Merge "Coverage: add mapping file parsing in the reporter" into ub-jack
diff --git a/jack-jacoco-reporter/src/com/android/jack/tools/jacoco/MappingFileLoader.java b/jack-jacoco-reporter/src/com/android/jack/tools/jacoco/MappingFileLoader.java
new file mode 100644
index 0000000..f76e5b5
--- /dev/null
+++ b/jack-jacoco-reporter/src/com/android/jack/tools/jacoco/MappingFileLoader.java
@@ -0,0 +1,334 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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.android.jack.tools.jacoco;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Map.Entry;
+import javax.annotation.CheckForNull;
+import javax.annotation.Nonnegative;
+import javax.annotation.Nonnull;
+
+/**
+ * A mapping file loader that loads only class and method mappings.
+ */
+public class MappingFileLoader {
+
+ @Nonnull
+ private static final char[] EMPTY_STOP_CHARS = new char[] {};
+
+ @Nonnull
+ private static final char[] CLASSINFO_STOP_CHARS = new char[] {':'};
+
+ @Nonnull
+ private final Map<String, ClassMapping> oldToNewClassMapping =
+ new HashMap<String, ClassMapping>();
+
+ @Nonnull
+ private final Map<String, ClassMapping> newToOldClassMapping =
+ new HashMap<String, ClassMapping>();
+
+ @CheckForNull
+ public ClassMapping getClassMapping(@Nonnull String classBinaryName) {
+ // It must be a class descriptor (like 'com/sub/Foo')
+ assert classBinaryName.indexOf('.') < 0;
+ assert classBinaryName.indexOf('/') > 0;
+ return newToOldClassMapping.get(classBinaryName);
+ }
+
+ public void load(@Nonnull InputStream input) throws IOException {
+ BufferedReader reader = new BufferedReader(new InputStreamReader(input));
+ ClassMapping currentClassDesc = null;
+ String line;
+ while ((line = reader.readLine()) != null) {
+ // Remove leading and trailing whitespaces.
+ line = line.trim();
+ if (line.charAt(line.length() - 1) == ':') {
+ // Class mapping line
+ currentClassDesc = readClassInfo(line);
+ ClassMapping previous =
+ newToOldClassMapping.put(currentClassDesc.getClassName(), currentClassDesc);
+ assert previous == null;
+ previous =
+ oldToNewClassMapping.put(currentClassDesc.getOriginalClassName(), currentClassDesc);
+ assert previous == null;
+ } else if (line.indexOf('(') > 0) {
+ // Method mapping line
+ readMethodInfo(line, currentClassDesc);
+ } else {
+ // Ignore other lines (like field info)
+ }
+ }
+
+ // Now that we know how types may have been renamed by obfuscation, we need to update method
+ // signatures accordingly.
+ updateMethodMappings();
+ }
+
+ private void updateMethodMappings() {
+ assert oldToNewClassMapping.size() == newToOldClassMapping.size();
+ for (ClassMapping cd : newToOldClassMapping.values()) {
+ cd.updateMethodMapping(this);
+ }
+ }
+
+ @Nonnull
+ private ClassMapping readClassInfo(@Nonnull String line) {
+ // qualifiedOldClassName -> newClassName:
+ try {
+ int startIndex = readWhiteSpaces(line, 0);
+ int endIndex = readNameUntilSeparatorOrWhitespace(line, startIndex);
+ String qualifiedOldClassName = line.substring(startIndex, endIndex);
+ startIndex = readWhiteSpaces(line, endIndex);
+ startIndex = readSeparator(line, startIndex);
+ startIndex = readWhiteSpaces(line, startIndex);
+ endIndex = readName(line, startIndex, CLASSINFO_STOP_CHARS);
+ String newClassName = line.substring(startIndex, endIndex);
+ return new ClassMapping(NamingUtils.fqNameToBinaryName(newClassName),
+ NamingUtils.fqNameToBinaryName(qualifiedOldClassName));
+ } catch (ArrayIndexOutOfBoundsException e) {
+ throw new AssertionError("Invalid line '" + line + "'");
+ }
+ }
+
+ private void readMethodInfo(@Nonnull String line, @Nonnull ClassMapping currentClassDesc) {
+ // (startLineInfo:endLineInfo:)? type oldMethodName\((type(, type)*)?\) -> newMethodName
+ int startIndex = readWhiteSpaces(line, 0);
+ startIndex = readLineInfo(line, startIndex);
+ startIndex = readWhiteSpaces(line, startIndex);
+ int endIndex = line.indexOf(')', startIndex);
+ assert endIndex > 0;
+ String oldMethodDeclaration = line.substring(startIndex, endIndex + 1);
+ startIndex = endIndex + 1;
+ startIndex = readWhiteSpaces(line, startIndex);
+ startIndex = readSeparator(line, startIndex);
+ startIndex = readWhiteSpaces(line, startIndex);
+ endIndex = readName(line, startIndex, EMPTY_STOP_CHARS);
+ String newMethodName = line.substring(startIndex, endIndex);
+
+ // Add method info to current class.
