/*
* Copyright 2010-2015 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 org.jetbrains.kotlin.generators.tests.generator;
import com.google.common.collect.Lists;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.util.containers.ContainerUtil;
import junit.framework.TestCase;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.generators.util.GeneratorsFileUtil;
import org.jetbrains.kotlin.test.JUnit3RunnerWithInners;
import org.jetbrains.kotlin.test.KotlinTestUtils;
import org.jetbrains.kotlin.test.TargetBackend;
import org.jetbrains.kotlin.test.TestMetadata;
import org.jetbrains.kotlin.utils.Printer;
import org.junit.runner.RunWith;
import java.io.File;
import java.io.IOException;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.Set;
import static kotlin.collections.CollectionsKt.single;
public class TestGenerator {
private static final Set<String> GENERATED_FILES = ContainerUtil.newHashSet();
private static final Class RUNNER = JUnit3RunnerWithInners.class;
private final String baseTestClassPackage;
private final String suiteClassPackage;
private final String suiteClassName;
private final String baseTestClassName;
private final Collection<TestClassModel> testClassModels;
private final String testSourceFilePath;
public TestGenerator(
@NotNull String baseDir,
@NotNull String suiteClassPackage,
@NotNull String suiteClassName,
@NotNull Class<? extends TestCase> baseTestClass,
@NotNull Collection<? extends TestClassModel> testClassModels
) {
this.suiteClassPackage = suiteClassPackage;
this.suiteClassName = suiteClassName;
this.baseTestClassPackage = baseTestClass.getPackage().getName();
this.baseTestClassName = baseTestClass.getSimpleName();
this.testClassModels = Lists.newArrayList(testClassModels);
this.testSourceFilePath = baseDir + "/" + this.suiteClassPackage.replace(".", "/") + "/" + this.suiteClassName + ".java";
if (!GENERATED_FILES.add(testSourceFilePath)) {
throw new IllegalArgumentException("Same test file already generated in current session: " + testSourceFilePath);
}
}
public void generateAndSave() throws IOException {
StringBuilder out = new StringBuilder();
Printer p = new Printer(out);
p.println(FileUtil.loadFile(new File("license/LICENSE.txt")));
p.println("package ", suiteClassPackage, ";");
p.println();
p.println("import com.intellij.testFramework.TestDataPath;");
p.println("import ", RUNNER.getCanonicalName(), ";");
p.println("import " + KotlinTestUtils.class.getCanonicalName() + ";");
p.println("import " + TargetBackend.class.getCanonicalName() + ";");
if (!suiteClassPackage.equals(baseTestClassPackage)) {
p.println("import " + baseTestClassPackage + "." + baseTestClassName + ";");
}
p.println("import " + TestMetadata.class.getCanonicalName() + ";");
p.println("import " + RunWith.class.getCanonicalName() + ";");
p.println();
p.println("import java.io.File;");
p.println("import java.util.regex.Pattern;");
p.println();
p.println("/** This class is generated by {@link ", KotlinTestUtils.TEST_GENERATOR_NAME, "}. DO NOT MODIFY MANUALLY */");
generateSuppressAllWarnings(p);
TestClassModel model;
if (testClassModels.size() == 1) {
model = new DelegatingTestClassModel(single(testClassModels)) {
@NotNull
@Override
public String getName() {
return suiteClassName;
}
};
}
else {
model = new TestClassModel() {
@NotNull
@Override
public Collection<TestClassModel> getInnerTestClasses() {
return testClassModels;
}
@NotNull
@Override
public Collection<MethodModel> getMethods() {
return Collections.emptyList();
}
@Override
public boolean isEmpty() {
return false;
}
@NotNull
@Override
public String getName() {
return suiteClassName;
}
@Override
public String getDataString() {
return null;
}
@Nullable
@Override
public String getDataPathRoot() {
return null;
}
};
}
generateTestClass(p, model, false);
File testSourceFile = new File(testSourceFilePath);
GeneratorsFileUtil.writeFileIfContentChanged(testSourceFile, out.toString(), false);
}
private void generateTestClass(Printer p, TestClassModel testClassModel, boolean isStatic) {
String staticModifier = isStatic ? "static " : "";
generateMetadata(p, testClassModel);
generateTestDataPath(p, testClassModel);
p.println("@RunWith(", RUNNER.getSimpleName(), ".class)");
p.println("public " + staticModifier + "class ", testClassModel.getName(), " extends ", baseTestClassName, " {");
p.pushIndent();
Collection<MethodModel> testMethods = testClassModel.getMethods();
Collection<TestClassModel> innerTestClasses = testClassModel.getInnerTestClasses();
for (Iterator<MethodModel> iterator = testMethods.iterator(); iterator.hasNext(); ) {
MethodModel methodModel = iterator.next();
if (!methodModel.shouldBeGenerated()) continue;
generateTestMethod(p, methodModel);
if (iterator.hasNext() || !innerTestClasses.isEmpty()) {
p.println();
}
}
for (Iterator<TestClassModel> iterator = innerTestClasses.iterator(); iterator.hasNext(); ) {
TestClassModel innerTestClass = iterator.next();
if (!innerTestClass.isEmpty()) {
generateTestClass(p, innerTestClass, true);
if (iterator.hasNext()) {
p.println();
}
}
}
p.popIndent();
p.println("}");
}
private static void generateTestMethod(Printer p, MethodModel methodModel) {
generateMetadata(p, methodModel);
methodModel.generateSignature(p);
p.printWithNoIndent(" {");
p.println();
p.pushIndent();
methodModel.generateBody(p);
p.popIndent();
p.println("}");
}
private static void generateMetadata(Printer p, TestEntityModel testDataSource) {
String dataString = testDataSource.getDataString();
if (dataString != null) {
p.println("@TestMetadata(\"", dataString, "\")");
}
}
private static void generateTestDataPath(Printer p, TestClassModel testClassModel) {
String dataPathRoot = testClassModel.getDataPathRoot();
if (dataPathRoot != null) {
p.println("@TestDataPath(\"", dataPathRoot, "\")");
}
}
private static void generateSuppressAllWarnings(Printer p) {
p.println("@SuppressWarnings(\"all\")");
}
}