[bun:test] Auto-import jest globals in test files

1 files changed, 24 insertions, 0 deletions

diff --git a/test/bun.js/test-auto-import-jest-globals.test.js b/test/bun.js/test-auto-import-jest-globals.test.js
new file mode 100644
index 000000000..5baeae43e
--- /dev/null
+++ b/test/bun.js/test-auto-import-jest-globals.test.js
@@ -0,0 +1,24 @@
+test("Jest auto imports", () => {
+  expect(true).toBe(true);
+  expect(typeof describe).toBe("function");
+  expect(typeof it).toBe("function");
+  expect(typeof test).toBe("function");
+  expect(typeof expect).toBe("function");
+  expect(typeof beforeAll).toBe("function");
+  expect(typeof beforeEach).toBe("function");
+  expect(typeof afterAll).toBe("function");
+  expect(typeof afterEach).toBe("function");
+});
+
+test("Jest's globals aren't available in every file", async () => {
+  const jestGlobals = await import("./jest-doesnt-auto-import.js");
+
+  expect(typeof jestGlobals.describe).toBe("undefined");
+  expect(typeof jestGlobals.it).toBe("undefined");
+  expect(typeof jestGlobals.test).toBe("undefined");
+  expect(typeof jestGlobals.expect).toBe("undefined");
+  expect(typeof jestGlobals.beforeAll).toBe("undefined");
+  expect(typeof jestGlobals.beforeEach).toBe("undefined");
+  expect(typeof jestGlobals.afterAll).toBe("undefined");
+  expect(typeof jestGlobals.afterEach).toBe("undefined");
+});