+ currentClassDesc.addMethod(oldMethodDeclaration, newMethodName);
+ }
+
+ @Nonnegative
+ private int readNameUntilSeparatorOrWhitespace(@Nonnull String line, @Nonnegative int index) {
+ int length = line.length();
+ char c = line.charAt(index);
+ while (!Character.isWhitespace(c)) {
+ if (c == '-' && line.charAt(index + 1) == '>') {
+ // We check the second char to avoid bad parsing of names containing '-'
+ break;
+ }
+ if (++index < length) {
+ c = line.charAt(index);
+ } else {
+ break;
+ }
+ }
+ return index;
+ }
+
+ private static int readSeparator(@Nonnull String line, int index) {
+ if (line.charAt(index) != '-' || line.charAt(index + 1) != '>') {
+ throw new AssertionError();
+ }
+ return index + 2;
+ }
+
+ private static int readName(@Nonnull String line, @Nonnegative int index,
+ @Nonnull char[] stopChars) {
+ int length = line.length();
+ char c = line.charAt(index);
+ while (!Character.isWhitespace(c) && !charInArray(c, stopChars)) {
+ if (++index < length) {
+ c = line.charAt(index);
+ } else {
+ break;
+ }
+ }
+ return index;
+ }
+
+ private static boolean charInArray(char c, @Nonnull char[] array) {
+ for (char c2 : array) {
+ if (c == c2) {
+ return true;
+ }
+ }
+ return false;
+ }
+
+ private static int readWhiteSpaces(@Nonnull String line, @Nonnegative int index) {
+ while (Character.isWhitespace(line.charAt(index))) {
+ ++index;
+ }
+ return index;
+ }
+
+ private static int readLineInfo(@Nonnull String line, @Nonnegative int index) {
+ char c = line.charAt(index);
+ while (Character.isDigit(c) || c == ':') {
+ index++;
+ c = line.charAt(index);
+ }
+ return index;
+ }
+
+
+ /**
+ * A description of the class in the mapping file
+ */
+ public static class ClassMapping {
+ @Nonnull
+ private final String className;
+ @Nonnull
+ private final String originalClassName;
+
+ /**
+ * Temporary map associating original method declarations to their new method name (without
+ * parameter signatures). This map is set to null once the final mapping is computed.
+ */
+ @CheckForNull
+ private Map<String, String> oldToNewMethodMap = new HashMap<String, String>();
+
+ /**
+ * Maps method signatures to their original one.
+ */
+ @CheckForNull
+ private Map<String, String> newToOldMethodMap = null;
+
+ public ClassMapping(@Nonnull String className, @Nonnull String originalName) {
+ this.className = className;
+ this.originalClassName = originalName;
+ }
+
+ @Nonnull
+ public String getClassName() {
+ return className;
+ }
+
+ @Nonnull
+ public String getOriginalClassName() {
+ return originalClassName;
+ }
+
+ public void updateMethodMapping(@Nonnull MappingFileLoader loader) {
+ assert newToOldMethodMap == null;
+ assert oldToNewMethodMap != null;
+
+ newToOldMethodMap = new HashMap<String, String>(oldToNewMethodMap.size());
+ for (Entry<String, String> e : oldToNewMethodMap.entrySet()) {
+ String oldMethodDeclaration = e.getKey();
+ String newMethodName = e.getValue();
+
+ // The old method declaration is '<returnType> <oldName>(<paramType>[,<paramType>]*)'
+
+ // Extract return type.
