Move Node tests on Windows to Travis (#1063)

* Move Node tests on Windows to Travis

Appveyor is flaky and can't be restarted by all team members, so moving
everything to Travis is preferable if we can get it to work.

* Actually use latest stable Node

This should also workaround the issue with lts/* not working on
Windows.

* Use npm.cmd instead of raw npm on Windows

* Use p.prettyUri() for Node API tests

Co-authored-by: Natalie Weizenbaum <nweiz@google.com>

.travis.yml

@@ -73,14 +73,10 @@ jobs:
   # The versions should be kept up-to-date with the latest LTS Node releases.
   # They next need to be rotated April 2021. See
   # https://github.com/nodejs/Release.
-  #
-  # TODO(nweiz): Run Node tests on Windows when [this issue][] is fixed.
-  #
-  # [this issue]: https://travis-ci.community/t/windows-instances-hanging-before-install/250/28.
   - &node-tests
     name: Node tests | Dart stable | Node stable
     language: node_js
-    node_js: lts/*
+    node_js: node
     install: pub run grinder before-test
     script: tool/travis/task/node_tests.sh
   - <<: *node-tests
@@ -89,6 +85,8 @@ jobs:
   - <<: *node-tests
     name: Node tests | Dart stable | Node Erbium
     node_js: lts/erbium
+  - <<: *node-tests
+    os: windows
   - <<: *node-tests
     os: osx
   - <<: *node-tests

test/node_api_test.dart

@@ -18,6 +18,7 @@ import 'hybrid.dart';
 import 'node_api/api.dart';
 import 'node_api/intercept_stdout.dart';
 import 'node_api/utils.dart';
+import 'utils.dart';
 
 String sassPath;
 
@@ -294,7 +295,7 @@ a {
                 "1 │ x {y: }\n"
                 "  │       ^\n"
                 "  ╵\n"
-                "  $sassPath 1:7  root stylesheet"));
+                "  ${prettyPath(sassPath)} 1:7  root stylesheet"));
       });
     });
 
@@ -369,7 +370,7 @@ a {
                   "1 │ a {b: }\n"
                   "  │       ^\n"
                   "  ╵\n"
-                  "  $sassPath 1:7  root stylesheet"));
+                  "  ${prettyPath(sassPath)} 1:7  root stylesheet"));
         });
 
         test("sets the line, column, and filename", () {
@@ -420,7 +421,7 @@ a {
                   '1 │ a {b: 1 % a}\n'
                   '  │       ^^^^^\n'
                   '  ╵\n'
-                  '  $sassPath 1:7  root stylesheet'));
+                  '  ${prettyPath(sassPath)} 1:7  root stylesheet'));
         });
 
         test("sets the line, column, and filename", () {
@@ -494,7 +495,7 @@ a {
               "1 │ a {b: }\n"
               "  │       ^\n"
               "  ╵\n"
-              "  $sassPath 1:7  root stylesheet"));
+              "  ${prettyPath(sassPath)} 1:7  root stylesheet"));
     });
   });
 }

test/utils.dart

@@ -5,6 +5,7 @@
 import 'dart:async';
 import 'dart:convert';
 
+import 'package:path/path.dart' as p;
 import 'package:test/test.dart';
 
 import 'package:sass/src/io.dart';
@@ -31,3 +32,6 @@ Map<String, Object> embeddedSourceMap(String css) {
   expect(data.mimeType, equals("application/json"));
   return jsonDecode(data.contentAsString()) as Map<String, Object>;
 }
+
+// Like `p.prettyUri()`, but for a non-URL path.
+String prettyPath(String path) => p.prettyUri(p.toUri(path));

tool/grind.dart

@@ -72,7 +72,8 @@ void format() {
 }
 
 @Task('Installs dependencies from npm.')
-void npmInstall() => run("npm", arguments: ["install"]);
+void npmInstall() =>
+    run(Platform.isWindows ? "npm.cmd" : "npm", arguments: ["install"]);
 
 @Task('Runs the tasks that are required for running tests.')
 @Depends(format, synchronize, "pkg-npm-dev", npmInstall, "pkg-standalone-dev")