feat: add transforms fixtures for codemod test (#1421)

.prettierignore

@@ -0,0 +1,2 @@
+# transforms testfixtures
+packages/codemods/src/transforms/testfixtures/**

knip.json

@@ -28,6 +28,9 @@
     },
     "packages/react-dom": {
       "ignoreDependencies": ["react-dom", "@types/react-dom"]
+    },
+    "packages/codemods": {
+      "ignore": ["**/testfixtures/**"]
     }
   }
 }

packages/codemods/eslint.config.mjs

@@ -1,3 +1,8 @@
 import { suspensiveTypeScriptConfig } from '@suspensive/eslint-config'
 
-export default [...suspensiveTypeScriptConfig]
+export default [
+  ...suspensiveTypeScriptConfig,
+  {
+    ignores: ['./src/transforms/testfixtures/**'],
+  },
+]

packages/codemods/src/transforms/testfixtures/tanstack-query-import/tanstack-query-import.input.jsx

@@ -0,0 +1,2 @@
+import { queryOptions } from "@suspensive/react-query";
+export { queryOptions }

packages/codemods/src/transforms/testfixtures/tanstack-query-import/tanstack-query-import.output.jsx

@@ -0,0 +1,2 @@
+import { queryOptions } from "@tanstack/react-query";
+export { queryOptions }

packages/codemods/src/transforms/tests/tanstack-query-import.test.ts

@@ -0,0 +1,8 @@
+// @ts-expect-error - type definitions not available
+import { defineInlineTest } from 'jscodeshift/dist/testUtils'
+import transform from '../tanstack-query-import'
+import { getTestfixtures } from '../utils/getTestfixtures'
+
+const { input, expectedOutput, testName } = getTestfixtures('tanstack-query-import', 'jsx')
+
+defineInlineTest(transform, null, input, expectedOutput, testName)

packages/codemods/src/transforms/utils/getTestfixtures.spec.ts

@@ -0,0 +1,60 @@
+import { readFileSync } from 'node:fs'
+import { join } from 'node:path'
+import type { Mock } from 'vitest'
+import { getTestfixtures } from './getTestfixtures'
+
+vi.mock('node:fs', () => ({
+  readFileSync: vi.fn(),
+}))
+
+const mockReadFileSync = readFileSync as Mock
+
+describe('getTestfixtures', () => {
+  const mockInput = 'mock input content'
+  const mockOutput = 'mock output content'
+  const transformName = 'sampleTransform'
+  const extension = 'js'
+  const FIXTURE_DIR = join(__dirname, '../testfixtures', transformName)
+  const inputPath = join(FIXTURE_DIR, `${transformName}.input.${extension}`)
+  const outputPath = join(FIXTURE_DIR, `${transformName}.output.${extension}`)
+
+  beforeEach(() => {
+    vi.clearAllMocks()
+  })
+
+  it('should correctly read input and output fixture files', () => {
+    mockReadFileSync.mockImplementation((filePath: string) => {
+      if (filePath === inputPath) return mockInput
+      if (filePath === outputPath) return mockOutput
+      return ''
+    })
+
+    const result = getTestfixtures(transformName, extension)
+
+    expect(result).toEqual({
+      input: mockInput,
+      expectedOutput: mockOutput,
+      testName: transformName,
+    })
+    expect(mockReadFileSync).toHaveBeenCalledWith(inputPath, 'utf8')
+    expect(mockReadFileSync).toHaveBeenCalledWith(outputPath, 'utf8')
+  })
+
+  it('should throw an error if input file is missing', () => {
+    mockReadFileSync.mockImplementation((filePath: string) => {
+      if (filePath === outputPath) return mockOutput
+      throw new Error('File not found')
+    })
+
+    expect(() => getTestfixtures(transformName, extension)).toThrow('File not found')
+  })
+
+  it('should throw an error if output file is missing', () => {
+    mockReadFileSync.mockImplementation((filePath: string) => {
+      if (filePath === inputPath) return mockInput
+      throw new Error('File not found')
+    })
+
+    expect(() => getTestfixtures(transformName, extension)).toThrow('File not found')
+  })
+})

packages/codemods/src/transforms/utils/getTestfixtures.ts

@@ -0,0 +1,17 @@
+import { readFileSync } from 'node:fs'
+import { join } from 'node:path'
+
+export function getTestfixtures(transformName: string, extension: 'js' | 'jsx' | 'ts' | 'tsx' = 'js') {
+  const FIXTURE_DIR = join(__dirname, '../testfixtures', transformName)
+  const inputPath = join(FIXTURE_DIR, `${transformName}.input.${extension}`)
+  const outputPath = join(FIXTURE_DIR, `${transformName}.output.${extension}`)
+
+  const input = readFileSync(inputPath, 'utf8').trim()
+  const expectedOutput = readFileSync(outputPath, 'utf8').trim()
+
+  return {
+    input,
+    expectedOutput,
+    testName: transformName,
+  }
+}