+ int returnTypeEndPos = oldMethodDeclaration.indexOf(' ');
+ String returnType = oldMethodDeclaration.substring(0, returnTypeEndPos);
+
+ // Extract methodName
+ int oldMethodNameStartPos = readWhiteSpaces(oldMethodDeclaration, returnTypeEndPos);
+ int oldMethodNameEndPos = oldMethodDeclaration.indexOf('(', oldMethodNameStartPos);
+ String oldMethodName =
+ oldMethodDeclaration.substring(oldMethodNameStartPos, oldMethodNameEndPos);
+
+ // Extract parameters
+ int parameterListStartPos = oldMethodNameEndPos + 1;
+ int parameterListEndPos = oldMethodDeclaration.indexOf(')', parameterListStartPos);
+ String parameterList =
+ oldMethodDeclaration.substring(parameterListStartPos, parameterListEndPos);
+ String[] paramTypes = parameterList.isEmpty() ? new String[0] : parameterList.split(",");
+
+ // Create old and new signatures.
+ StringBuilder oldMethodSig = new StringBuilder(oldMethodName);
+ StringBuilder newMethodSig = new StringBuilder(newMethodName);
+ oldMethodSig.append('(');
+ newMethodSig.append('(');
+
+ // Convert parameters.
+ for (String parameterType : paramTypes) {
+ // Remove leading/trailing whitespaces.
+ parameterType = parameterType.trim();
+ String oldParameterTypeSig = NamingUtils.fqNameToSignature(parameterType);
+ String newParameterTypeSig = oldToNewClassName(loader, oldParameterTypeSig);
+ oldMethodSig.append(oldParameterTypeSig);
+ newMethodSig.append(newParameterTypeSig);
+ }
+
+ oldMethodSig.append(')');
+ newMethodSig.append(')');
+
+ // Append return type
+ String oldReturnTypeSig = NamingUtils.fqNameToSignature(returnType);
+ String newReturnTypeSig = oldToNewClassName(loader, oldReturnTypeSig);
+ oldMethodSig.append(oldReturnTypeSig);
+ newMethodSig.append(newReturnTypeSig);
+
+ newToOldMethodMap.put(newMethodSig.toString(), oldMethodSig.toString());
+ }
+
+ // Reset the map with finalized entries.
+ oldToNewMethodMap = null;
+ }
+
+ @Nonnull
+ private static String oldToNewClassName(@Nonnull MappingFileLoader loader,
+ @Nonnull String oldClassName) {
+ int lastCharPos = oldClassName.length() - 1;
+ if (oldClassName.charAt(lastCharPos) != ';') {
+ // THis is not a reference type: nothing to convert
+ return oldClassName;
+ }
+ if (oldClassName.charAt(0) == '[') {
+ return '[' + oldToNewClassName(loader, oldClassName.substring(1));
+ }
+ assert oldClassName.charAt(0) == 'L';
+ String binaryName = NamingUtils.signatureToBinaryName(oldClassName);
+ ClassMapping cm = loader.oldToNewClassMapping.get(binaryName);
+ if (cm != null) {
+ // Convert old to new.
+ return NamingUtils.binaryNameToSignature(cm.getClassName());
+ } else {
+ // No mapping so nothing to convert.
+ return oldClassName;
+ }
+ }
+
+ /**
+ * Return the original method signature for the given signature or null if it is not part of
+ * the mapping.
