feat: support testing on bun (#18)

Run node tests with bun using env var `NODE_EXEC=bun`

---------

Co-authored-by: Russell Dempsey <1173416+SgtPooki@users.noreply.github.com>

bin/test-node-example.js

@@ -5,7 +5,7 @@ import { execa } from 'execa'
 
 for (const file of process.argv.slice(2)) {
   // run test
-  await execa('node', [file], {
+  await execa(process.env.NODE_EXEC ?? 'node', [file], {
     stdio: 'inherit'
   })
 }

package.json

@@ -157,9 +157,9 @@
   "scripts": {
     "clean": "aegir clean",
     "lint": "aegir lint",
-    "dep-check": "aegir dep-check",
+    "dep-check": "aegir dep-check -i bun",
     "build": "aegir build --bundle false",
-    "test:node": "aegir test -t node -f ./dist/test/node.spec.js",
+    "test:node": "aegir test -t node -f ./dist/test/node.spec.js -f ./dist/test/bun.spec.js",
     "test:chrome": "aegir test -t node -f ./dist/test/browser.spec.js",
     "release": "aegir release",
     "docs": "aegir docs"
@@ -176,6 +176,7 @@
     "uint8arrays": "^5.0.1"
   },
   "devDependencies": {
-    "aegir": "^42.2.3"
+    "aegir": "^42.2.3",
+    "bun": "^1.1.3"
   }
 }

src/node/match-output.ts

@@ -23,7 +23,8 @@ export async function matchOutput (matcher: RegExp, command: string, args: strin
   const proc = execaUtil(command, args, { ...opts, all: true }, (exec) => {
     exec.all?.on('data', (data) => {
       process.stdout.write(data)
-      output += uint8ArrayToString(data)
+
+      output += typeof data === 'string' ? data : uint8ArrayToString(data)
 
       const matches = matcher.exec(output)
 

src/node/wait-for-output.ts

@@ -14,7 +14,7 @@ export async function waitForOutput (expectedOutput: string, command: string, ar
   const proc = execaUtil(command, args, { ...opts, all: true }, (exec) => {
     exec.all?.on('data', (data) => {
       process.stdout.write(data)
-      output += uint8ArrayToString(data)
+      output += typeof data === 'string' ? data : uint8ArrayToString(data)
 
       if (output.includes(expectedOutput)) {
         foundExpectedOutput = true

test/bun.spec.ts

@@ -0,0 +1,41 @@
+import { execa } from 'execa'
+
+describe('bun', function () {
+  // slow CI is slow
+  this.timeout(540000)
+  this.slow(60000)
+
+  it('should match output', async () => {
+    await execa('./bin/test-node-example.js', [
+      './test/fixtures/node/match-output.spec.js'
+    ], {
+      stdio: 'inherit',
+      env: {
+        NODE_EXEC: 'bun'
+      }
+    })
+  })
+
+  it('should wait for output', async () => {
+    await execa('./bin/test-node-example.js', [
+      './test/fixtures/node/wait-for-output.spec.js'
+    ], {
+      stdio: 'inherit',
+      env: {
+        NODE_EXEC: 'bun'
+      }
+    })
+  })
+
+  it('should test multiple files', async () => {
+    await execa('./bin/test-node-example.js', [
+      './test/fixtures/node/wait-for-output.spec.js',
+      './test/fixtures/node/match-output.spec.js'
+    ], {
+      stdio: 'inherit',
+      env: {
+        NODE_EXEC: 'bun'
+      }
+    })
+  })
+})