dsh 0.2.0-rc.2: in-container update (experimental channel), path-agnostic compose, upstream patches adapted to 0.1.x/0.2.x

upstream/container/control-plane/services/gateway/test/browser-loopback-patch.test.mjs

@@ -0,0 +1,40 @@
+import assert from 'node:assert/strict'
+import { mkdtemp, readFile, rm, writeFile } from 'node:fs/promises'
+import { tmpdir } from 'node:os'
+import { join } from 'node:path'
+import test from 'node:test'
+import { patchBrowserLoopback } from '../../../../environment/resources/patches/browser-loopback.mjs'
+
+const BEFORE = 'isLoopback: pageLocation === void 0 || isLoopbackHostname(pageLocation.hostname),'
+const BEFORE_WITH_TRANSPORT = 'isLoopback: transport?.ownsHost === true || pageLocation === void 0 || isLoopbackHostname(pageLocation.hostname),'
+
+test('browser loopback patch changes exactly one connection classification', async () => {
+  const directory = await mkdtemp(join(tmpdir(), 'dsh-browser-loopback-patch-'))
+  const target = join(directory, 'client.js')
+  try {
+    await writeFile(target, `before;${BEFORE}after;`)
+    patchBrowserLoopback(target)
+    assert.equal(await readFile(target, 'utf8'), 'before;isLoopback: true,after;')
+    assert.throws(() => patchBrowserLoopback(target), /found 0/)
+
+    await writeFile(target, `${BEFORE}${BEFORE}`)
+    assert.throws(() => patchBrowserLoopback(target), /found 2/)
+  } finally {
+    await rm(directory, { recursive: true })
+  }
+})
+
+test('browser loopback patch accepts the transport-owned Host classification', async () => {
+  const directory = await mkdtemp(join(tmpdir(), 'dsh-browser-loopback-patch-'))
+  const target = join(directory, 'client.js')
+  try {
+    await writeFile(target, `before;${BEFORE_WITH_TRANSPORT}after;`)
+    patchBrowserLoopback(target)
+    assert.equal(await readFile(target, 'utf8'), 'before;isLoopback: true,after;')
+
+    await writeFile(target, `${BEFORE}${BEFORE_WITH_TRANSPORT}`)
+    assert.throws(() => patchBrowserLoopback(target), /found 2/)
+  } finally {
+    await rm(directory, { recursive: true })
+  }
+})