test: add test for checking partial specified dual entries (#594)

Co-authored-by: Jiachi Liu <[email protected]>

test/integration/duplicate-entries-partial-specified/index.test.ts

@@ -0,0 +1,17 @@
+import { createIntegrationTest, getFileNamesFromDirectory } from '../utils'
+
+describe('integration duplicate-entries-partial-specified', () => {
+  it('should not generate js types paths if not specified', async () => {
+    await createIntegrationTest(
+      {
+        directory: __dirname,
+      },
+      async ({ distDir }) => {
+        expect(await getFileNamesFromDirectory(distDir)).toEqual([
+          'a.js',
+          'a.workerd.js',
+        ])
+      },
+    )
+  })
+})

test/integration/duplicate-entries-partial-specified/package.json

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+{
+  "name": "undefined-types-paths",
+  "type": "module",
+  "exports": {
+    "./a": {
+      "workerd": "./dist/a.workerd.js",
+      "import": "./dist/a.js"
+    }
+  }
+}

test/integration/duplicate-entries-partial-specified/src/a.ts

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+export { internal } from './a/shared'

test/integration/duplicate-entries-partial-specified/src/a.workerd.ts

@@ -0,0 +1 @@
+export { internal } from './a/shared'

test/integration/duplicate-entries-partial-specified/src/a/shared.ts

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+export const internal = 'a'