Introduce utility method for working with multifile tests

compiler/tests/org/jetbrains/jet/jetTestUtils.kt

@@ -16,4 +16,22 @@
 
 package org.jetbrains.jet.test.util
 
-fun String.removeTrailingWhitespacesFromEachLine() = split('\n') map { it.trimTrailing() } makeString ("\n")
+import com.intellij.testFramework.fixtures.CodeInsightTestFixture
+import com.intellij.openapi.util.io.FileUtil
+import java.io.File
+
+public fun String.removeTrailingWhitespacesFromEachLine(): String = split('\n') map { it.trimTrailing() } makeString ("\n")
+
+public fun CodeInsightTestFixture.configureWithExtraFile(path: String, extraNamePart: String = ".Data") {
+    val noExtensionPath = FileUtil.getNameWithoutExtension(path)
+    val extraPath = array("kt", "java").stream()
+            .map { ext -> "$noExtensionPath$extraNamePart.$ext" }
+            .firstOrNull { extraPath -> File(extraPath).exists() }
+
+    if (extraPath != null) {
+        configureByFiles(path, extraPath)
+    }
+    else {
+        configureByFile(path)
+    }
+}

idea/tests/org/jetbrains/jet/completion/weighers/AbstractCompletionWeigherTest.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2014 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.
@@ -23,30 +23,19 @@ import org.jetbrains.jet.plugin.PluginTestCaseBase
 import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase
 import org.testng.Assert
 import com.intellij.openapi.util.io.FileUtil
+import org.jetbrains.jet.test.util.configureWithExtraFile
 
 public abstract class AbstractCompletionWeigherTest() : LightCodeInsightFixtureTestCase() {
     fun doTest(path: String) {
-        val fixture = myFixture!!
+        myFixture.configureWithExtraFile(path)
 
-        val testFile = File(path)
-
-        val dataFileName = FileUtil.getNameWithoutExtension(testFile) + ".Data.kt"
-        val dataFile = File(testFile.getParent(), dataFileName)
-
-        if (dataFile.exists()) {
-            fixture.configureByFiles(path, FileUtil.toSystemIndependentName(dataFile.getPath()))
-        }
-        else {
-            fixture.configureByFile(path)
-        }
-
-        val text = fixture.getEditor()!!.getDocument().getText()
+        val text = myFixture.getEditor().getDocument().getText()
 
         val items = InTextDirectivesUtils.findArrayWithPrefixes(text, "// ORDER:")
         Assert.assertTrue(!items.isEmpty(), """Some items should be defined with "// ORDER:" directive""")
 
-        fixture.complete(CompletionType.BASIC, InTextDirectivesUtils.getPrefixedInt(text, "// INVOCATION_COUNT:") ?: 1)
-        fixture.assertPreferredCompletionItems(InTextDirectivesUtils.getPrefixedInt(text, "// SELECTED:") ?: 0, *items)
+        myFixture.complete(CompletionType.BASIC, InTextDirectivesUtils.getPrefixedInt(text, "// INVOCATION_COUNT:") ?: 1)
+        myFixture.assertPreferredCompletionItems(InTextDirectivesUtils.getPrefixedInt(text, "// SELECTED:") ?: 0, *items)
     }
 
     protected override fun getTestDataPath() : String? {

idea/tests/org/jetbrains/jet/editor/quickDoc/AbstractJetQuickDocProviderTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2014 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.
@@ -34,6 +34,7 @@ import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.jetbrains.jet.InTextDirectivesUtils;
 import org.jetbrains.jet.plugin.ProjectDescriptorWithStdlibSources;
+import org.jetbrains.jet.test.util.UtilPackage;
 
 import java.io.File;
 import java.util.Collection;
@@ -41,7 +42,7 @@ import java.util.List;
 
 public abstract class AbstractJetQuickDocProviderTest extends LightCodeInsightFixtureTestCase {
     public void doTest(@NotNull String path) throws Exception {
-        myFixture.configureByFiles(ArrayUtil.toStringArray(getTestFiles(path)));
+        UtilPackage.configureWithExtraFile(myFixture, path, "_Data");
 
         PsiElement element = myFixture.getFile().findElementAt(myFixture.getEditor().getCaretModel().getOffset());
         assertNotNull("Can't find element at caret in file: " + path, element);
@@ -85,29 +86,4 @@ public abstract class AbstractJetQuickDocProviderTest extends LightCodeInsightFi
     protected LightProjectDescriptor getProjectDescriptor() {
         return ProjectDescriptorWithStdlibSources.INSTANCE;
     }
-
-    @Nullable
-    private static Collection<String> getTestFiles(@NotNull String path) {
-        File testFile = new File(path);
-        String testFileName = FileUtil.getNameWithoutExtension(testFile);
-
-        List<String> filePaths = Lists.newArrayList();
-
-        filePaths.add(path);
-
-        filePaths.add(checkDataFileWithSuffix(testFile, testFileName, "_Data.kt"));
-        filePaths.add(checkDataFileWithSuffix(testFile, testFileName, "_Data.java"));
-
-        return Collections2.filter(filePaths, Predicates.notNull());
-    }
-
-    private static String checkDataFileWithSuffix(File testFile, String testFileName, String dataFileSuffix) {
-        String ktDataFileName = testFileName + dataFileSuffix;
-        File ktDataFile = new File(testFile.getParent(), ktDataFileName);
-        if (ktDataFile.exists()) {
-            return FileUtil.normalize(ktDataFile.getPath());
-        }
-
-        return null;
-    }
 }

idea/tests/org/jetbrains/jet/resolve/AbstractReferenceResolveTest.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2013 JetBrains s.r.o.
+ * Copyright 2010-2014 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.
@@ -30,6 +30,7 @@ import junit.framework.Assert;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.jet.InTextDirectivesUtils;
 import org.jetbrains.jet.plugin.JetWithJdkAndRuntimeLightProjectDescriptor;
+import org.jetbrains.jet.test.util.UtilPackage;
 import org.jetbrains.jet.testing.ReferenceUtils;
 
 import java.io.File;
@@ -65,14 +66,7 @@ public abstract class AbstractReferenceResolveTest extends LightPlatformCodeInsi
 
     protected void doTest(String path) {
         assert path.endsWith(".kt") : path;
-        String extraFile = path.replace(".kt", ".Data.kt");
-        if (new File(extraFile).exists()) {
-            myFixture.configureByFiles(path, extraFile);
-        }
-        else {
-            myFixture.configureByFile(path);
-        }
-
+        UtilPackage.configureWithExtraFile(myFixture, path, ".Data");
         performChecks();
     }