Basic 'Quick Fix' support and one fix as example/test

editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/correction/QuickFixProcessorTest.java

Index: editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/correction/QuickFixProcessorTest.java
diff --git a/editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/correction/QuickFixProcessorTest.java b/editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/correction/QuickFixProcessorTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..3ca1d7c0b4f863ac94ac5ba07778a7b1fdafc319
--- /dev/null
+++ b/editor/tools/plugins/com.google.dart.tools.ui_test/src/com/google/dart/tools/ui/correction/QuickFixProcessorTest.java
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2012, the Dart project authors.
+ * 
+ * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ * 
+ * http://www.eclipse.org/legal/epl-v10.html
+ * 
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.google.dart.tools.ui.correction;
+
+import com.google.dart.compiler.ErrorCode;
+import com.google.dart.compiler.resolver.TypeErrorCode;
+import com.google.dart.compiler.util.apache.ArrayUtils;
+import com.google.dart.tools.core.DartCore;
+import com.google.dart.tools.ui.internal.text.correction.AssistContext;
+import com.google.dart.tools.ui.internal.text.correction.ProblemLocation;
+import com.google.dart.tools.ui.internal.text.correction.QuickFixProcessor;
+import com.google.dart.tools.ui.internal.text.correction.proposals.CUCorrectionProposal;
+import com.google.dart.tools.ui.refactoring.AbstractDartTest;
+import com.google.dart.tools.ui.text.dart.IDartCompletionProposal;
+import com.google.dart.tools.ui.text.dart.IProblemLocation;
+import com.google.dart.tools.ui.text.dart.IQuickFixProcessor;
+
+import org.eclipse.core.runtime.CoreException;
+
+import static org.fest.assertions.Assertions.assertThat;
+
+/**
+ * Test for {@link QuickFixProcessor}.
+ */
+public final class QuickFixProcessorTest extends AbstractDartTest {
+  private static final IQuickFixProcessor PROCESSOR = new QuickFixProcessor();
+
+  private ErrorCode problemCode;
+  private int problemOffset;
+  private int problemLength;
+
+  // TODO(scheglov) uncomment when ClassElement will have optionally LibraryPrefixElement 
+  public void _test_useStaticAccess_method_importWithPrefix() throws Exception {
+    setUnitContent("Lib.dart", new String[] {
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "#library('Lib');",
+        "class A {",
+        " static foo() {}",
+        "}",
+        ""});
+    setTestUnitContent(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "#import('Lib.dart', prefix: 'lib');",
+        "main() {",
+        "  lib.A aaaa = new lib.A();",
+        "  aaaa.foo();",
+        "}",
+        "");
+    problemCode = TypeErrorCode.IS_STATIC_METHOD_IN;
+    problemOffset = findOffset("foo();");
+    problemLength = "foo".length();
+    assertQuickFix(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "#import('Lib.dart', prefix: 'lib');",
+        "main() {",
+        "  lib.A aaaa = new lib.A();",
+        "  lib.A.foo();",
+        "}",
+        "");
+  }
+
+  public void test_useStaticAccess_method() throws Exception {
+    setTestUnitContent(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "class A {",
+        " static foo() {}",
+        "}",
+        "main() {",
+        "  A aaaa = new A();",
+        "  aaaa.foo();",
+        "}");
+    problemCode = TypeErrorCode.IS_STATIC_METHOD_IN;
+    problemOffset = findOffset("foo();");
+    problemLength = "foo".length();
+    assertQuickFix(
+        "// filler filler filler filler filler filler filler filler filler filler",
+        "class A {",
+        " static foo() {}",
+        "}",
+        "main() {",
+        "  A aaaa = new A();",
+        "  A.foo();",
+        "}");
+  }
+
+  @Override
+  protected void tearDown() throws Exception {
+    waitEventLoop(0);
+    super.tearDown();
+    waitEventLoop(0);
+  }
+
+  /**
+   * Runs single proposal created for {@link IProblemLocation} using "problem*" fields.
+   */
+  private void assertQuickFix(String... expectedLines) throws CoreException {
+    IProblemLocation problemLocation = new ProblemLocation(
+        problemOffset,
+        problemLength,
+        problemCode,
+        ArrayUtils.EMPTY_STRING_ARRAY,
+        true,
+        DartCore.DART_PROBLEM_MARKER_TYPE);
+    IProblemLocation problemLocations[] = new IProblemLocation[] {problemLocation};
+    // prepare context
+    AssistContext context = new AssistContext(
+        testUnit,
+        problemLocation.getOffset(),
+        problemLocation.getLength());
+    assertTrue(PROCESSOR.hasCorrections(testUnit, problemCode));
+    // run single proposal
+    IDartCompletionProposal[] proposals = PROCESSOR.getCorrections(context, problemLocations);
+    assertThat(proposals).hasSize(1);
+    String result = ((CUCorrectionProposal) proposals[0]).getPreviewContent();
+    // assert result
+    String expectedSource = makeSource(expectedLines);
+    assertEquals(expectedSource, result);
+  }
+}