test(module-runner): add TLA circular import case (#23299)

Author: sapphi-red

packages/vite/src/node/ssr/runtime/__tests__/fixtures/tla-circular/a.js

@@ -0,0 +1,6 @@
+import { b } from './b.js'
+
+await Promise.resolve()
+
+export const a = 'a'
+export const getB = () => b

packages/vite/src/node/ssr/runtime/__tests__/fixtures/tla-circular/b.js

@@ -0,0 +1,6 @@
+import { a } from './a.js'
+
+await Promise.resolve()
+
+export const b = 'b'
+export const getA = () => a

packages/vite/src/node/ssr/runtime/__tests__/fixtures/tla-circular/index.js

@@ -0,0 +1,4 @@
+import { a, getB } from './a.js'
+import { b, getA } from './b.js'
+
+export { a, b, getA, getB }

packages/vite/src/node/ssr/runtime/__tests__/server-runtime.spec.ts

@@ -272,6 +272,17 @@ describe('module runner initialization', async () => {
     expect(action).toBeDefined()
   })
 
+  it('resolves circular imports between modules with top-level await', async ({
+    runner,
+  }) => {
+    const mod = await runner.import('/fixtures/tla-circular/index.js')
+
+    expect(mod.a).toBe('a')
+    expect(mod.b).toBe('b')
+    expect(mod.getA()).toBe('a')
+    expect(mod.getB()).toBe('b')
+  })
+
   it('this of the exported function should be undefined', async ({
     runner,
   }) => {