Precompile immutable dependencies on "pub get".

sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart

Index: sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart
diff --git a/sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart b/sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..86c3baa4b94f2e06d8a37d2922a9e0ba8168f62e
--- /dev/null
+++ b/sdk/lib/_internal/pub/test/get/cache_transformed_dependency_test.dart
@@ -0,0 +1,300 @@
+// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS d.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.
+
+library pub_tests;
+
+import 'package:scheduled_test/scheduled_test.dart';
+
+import '../descriptor.dart' as d;
+import '../test_pub.dart';
+import '../serve/utils.dart';
+
+const MODE_TRANSFORMER = """
+import 'dart:async';
+
+import 'package:barback/barback.dart';
+
+class ModeTransformer extends Transformer {
+  final BarbackSettings _settings;
+
+  ModeTransformer.asPlugin(this._settings);
+
+  String get allowedExtensions => '.dart';
+
+  void apply(Transform transform) {
+    return transform.primaryInput.readAsString().then((contents) {
+      transform.addOutput(new Asset.fromString(
+          transform.primaryInput.id,
+          contents.replaceAll("MODE", _settings.mode.name)));
+    });
+  }
+}
+""";
+
+main() {
+  initConfig();
+
+  integration("caches a transformed dependency", () {
+    servePackages((builder) {
+      builder.serveRepoPackage('barback');
+
+      builder.serve("foo", "1.2.3",
+          deps: {'barback': 'any'},
+          pubspec: {'transformers': ['foo']},
+          contents: [
+        d.dir("lib", [
+          d.file("transformer.dart", replaceTransformer("Hello", "Goodbye")),
+          d.file("foo.dart", "final message = 'Hello!';")
+        ])
+      ]);
+    });
+
+    d.appDir({"foo": "1.2.3"}).create();
+
+    pubGet(output: contains("Precompiled foo."));
+
+    d.dir(appPath, [
+      d.dir(".pub/deps/debug/foo/lib", [
+        d.file("foo.dart", "final message = 'Goodbye!';")
+      ])
+    ]).validate();
+  });
+
+  integration("caches a dependency transformed by its dependency", () {
+    servePackages((builder) {
+      builder.serveRepoPackage('barback');
+
+      builder.serve("foo", "1.2.3",
+          deps: {'bar': '1.2.3'},
+          pubspec: {'transformers': ['bar']},
+          contents: [
+        d.dir("lib", [
+          d.file("foo.dart", "final message = 'Hello!';")
+        ])
+      ]);
+
+      builder.serve("bar", "1.2.3",
+          deps: {'barback': 'any'},
+          contents: [
+        d.dir("lib", [
+          d.file("transformer.dart", replaceTransformer("Hello", "Goodbye"))
+        ])
+      ]);
+    });
+
+    d.appDir({"foo": "1.2.3"}).create();
+
+    pubGet(output: contains("Precompiled foo."));
+
+    d.dir(appPath, [
+      d.dir(".pub/deps/debug/foo/lib", [
+        d.file("foo.dart", "final message = 'Goodbye!';")
+      ])
+    ]).validate();
+  });
+
+  integration("doesn't cache an untransformed dependency", () {
+    servePackages((builder) {
+      builder.serveRepoPackage('barback');
+
+      builder.serve("foo", "1.2.3",
+          contents: [
+        d.dir("lib", [
+          d.file("foo.dart", "final message = 'Hello!';")
+        ])
+      ]);
+    });
+
+    d.appDir({"foo": "1.2.3"}).create();
+
+    pubGet(output: isNot(contains("Precompiled foo.")));
+
+    d.dir(appPath, [d.nothing(".pub/deps")]).validate();
+  });
+
+  integration("recaches when the dependency is updated", () {
+    servePackages((builder) {
+      builder.serveRepoPackage('barback');
+
+      builder.serve("foo", "1.2.3",
+          deps: {'barback': 'any'},
+          pubspec: {'transformers': ['foo']},
+          contents: [
+        d.dir("lib", [
+          d.file("transformer.dart", replaceTransformer("Hello", "Goodbye")),
+          d.file("foo.dart", "final message = 'Hello!';")
+        ])
+      ]);
+
+      builder.serve("foo", "1.2.4",
+          deps: {'barback': 'any'},
+          pubspec: {'transformers': ['foo']},
+          contents: [
+        d.dir("lib", [
+          d.file("transformer.dart", replaceTransformer("Hello", "See ya")),
+          d.file("foo.dart", "final message = 'Hello!';")
+        ])
+      ]);
+    });
+
+    d.appDir({"foo": "1.2.3"}).create();
+
+    pubGet(output: contains("Precompiled foo."));
+
+    d.dir(appPath, [
+      d.dir(".pub/deps/debug/foo/lib", [
+        d.file("foo.dart", "final message = 'Goodbye!';")
+      ])
+    ]).validate();
+
+    // Upgrade to the new version of foo.
