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test: make server-url assertions immune to ephemeral-port collisions
Vladimir Sheremet
(Jul 27, 2026, 5:29 PM +0200)
01d36892
d80e9591
+17
-7
+2
-2
test/browser/specs/server-url.test.ts
+2
-2
test/browser/specs/server-url.test.ts
···
13
13
const url = ctx?.projects[0].vite.resolvedUrls?.local[0]
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expect(stderr).toBe('')
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15
expect.assert(url)
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-
expect(new URL(url).port).toBe('51133')
16
+
expect(new URL(url).port).toBe('31133')
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})
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test('server-url https', async () => {
···
25
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expect(stderr).toBe('')
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const url = ctx?.projects[0].vite.resolvedUrls?.local[0]
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expect.assert(url)
28
-
expect(new URL(url).port).toBe('51122')
28
+
expect(new URL(url).port).toBe('31122')
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expect(stdout).toReportSummaryTestFiles({ passed: instances.length })
30
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})
+11
-4
test/e2e/test/server-url.test.ts
+11
-4
test/e2e/test/server-url.test.ts
···
3
3
4
4
import { runInlineTests } from '../../test-utils'
5
5
6
+
// `api: true` must resolve to the default port, but which port Vite actually
7
+
// binds is not asserted: 51204 sits inside the OS ephemeral port range, and
8
+
// when an unrelated outbound socket happens to hold it, Vite silently binds
9
+
// port+1 (`strictPort` is off and the "Port is in use" notice is info-level,
10
+
// below the logger's `warn` level)
6
11
it('api server-url http', async () => {
7
-
const { stdout, stderr } = await runInlineTests(
12
+
const { stdout, stderr, ctx } = await runInlineTests(
8
13
{ 'basic.test.js': `test("basic")` },
9
14
{
10
15
api: true,
···
12
17
},
13
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)
14
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expect(stderr).toBe('')
15
-
expect(stdout).toContain('API started at http://localhost:51204/')
20
+
expect(ctx!.config.api.port).toBe(51204)
21
+
expect(stdout).toMatch(/API started at http:\/\/localhost:\d+\//)
16
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expect(stdout).toContain('Test Files 1 skipped')
17
23
})
18
24
19
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it('api server-url https', async () => {
20
-
const { stdout, stderr } = await runInlineTests(
26
+
const { stdout, stderr, ctx } = await runInlineTests(
21
27
{ 'basic.test.js': `test("basic")` },
22
28
{
23
29
api: true,
···
28
34
},
29
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)
30
36
expect(stderr).toBe('')
31
-
expect(stdout).toContain('API started at https://localhost:51204/')
37
+
expect(ctx!.config.api.port).toBe(51204)
38
+
expect(stdout).toMatch(/API started at https:\/\/localhost:\d+\//)
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expect(stdout).toContain('Test Files 1 skipped')
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})
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41
+4
-1
test/browser/fixtures/server-url/vitest.config.ts
+4
-1
test/browser/fixtures/server-url/vitest.config.ts
···
23
23
!!process.env.TEST_HTTPS && basicSsl(),
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],
25
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test: {
26
-
api: process.env.TEST_HTTPS ? 51122 : 51133,
26
+
// below the OS ephemeral port range (32768+ on Linux): a kernel-assigned
27
+
// outbound socket holding the fixed port would make Vite silently bind
28
+
// port+1 and fail the exact-port assertions
29
+
api: process.env.TEST_HTTPS ? 31122 : 31133,
27
30
browser: {
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enabled: true,
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provider: configuredProvider,