳到定义时对准名字并闪

vscode/src/codeReader/editor/definitions.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, it, vi } from 'vitest'
+import { definitionOffset } from './definitions'
+
+vi.mock('vscode', () => ({
+  commands: { executeCommand: vi.fn() },
+  EventEmitter: class EventEmitter { event = vi.fn(); fire = vi.fn() },
+  Range: class Range {},
+  Uri: { parse: vi.fn() },
+  window: { createOutputChannel: vi.fn(() => ({ appendLine: vi.fn(), info: vi.fn(), warn: vi.fn(), error: vi.fn() })) },
+  workspace: { openTextDocument: vi.fn(), asRelativePath: vi.fn() },
+}))
+
+const SOURCE = [
+  'export class DeployActionError extends Error {',
+  '  status = 1',
+  '}',
+  'export const fetchAppDeployments = async () => 1',
+].join('\n')
+
+describe('定义范围的起点不在名字上时，用范围里那个名字', () => {
+  const nameAt = SOURCE.indexOf('fetchAppDeployments')
+  const whole = { start: 0, end: SOURCE.length }
+
+  it('没有选区：在大范围里找到和点击的名字一致的那一处，不用大范围的起点', () => {
+    expect(definitionOffset(SOURCE, whole, undefined, 'fetchAppDeployments')).toBe(nameAt)
+  })
+
+  it('选区起点已经在名字上：用选区，不再往范围更前面找', () => {
+    const earlier = SOURCE.indexOf('DeployActionError')
+    expect(definitionOffset(SOURCE, whole, { start: nameAt, end: nameAt + 'fetchAppDeployments'.length }, 'fetchAppDeployments')).toBe(nameAt)
+    expect(definitionOffset(SOURCE, whole, { start: earlier, end: earlier + 'DeployActionError'.length }, 'DeployActionError')).toBe(earlier)
+  })
+
+  it('选区是一整段、起点不在名字上：仍在这段里找名字', () => {
+    expect(definitionOffset(SOURCE, whole, whole, 'fetchAppDeployments')).toBe(nameAt)
+  })
+
+  it('只是更长名字的前缀不算', () => {
+    const text = 'const fetchAppDeploymentsExtra = fetchAppDeployments'
+    expect(definitionOffset(text, { start: 0, end: text.length }, undefined, 'fetchAppDeployments')).toBe(text.lastIndexOf('fetchAppDeployments'))
+  })
+})