basic tests for PsiErrorElementUtil (IDEA-CR-16497)

platform/platform-tests/testSrc/com/intellij/util/PsiErrorElementUtilTest.java

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+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+ *
+ * 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.intellij.util;
+
+import com.intellij.openapi.fileTypes.StdFileTypes;
+import com.intellij.psi.PsiFile;
+import com.intellij.testFramework.PlatformTestUtil;
+import com.intellij.testFramework.fixtures.LightPlatformCodeInsightFixtureTestCase;
+import org.jetbrains.annotations.NotNull;
+import org.junit.Assert;
+
+public class PsiErrorElementUtilTest extends LightPlatformCodeInsightFixtureTestCase {
+
+  @NotNull
+  @Override
+  protected String getTestDataPath() {
+    return PlatformTestUtil.getPlatformTestDataPath();
+  }
+
+  public void testNoErrors() throws Exception {
+    PsiFile file = myFixture.configureByText(StdFileTypes.XML, "<hello></hello>");
+    Assert.assertFalse(PsiErrorElementUtil.hasErrors(getProject(), file.getVirtualFile()));
+  }
+
+  public void testErrors() throws Exception {
+    PsiFile file = myFixture.configureByText(StdFileTypes.XML, "<hello></hello");
+    Assert.assertTrue(PsiErrorElementUtil.hasErrors(getProject(), file.getVirtualFile()));
+  }
+}