+    d.appDir({"foo": "1.2.4"}).create();
+
+    pubGet(output: contains("Precompiled foo."));
+
+    d.dir(appPath, [
+      d.dir(".pub/deps/debug/foo/lib", [
+        d.file("foo.dart", "final message = 'See ya!';")
+      ])
+    ]).validate();
+  });
+
+  integration("recaches when a transitive dependency is updated", () {
+    servePackages((builder) {
+      builder.serveRepoPackage('barback');
+
+      builder.serve("foo", "1.2.3",
+          deps: {
+            'barback': 'any',
+            'bar': 'any'
+          },
+          pubspec: {'transformers': ['foo']},
+          contents: [
+        d.dir("lib", [
+          d.file("transformer.dart", replaceTransformer("Hello", "Goodbye")),
+          d.file("foo.dart", "final message = 'Hello!';")
+        ])
+      ]);
+
+      builder.serve("bar", "5.6.7");
+    });
+
+    d.appDir({"foo": "1.2.3"}).create();
+    pubGet(output: contains("Precompiled foo."));
+
+    servePackages((builder) => builder.serve("bar", "6.0.0"));
+    pubUpgrade(output: contains("Precompiled foo."));
+  });
+
+  integration("doesn't recache when an unrelated dependency is updated", () {
+    servePackages((builder) {
+      builder.serveRepoPackage('barback');
+
+      builder.serve("foo", "1.2.3",
+          deps: {'barback': 'any'},
+          pubspec: {'transformers': ['foo']},
+          contents: [
+        d.dir("lib", [
+          d.file("transformer.dart", replaceTransformer("Hello", "Goodbye")),
+          d.file("foo.dart", "final message = 'Hello!';")
+        ])
+      ]);
+
+      builder.serve("bar", "5.6.7");
+    });
+
+    d.appDir({"foo": "1.2.3"}).create();
+    pubGet(output: contains("Precompiled foo."));
+
+    servePackages((builder) => builder.serve("bar", "6.0.0"));
+    pubUpgrade(output: isNot(contains("Precompiled foo.")));
+  });
+
+  integration("caches the dependency in debug mode", () {
+    servePackages((builder) {
+      builder.serveRepoPackage('barback');
+
+      builder.serve("foo", "1.2.3",
+          deps: {'barback': 'any'},
+          pubspec: {'transformers': ['foo']},
+          contents: [
+        d.dir("lib", [
+          d.file("transformer.dart", MODE_TRANSFORMER),
+          d.file("foo.dart", "final mode = 'MODE';")
+        ])
+      ]);
+    });
+
+    d.appDir({"foo": "1.2.3"}).create();
+
+    pubGet(output: contains("Precompiled foo."));
+
+    d.dir(appPath, [
+      d.dir(".pub/deps/debug/foo/lib", [
+        d.file("foo.dart", "final mode = 'debug';")
+      ])
+    ]).validate();
+  });
+
+  // TODO(nweiz): Implement this.
+  // integration("loads code from the cache", () {
+  //   servePackages((builder) {
+  //     builder.serveRepoPackage('barback');
+  //
+  //     builder.serve("foo", "1.2.3",
+  //         deps: {'barback': 'any'},
+  //         pubspec: {'transformers': ['foo']},
+  //         contents: [
+  //       d.dir("lib", [
+  //         d.file("transformer.dart", replaceTransformer("Hello", "Goodbye")),
+  //         d.file("foo.dart", "final message = 'Hello!';")
+  //       ])
+  //     ]);
+  //   });
+  //
+  //   d.dir(appPath, [
+  //     d.appPubspec({"foo": "1.2.3"}),
+  //     d.dir('bin', [
+  //       d.file('script.dart', """
+  //         import 'package:foo/foo.dart';
+  //
+  //         void main() => print(message);""")
+  //     ])
+  //   ]).create();
+  //
+  //   pubGet(output: contains("Precompiled foo."));
+  //
+  //   d.dir(appPath, [
+  //     d.dir(".pub/deps/debug/foo/lib", [
+  //       d.file("foo.dart", "final message = 'Modified!';")
+  //     ])
+  //   ]).create();
+  //
+  //   var pub = pubRun(args: ["script"]);
+  //   pub.stdout.expect("Modified!");
+  //   pub.shouldExit();
+  // });
+}
+
+String replaceTransformer(String input, String output) {
+  return """
+import 'dart:async';
+
+import 'package:barback/barback.dart';
+
+class ReplaceTransformer extends Transformer {
+  ReplaceTransformer.asPlugin();
+
+  String get allowedExtensions => '.dart';
+
+  Future apply(Transform transform) {
+    return transform.primaryInput.readAsString().then((contents) {
+      transform.addOutput(new Asset.fromString(
+          transform.primaryInput.id,
+          contents.replaceAll("$input", "$output")));
+    });
+  }
+}
+""";
+}