+ */
+ @CheckForNull
+ public String getOriginalMethodSignature(@Nonnull String methodSignature) {
+ assert newToOldMethodMap != null;
+ assert oldToNewMethodMap == null;
+ return newToOldMethodMap.get(methodSignature);
+ }
+
+ public void addMethod(@Nonnull String oldMethodDeclaration, @Nonnull String newMethodName) {
+ assert oldToNewMethodMap != null;
+ assert newToOldMethodMap == null;
+ oldToNewMethodMap.put(oldMethodDeclaration, newMethodName);
+ }
+
+ }
+}
diff --git a/jack-jacoco-reporter/src/com/android/jack/tools/jacoco/NamingUtils.java b/jack-jacoco-reporter/src/com/android/jack/tools/jacoco/NamingUtils.java
new file mode 100644
index 0000000..a882eb4
--- /dev/null
+++ b/jack-jacoco-reporter/src/com/android/jack/tools/jacoco/NamingUtils.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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.android.jack.tools.jacoco;
+
+import javax.annotation.Nonnull;
+
+/**
+ * Utilities for class names.
+ */
+public class NamingUtils {
+
+ /**
+ * Convert fully qualified name (primitive or reference) to binary name.
+ *
+ * @param typeName the fully-qualified name to convert
+ * @return the binary name of the class
+ */
+ @Nonnull
+ public static String fqNameToBinaryName(@Nonnull String typeName) {
+ assert typeName.indexOf('/') < 0;
+ return typeName.replace('.', '/');
+ }
+
+ @Nonnull
+ public static String binaryNameToFqName(@Nonnull String binaryName) {
+ assert binaryName.indexOf('.') < 0;
+ return binaryName.replace('/', '.');
+ }
+
+ /**
+ * Converts the fully qualified name to a signature.
+ */
+ @Nonnull
+ public static String fqNameToSignature(@Nonnull String typeName) {
+ int arrayPos = typeName.lastIndexOf('[');
+ if (arrayPos > 0) {
+ assert arrayPos == typeName.length() - 2;
+ assert typeName.charAt(arrayPos + 1) == ']';
+ return '[' + fqNameToSignature(typeName.substring(0, arrayPos));
+ } else if (typeName.equals("boolean")) {
+ return "Z";
+ } else if (typeName.equals("byte")) {
+ return "B";
+ } else if (typeName.equals("char")) {
+ return "C";
+ } else if (typeName.equals("short")) {
+ return "S";
+ } else if (typeName.equals("int")) {
+ return "I";
+ } else if (typeName.equals("float")) {
+ return "F";
+ } else if (typeName.equals("double")) {
+ return "D";
+ } else if (typeName.equals("long")) {
+ return "J";
+ } else if (typeName.equals("void")) {
+ return "V";
+ } else {
+ return binaryNameToSignature(fqNameToBinaryName(typeName));
+ }
+ }
+
+ @Nonnull
+ public static String binaryNameToSignature(@Nonnull String binaryName) {
+ assert binaryName.indexOf('.') < 0;
+ return 'L' + binaryName + ';';
+ }
+
+ @Nonnull
+ public static String signatureToBinaryName(@Nonnull String signature) {
+ assert signature.length() > 2; // at least one character between 'L' and ';';
+ assert signature.charAt(0) == 'L';
+ int lastCharPos = signature.length() - 1;
+ assert lastCharPos > 1;
+ assert signature.charAt(lastCharPos) == ';';
+ return signature.substring(1, lastCharPos);
+ }
+}
diff --git a/jack-jacoco-reporter/tests/com/android/jack/tools/jacoco/AllTests.java b/jack-jacoco-reporter/tests/com/android/jack/tools/jacoco/AllTests.java
index 640fd98..b62b083 100644
--- a/jack-jacoco-reporter/tests/com/android/jack/tools/jacoco/AllTests.java
+++ b/jack-jacoco-reporter/tests/com/android/jack/tools/jacoco/AllTests.java
@@ -21,5 +21,10 @@
import org.junit.runners.Suite.SuiteClasses;
@RunWith(Suite.class)
-@SuiteClasses(value = {OptionsTest.class, JackCoverageAnalyzerTest.class, ReporterTest.class})
-public class AllTests {}
+@SuiteClasses(value = {
+ JackCoverageAnalyzerTest.class,
+ MappingFileLoaderTest.class,
+ OptionsTest.class,
+ ReporterTest.class})
+public class AllTests {
+}
