Don't implicitly run "pub get".

test/must_pub_get_test.dart

+// Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+import 'dart:async';
+import 'dart:convert';
+
+import 'package:path/path.dart' as p;
+import 'package:pub/src/exit_codes.dart' as exit_codes;
+import 'package:pub/src/io.dart';
+import 'package:scheduled_test/scheduled_test.dart';
+
+import 'descriptor.dart' as d;
+import 'test_pub.dart';
+
+main() {
+  group("requires the user to run pub get first if", () {
+    setUp(() {
+      d.dir(appPath, [
+        d.appPubspec(),
+        d.dir("web", []),
+        d.dir("bin", [
+          d.file("script.dart", "main() => print('hello!');")
+        ])
+      ]).create();
+
+      pubGet();
+
+      // Delay a bit to make sure the modification times are noticeably
+      // different. 1s seems to be the finest granularity that dart:io reports.
+      schedule(() => new Future.delayed(new Duration(seconds: 1)));
+    });
+
+    group("there's no lockfile", () {
+      setUp(() {
+        schedule(() => deleteEntry(p.join(sandboxDir, "myapp/pubspec.lock")));
+      });
+
+      _forEveryCommand(
+          'No pubspec.lock file found, please run "pub get" first.');
+    });
+
+    group("there's no package spec", () {
+      setUp(() {
+        schedule(() => deleteEntry(p.join(sandboxDir, "myapp/.packages")));
+      });
+
+      _forEveryCommand('No .packages file found, please run "pub get" first.');
+    });
+
+    group("the pubspec is newer than the package spec", () {
+      setUp(() {
+        schedule(() => _touch("pubspec.yaml"));
+      });
+
+      _forEveryCommand('The pubspec.yaml file has changed since the .packages '
+          'file was generated, please run "pub get" again.');
+    });
+
+    group("the lockfile is newer than the package spec", () {
+      setUp(() {
+        schedule(() => _touch("pubspec.lock"));
+      });
+
+      _forEveryCommand('The pubspec.lock file has changed since the .packages '
+          'file was generated, please run "pub get" again.');
+    });
+  });
+}
+
+/// Runs every command that care about the world being up-to-date, and asserts
+/// that it prints [message] as part of its error.
+void _forEveryCommand(String message) {
+  for (var command in ["build", "serve", "run", "deps"]) {
+    integration("for pub $command", () {
+      var args = [command];
+      if (command == "run") args.add("script");
+
+      var output;
+      var error;
+      if (command == "list-package-dirs") {
+        output = contains(JSON.encode(message));
+      } else {
+        error = contains(message);
+      }
+
+      schedulePub(
+          args: args,
+          output: output,
+          error: error,
+          exitCode: exit_codes.DATA);
+    });
+  }
+}
+
+void _touch(String path) {
+  path = p.join(sandboxDir, "myapp", path);
+  writeTextFile(path, readTextFile(path) + " ");
+}