fixup! test: add test for Project

Author: mizdra

packages/codegen/src/project.test.ts

@@ -1,4 +1,4 @@
-import { access, chmod, writeFile } from 'node:fs/promises';
+import { access, chmod, rm, writeFile } from 'node:fs/promises';
 import { TsConfigFileNotFoundError } from '@css-modules-kit/core';
 import dedent from 'dedent';
 import { describe, expect, test } from 'vitest';
@@ -48,7 +48,7 @@ test('isWildcardMatchedFile', async () => {
 });
 
 describe('addFile', () => {
-  test('The diagnostics of the added file are reported and .d.ts file is emitted', async () => {
+  test('The diagnostics of the added file are reported, and .d.ts file is emitted', async () => {
     const iff = await createIFF({
       'tsconfig.json': '{}',
       'src': {},
@@ -85,7 +85,7 @@ describe('addFile', () => {
     await project.emitDtsFiles();
     await expect(access(iff.join('generated/src/a.module.css.d.ts'))).resolves.not.toThrow();
   });
-  test('Adding a file may resolve diagnostics in files that import it directly or indirectly', async () => {
+  test('changes diagnostics in files that import it directly or indirectly', async () => {
     // This test case suggests the following facts:
     // - The check stage cache for files that directly import the added file should be invalidated.
     // - The check stage cache for files that indirectly import the added file should also be invalidated.
@@ -123,7 +123,7 @@ describe('addFile', () => {
     project.addFile(iff.join('src/a.module.css'));
     expect(formatDiagnostics(project.getDiagnostics(), iff.rootDir)).toMatchInlineSnapshot(`[]`);
   });
-  test('Adding a file may change the resolution results of import specifiers in other files', async () => {
+  test('changes the resolution results of import specifiers in other files', async () => {
     // This test case suggests the following facts:
     // - The check stage cache for files that import other files should be invalidated.
     // - Only independent files that do not import any other files can keep the check stage cache.
@@ -163,7 +163,7 @@ describe('addFile', () => {
 });
 
 describe('updateFile', () => {
-  test('The new diagnostics of the changed file are reported and new .d.ts file is emitted', async () => {
+  test('The new diagnostics of the changed file are reported, and new .d.ts file is emitted', async () => {
     const iff = await createIFF({
       'tsconfig.json': '{}',
       'src/a.module.css': '',
@@ -220,8 +220,9 @@ describe('updateFile', () => {
       ]
     `);
   });
-  test('Changing a file may resolve diagnostics in files that import it directly or indirectly', async () => {
+  test('changes diagnostics in files that import it directly or indirectly', async () => {
     // This test case suggests the following facts:
+    // - The resolution cache should be invalidated.
     // - The check stage cache for files that directly import the changed file should be invalidated.
     // - The check stage cache for files that indirectly import the changed file should also be invalidated.
     const iff = await createIFF({
@@ -264,7 +265,122 @@ describe('updateFile', () => {
   });
 });
 
-describe.todo('deleteFile', () => {});
+describe('removeFile', () => {
+  test('The diagnostics of the removed file are not reported, and .d.ts file is not emitted', async () => {
+    const iff = await createIFF({
+      'tsconfig.json': '{}',
+      'src/a.module.css': '.a_1 {',
+    });
+    const project = createProject({ project: iff.rootDir });
+
+    // Even if the file is deleted, diagnostics will not change until notified by `removeFile`.
+    await rm(iff.join('src/a.module.css'));
+    expect(formatDiagnostics(project.getDiagnostics(), iff.rootDir)).toMatchInlineSnapshot(`
+      [
+        {
+          "category": "error",
+          "fileName": "<rootDir>/src/a.module.css",
+          "length": 1,
+          "start": {
+            "column": 1,
+            "line": 1,
+          },
+          "text": "Unclosed block",
+        },
+      ]
+    `);
+
+    project.removeFile(iff.join('src/a.module.css'));
+    expect(formatDiagnostics(project.getDiagnostics(), iff.rootDir)).toMatchInlineSnapshot(`
+      [
+        {
+          "category": "error",
+          "text": "The file specified in tsconfig.json not found.",
+        },
+      ]
+    `);
+
+    await project.emitDtsFiles();
+    await expect(access(iff.join('generated/src/a.module.css.d.ts'))).rejects.toThrow();
+  });
+  test('changes diagnostics in files that import it directly or indirectly', async () => {
+    // This test case suggests the following facts:
+    // - The check stage cache for files that directly import the changed file should be invalidated.
+    // - The check stage cache for files that indirectly import the changed file should also be invalidated.
+    const iff = await createIFF({
+      'tsconfig.json': '{}',
+      'src/a.module.css': '@value a_1: red;',
+      'src/b.module.css': '@import "./a.module.css";', // directly
+      'src/c.module.css': '@value a_1 from "./b.module.css";', // indirectly
+    });
+    const project = createProject({ project: iff.rootDir });
+    expect(formatDiagnostics(project.getDiagnostics(), iff.rootDir)).toMatchInlineSnapshot(`[]`);
+    await rm(iff.join('src/a.module.css'));
+    project.removeFile(iff.join('src/a.module.css'));
+    expect(formatDiagnostics(project.getDiagnostics(), iff.rootDir)).toMatchInlineSnapshot(`
+      [
+        {
+          "category": "error",
+          "fileName": "<rootDir>/src/b.module.css",
+          "length": 14,
+          "start": {
+            "column": 10,
+            "line": 1,
+          },
+          "text": "Cannot import module './a.module.css'",
+        },
+        {
+          "category": "error",
+          "fileName": "<rootDir>/src/c.module.css",
+          "length": 3,
+          "start": {
+            "column": 8,
+            "line": 1,
+          },
+          "text": "Module './b.module.css' has no exported token 'a_1'.",
+        },
+      ]
+    `);
+  });
+  test('changes the resolution results of import specifiers in other files', async () => {
+    // This test case suggests the following facts:
+    // - The resolution cache should be invalidated.
+    // - The check stage cache for files that import the removed file should be invalidated.
+    const iff = await createIFF({
+      'tsconfig.json': dedent`
+        {
+          "compilerOptions": {
+            "paths": {
+              "@/a.module.css": ["src/a-1.module.css", "src/a-2.module.css"]
+            }
+          }
+        }
+      `,
+      'src/a-1.module.css': '@value a_1: red;',
+      'src/a-2.module.css': '@value a_2: red;',
+      'src/b.module.css': '@import "@/a.module.css";',
+      'src/c.module.css': '@value a_2 from "./b.module.css";',
+    });
+    const project = createProject({ project: iff.rootDir });
+    expect(formatDiagnostics(project.getDiagnostics(), iff.rootDir)).toMatchInlineSnapshot(`
+      [
+        {
+          "category": "error",
+          "fileName": "<rootDir>/src/c.module.css",
+          "length": 3,
+          "start": {
+            "column": 8,
+            "line": 1,
+          },
+          "text": "Module './b.module.css' has no exported token 'a_2'.",
+        },
+      ]
+    `);
+    await rm(iff.join('src/a-1.module.css'));
+    project.removeFile(iff.join('src/a-1.module.css'));
+    expect(formatDiagnostics(project.getDiagnostics(), iff.rootDir)).toMatchInlineSnapshot(`[]`);
+  });
+});
 
 describe('getDiagnostics', () => {
   test('returns empty array when no diagnostics', async () => {