diff --git a/jack-jacoco-reporter/tests/com/android/jack/tools/jacoco/MappingFileLoaderTest.java b/jack-jacoco-reporter/tests/com/android/jack/tools/jacoco/MappingFileLoaderTest.java
new file mode 100644
index 0000000..e42641b
--- /dev/null
+++ b/jack-jacoco-reporter/tests/com/android/jack/tools/jacoco/MappingFileLoaderTest.java
@@ -0,0 +1,222 @@
+/*
+ * Copyright (C) 2016 The Android Open Source Project
+ *
+ * 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.android.jack.tools.jacoco;
+
+import com.android.jack.tools.jacoco.MappingFileLoader.ClassMapping;
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+import javax.annotation.Nonnull;
+import junit.framework.Assert;
+import org.junit.Test;
+
+public class MappingFileLoaderTest {
+
+ @Test
+ public void testClassLineParsing() throws IOException {
+ String oldClassName = "com.Foo";
+ String newClassName = "com.A";
+
+ List<String> testLines = generateStringWithSpaces(oldClassName, "->", newClassName, ":");
+ for (String testLine : testLines) {
+ MappingFileLoader loader = loadMappingFile(testLine);
+
+ ClassMapping cm = loader.getClassMapping(NamingUtils.fqNameToBinaryName(newClassName));
+ Assert.assertNotNull("No match for line '" + testLine + "'", cm);
+ Assert.assertEquals("Invalid mapping for line '" + testLine + "'",
+ NamingUtils.fqNameToBinaryName(oldClassName), cm.getOriginalClassName());
+ }
+ }
+
+ @Test
+ public void testMethodLineParsing() throws IOException {
+ String oldClassName = "com.Foo";
+ String newClassName = "com.A";
+
+ List<String> testLines = generateStringWithSpaces("void m()", "->", "newM");
+ for (String testLine : testLines) {
+ MappingFileLoader loader = loadMappingFile(
+ "com.Foo -> com.A:",
+ testLine);
+
+ ClassMapping cm = loader.getClassMapping(NamingUtils.fqNameToBinaryName(newClassName));
+ Assert.assertNotNull("No match for line '" + testLine + "'", cm);
+ Assert.assertEquals("Invalid mapping for line '" + testLine + "'",
+ NamingUtils.fqNameToBinaryName(oldClassName), cm.getOriginalClassName());
+ Assert.assertEquals("Failure with line '" + testLine + "'",
+ "m()V", cm.getOriginalMethodSignature("newM()V"));
+ }
+ }
+
+ @Test
+ public void testMethodLineParsingWithLineInfo() throws IOException {
+ String oldClassName = "com.Foo";
+ String newClassName = "com.A";
+
+ List<String> testLines = generateStringWithSpaces("1:5", "void m()", "->", "newM");
+ for (String testLine : testLines) {
+ MappingFileLoader loader = loadMappingFile(
+ "com.Foo -> com.A:",
+ testLine);
+
+ ClassMapping cm = loader.getClassMapping(NamingUtils.fqNameToBinaryName(newClassName));
+ Assert.assertNotNull("No match for line '" + testLine + "'", cm);
+ Assert.assertEquals("Invalid mapping for line '" + testLine + "'",
+ NamingUtils.fqNameToBinaryName(oldClassName), cm.getOriginalClassName());
+ Assert.assertEquals("Failure with line '" + testLine + "'",
+ "m()V", cm.getOriginalMethodSignature("newM()V"));
+ }
+ }
+
+ @Test
+ public void testParsingWithignoredFieldInfo() throws IOException {
+ String oldClassName = "com.Foo";
+ String newClassName = "com.A";
+
+ List<String> testLines = generateStringWithSpaces("void m()", "->", "newM");
+ for (String testLine : testLines) {
+ MappingFileLoader loader = loadMappingFile(
+ "com.Foo -> com.A:",
+ "void m() -> newM",
+ "oldField -> newField");
+
+ ClassMapping cm = loader.getClassMapping(NamingUtils.fqNameToBinaryName(newClassName));
+ Assert.assertNotNull("No match for line '" + testLine + "'", cm);
+ Assert.assertEquals("Invalid mapping for line '" + testLine + "'",
+ NamingUtils.fqNameToBinaryName(oldClassName), cm.getOriginalClassName());
+ Assert.assertEquals("Failure with line '" + testLine + "'",
+ "m()V", cm.getOriginalMethodSignature("newM()V"));
+ }
+ }
+
+ @Test
+ public void testInvalidClassLine() throws IOException {
+ // Missing trailing ':' character.
