test: add repl test for promise eval

Author: islandryu

test/parallel/test-repl-eval-promises.js

@@ -0,0 +1,62 @@
+'use strict';
+
+const common = require('../common');
+const repl = require('repl');
+const ArrayStream = require('../common/arraystream');
+const assert = require('assert');
+
+const tests = [
+  {
+    send: 'Promise.reject()',
+    expect: /Promise \{[\s\S]*?Uncaught undefined\n?$/
+  },
+  {
+    send: 'let p = Promise.reject()',
+    expect: /undefined\nUncaught undefined\n?$/
+  },
+  {
+    send: `Promise.resolve()`,
+    expect: /Promise \{[\s\S]*?}\n?$/
+  },
+  {
+    send: `Promise.resolve().then(() => {})`,
+    expect: /Promise \{[\s\S]*?}\n?$/
+  },
+  {
+    send: `async function f() { throw new Error('test'); };f();`,
+    expect: /Promise \{[\s\S]*?<rejected> Error: test[\s\S]*?Uncaught Error: test[\s\S]*?\n?$/
+  },
+  {
+    send: `async function f() {};f();`,
+    expect: /Promise \{[\s\S]*?}\n?$/
+  },
+];
+
+(async function() {
+  await runReplTests(tests);
+})().then(common.mustCall());
+
+async function runReplTests(tests) {
+  for (const { send, expect } of tests) {
+    const input = new ArrayStream();
+    const output = new ArrayStream();
+    let outputText = '';
+    function write(data) {
+      outputText += data;
+    }
+    output.write = write;
+    const replServer = repl.start({
+      prompt: '',
+      input,
+      output: output,
+    });
+    input.emit('data', `${send}\n`);
+    await new Promise((resolve) => {
+      setTimeout(() => {
+        assert.match(outputText, expect);
+        replServer.close();
+        resolve();
+      }, 10);
+    });
+  }
+}