Validate packages against their SDK constraints.

utils/tests/pub/sdk_constraint_test.dart

Index: utils/tests/pub/sdk_constraint_test.dart
diff --git a/utils/tests/pub/sdk_constraint_test.dart b/utils/tests/pub/sdk_constraint_test.dart
new file mode 100644
index 0000000000000000000000000000000000000000..3f934b97b1dd747a1bb9d3d99250cdfa1858d042
--- /dev/null
+++ b/utils/tests/pub/sdk_constraint_test.dart
@@ -0,0 +1,121 @@
+// Copyright (c) 2012, 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.
+
+library check_sdk_test;
+
+import "test_pub.dart";
+import "../../../pkg/unittest/lib/unittest.dart";
+
+main() {
+  initConfig();
+
+  for (var command in ["install", "update"]) {
+    var success = new RegExp(r"Dependencies installed!$");
+    if (command == "update") {
+      success = new RegExp(r"Dependencies updated!$");
+    }
+
+    integration("gives a friendly message if there are no constraints", () {
+      dir(appPath, [
+        pubspec({"name": "myapp"}),
+      ]).scheduleCreate();
+
+      schedulePub(args: [command], output: success);
+    });
+
+    integration("gives an error if the root package does not match", () {
+      dir(appPath, [
+        pubspec({
+          "name": "myapp",
+          "environment": {"sdk": ">2.0.0"}
+        })
+      ]).scheduleCreate();
+
+      schedulePub(args: [command],
+          error:
+            """
+            Some packages are not compatible with your SDK version 0.1.2+3:
+            - 'myapp' requires >2.0.0
+
+            You may be able to resolve this by upgrading to the latest Dart SDK
+            or adding a version constraint to use an older version of a package.
+            """);
+    });
+
+    integration("gives an error if some dependencies do not match", () {
+      // Using an SDK source, but this should be true of all sources.
+      dir(sdkPath, [
+        dir("pkg", [
+          dir("foo", [
+            libPubspec("foo", "0.0.1", sdk: ">0.1.3"),
+            libDir("foo")
+          ]),
+          dir("bar", [
+            libPubspec("bar", "0.0.1", sdk: ">0.1.1"),
+            libDir("bar")
+          ])
+        ])
+      ]).scheduleCreate();
+
+      dir(appPath, [
+        pubspec({
+          "name": "myapp",
+          "dependencies": {
+            "foo": { "sdk": "foo" },
+            "bar": { "sdk": "bar" }
+          },
+          "environment": {"sdk": ">2.0.0"}
+        })
+      ]).scheduleCreate();
+
+      schedulePub(args: [command],
+          error:
+            """
+            Some packages are not compatible with your SDK version 0.1.2+3:
+            - 'myapp' requires >2.0.0
+            - 'foo' requires >0.1.3
+
+            You may be able to resolve this by upgrading to the latest Dart SDK
+            or adding a version constraint to use an older version of a package.
+            """);
+    });
+
+    integration("gives an error if a transitive dependency doesn't match", () {
+      // Using an SDK source, but this should be true of all sources.
+      dir(sdkPath, [
+        dir("pkg", [
+          dir("foo", [
+            libPubspec("foo", "0.0.1", deps: [
+              {"sdk": "bar"}
+            ]),
+            libDir("foo")
+          ]),
+          dir("bar", [
+            libPubspec("bar", "0.0.1", sdk: "<0.1.1"),
+            libDir("bar")
+          ])
+        ])
+      ]).scheduleCreate();
+
+      dir(appPath, [
+        pubspec({
+          "name": "myapp",
+          "dependencies": {
+            "foo": { "sdk": "foo" }
+          }
+        })
+      ]).scheduleCreate();
+
+      schedulePub(args: [command],
+          error:
+            """
+            Some packages are not compatible with your SDK version 0.1.2+3:
+            - 'bar' requires <0.1.1
+
+            You may be able to resolve this by upgrading to the latest Dart SDK
+            or adding a version constraint to use an older version of a package.
+            """);
+    });
+  }
+}