+ byte[] buffer = buildBuffer("com.Foo -> com.A");
+
+ MappingFileLoader loader = new MappingFileLoader();
+ InputStream input = new ByteArrayInputStream(buffer);
+ try {
+ loader.load(input);
+ Assert.fail();
+ } catch (AssertionError expected) {
+ // OK, we got our exception.
+ } finally {
+ input.close();
+ }
+ }
+
+ @Test
+ public void testSignatureConversion() throws IOException {
+ MappingFileLoader loader = loadMappingFile(
+ "com.Foo -> com.A:",
+ "void m(int) -> newM1",
+ "void m(int, int) -> newM2",
+ "void m(com.Foo) -> newM3",
+ "void m(com.Foo[]) -> newM4"
+ );
+ ClassMapping cm = loader.getClassMapping("com/A");
+ Assert.assertNotNull(cm);
+
+ // Check unknown signature
+ Assert.assertNull(cm.getOriginalMethodSignature("notRenamed()V"));
+
+ // Check conversions
+ Assert.assertEquals("m(I)V", cm.getOriginalMethodSignature("newM1(I)V"));
+ Assert.assertEquals("m(II)V", cm.getOriginalMethodSignature("newM2(II)V"));
+
+ // Check method name and parameters are restored
+ Assert.assertEquals("m(Lcom/Foo;)V", cm.getOriginalMethodSignature("newM3(Lcom/A;)V"));
+ Assert.assertEquals("m([Lcom/Foo;)V", cm.getOriginalMethodSignature("newM4([Lcom/A;)V"));
+ }
+
+ /**
+ * Generate a list of all possible strings when the given {@code strings} are separated or not by
+ * a space character (including leading and trailing space).
+ */
+ private static List<String> generateStringWithSpaces(String... strings) {
+ int spacesPosCount = strings.length + 1;
+ int spacesCombinationsCount = 1 << spacesPosCount;
+ List<String> list = new ArrayList<String>(spacesCombinationsCount);
+
+ for (int i = 0; i < spacesCombinationsCount; ++i) {
+ StringBuilder sb = new StringBuilder();
+ int j = 0;
+ for (; j < strings.length; ++j) {
+ String s = strings[j];
+ if (isBitSet(i, j)) {
+ sb.append(' ');
+ }
+ sb.append(s);
+ }
+ assert j == strings.length;
+ // End space
+ if (isBitSet(i, j)) {
+ sb.append(' ');
+ }
+ list.add(sb.toString());
+ }
+ return list;
+ }
+
+ private static boolean isBitSet(int number, int index) {
+ return (number & (1 << index)) != 0;
+ }
+
+ @Test
+ public void testGenerateSpaces() {
+ List<String> strings = generateStringWithSpaces("str");
+ Assert.assertNotNull(strings);
+ Assert.assertEquals(4, strings.size());
+ Assert.assertTrue(strings.contains("str"));
+ Assert.assertTrue(strings.contains(" str"));
+ Assert.assertTrue(strings.contains("str "));
+ Assert.assertTrue(strings.contains(" str "));
+ }
+
+ static MappingFileLoader loadMappingFile(@Nonnull String... lines) throws IOException {
+ byte[] buffer = buildBuffer(lines);
+ MappingFileLoader loader = new MappingFileLoader();
+ InputStream input = new ByteArrayInputStream(buffer);
+ try {
+ loader.load(input);
+ } finally {
+ input.close();
+ }
+ return loader;
+ }
+
+ private static byte[] buildBuffer(@Nonnull String... lines) throws IOException {
+ byte[] result;
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ try {
+ PrintWriter pw = new PrintWriter(baos);
+ for (String line : lines) {
+ pw.println(line);
+ }
+ pw.flush();
+ result = baos.toByteArray();
+ } finally {
+ baos.close();
+ }
+ return result;
+ }
+}
