test: add eval ESM module tests

zeckson · BridgeAR · commit edb1a3c3c1d0 · 2019-06-17T21:12:36.000+02:00
PR-URL: #27956 Reviewed-By: Guy Bedford <guybedford@gmail.com> Reviewed-By: Jan Krems <jan.krems@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
diff --git a/test/parallel/test-cli-eval.js b/test/parallel/test-cli-eval.js
@@ -229,3 +229,48 @@ child.exec(`${nodejs} --use-strict -p process.execArgv`,
     assert.strictEqual(err, null);
   }));
 });
+
+// ESModule eval tests
+
+
+// Assert that "42\n" is written to stdout on module eval.
+const execOptions = '--experimental-modules --input-type module';
+child.exec(
+  `${nodejs} ${execOptions} --eval "console.log(42)"`,
+  common.mustCall((err, stdout) => {
+    assert.ifError(err);
+    assert.strictEqual(stdout, '42\n');
+  }));
+
+// Assert that "42\n" is written to stdout with print option.
+child.exec(
+  `${nodejs} ${execOptions} --print --eval "42"`,
+  common.mustCall((err, stdout) => {
+    assert.ifError(err);
+    assert.strictEqual(stdout, '42\n');
+  }));
+
+// Assert that error is written to stderr on invalid input.
+child.exec(
+  `${nodejs} ${execOptions} --eval "!!!!"`,
+  common.mustCall((err, stdout, stderr) => {
+    assert.ok(err);
+    assert.strictEqual(stdout, '');
+    assert.ok(stderr.indexOf('SyntaxError: Unexpected end of input') > 0);
+  }));
+
+// Assert that require is undefined in ESM support
+child.exec(
+  `${nodejs} ${execOptions} --eval "console.log(typeof require);"`,
+  common.mustCall((err, stdout) => {
+    assert.ifError(err);
+    assert.strictEqual(stdout, 'undefined\n');
+  }));
+
+// Assert that import.meta is defined in ESM
+child.exec(
+  `${nodejs} ${execOptions} --eval "console.log(typeof import.meta);"`,
+  common.mustCall((err, stdout) => {
+    assert.ifError(err);
+    assert.strictEqual(stdout, 'object\n');
+  }));
