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author | David Srbecky <dsrbecky@google.com> | 2021-02-24 15:52:50 +0000 |
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committer | David Srbecky <dsrbecky@google.com> | 2021-02-24 15:52:50 +0000 |
commit | 08a6d4b74555db6d01048fc7065eb1e2bfaf33bc (patch) | |
tree | 81124de095a6b4a53b223d0f70cadde9744ee44a /src/main/java/org/junit/internal/Throwables.java | |
parent | 6a658e7a4df0cc8ea6465da46fcf1a823cb0d491 (diff) | |
download | junit-08a6d4b74555db6d01048fc7065eb1e2bfaf33bc.tar.gz |
Revert "Upgrade external/junit to 4.13.2"
Revert submission 1601635
Reason for revert: b/181123058
Reverted Changes:
I8f5cd1266:Remove support for stuck threads
Ifdb59336d:Remove DisableOnDebug (new in 4.12) as it is not s...
I6abae5aed:Extra generic type information to aid certain java...
I5ec909df6:Upgrade external/junit to 4.13.2
Change-Id: Idaddfc2039816a8d7b12c91fdd540b801ab854ff
Diffstat (limited to 'src/main/java/org/junit/internal/Throwables.java')
-rw-r--r-- | src/main/java/org/junit/internal/Throwables.java | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/src/main/java/org/junit/internal/Throwables.java b/src/main/java/org/junit/internal/Throwables.java index 3f0f7a3..86dceef 100644 --- a/src/main/java/org/junit/internal/Throwables.java +++ b/src/main/java/org/junit/internal/Throwables.java @@ -1,17 +1,5 @@ package org.junit.internal; -import java.io.BufferedReader; -import java.io.IOException; -import java.io.PrintWriter; -import java.io.StringReader; -import java.io.StringWriter; -import java.lang.reflect.Method; -import java.util.AbstractList; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Collections; -import java.util.List; - /** * Miscellaneous functions dealing with {@code Throwable}. * @@ -51,223 +39,4 @@ public final class Throwables { private static <T extends Throwable> void rethrow(Throwable e) throws T { throw (T) e; } - - /** - * Returns the stacktrace of the given Throwable as a String. - * - * @since 4.13 - */ - public static String getStacktrace(Throwable exception) { - StringWriter stringWriter = new StringWriter(); - PrintWriter writer = new PrintWriter(stringWriter); - exception.printStackTrace(writer); - return stringWriter.toString(); - } - - /** - * Gets a trimmed version of the stack trace of the given exception. Stack trace - * elements that are below the test method are filtered out. - * - * @return a trimmed stack trace, or the original trace if trimming wasn't possible - */ - public static String getTrimmedStackTrace(Throwable exception) { - List<String> trimmedStackTraceLines = getTrimmedStackTraceLines(exception); - if (trimmedStackTraceLines.isEmpty()) { - return getFullStackTrace(exception); - } - - StringBuilder result = new StringBuilder(exception.toString()); - appendStackTraceLines(trimmedStackTraceLines, result); - appendStackTraceLines(getCauseStackTraceLines(exception), result); - return result.toString(); - } - - private static List<String> getTrimmedStackTraceLines(Throwable exception) { - List<StackTraceElement> stackTraceElements = Arrays.asList(exception.getStackTrace()); - int linesToInclude = stackTraceElements.size(); - - State state = State.PROCESSING_OTHER_CODE; - for (StackTraceElement stackTraceElement : asReversedList(stackTraceElements)) { - state = state.processStackTraceElement(stackTraceElement); - if (state == State.DONE) { - List<String> trimmedLines = new ArrayList<String>(linesToInclude + 2); - trimmedLines.add(""); - for (StackTraceElement each : stackTraceElements.subList(0, linesToInclude)) { - trimmedLines.add("\tat " + each); - } - if (exception.getCause() != null) { - trimmedLines.add("\t... " + (stackTraceElements.size() - trimmedLines.size()) + " trimmed"); - } - return trimmedLines; - } - linesToInclude--; - } - return Collections.emptyList(); - } - - private static final Method getSuppressed = initGetSuppressed(); - - private static Method initGetSuppressed() { - try { - return Throwable.class.getMethod("getSuppressed"); - } catch (Throwable e) { - return null; - } - } - - private static boolean hasSuppressed(Throwable exception) { - if (getSuppressed == null) { - return false; - } - try { - Throwable[] suppressed = (Throwable[]) getSuppressed.invoke(exception); - return suppressed.length != 0; - } catch (Throwable e) { - return false; - } - } - - private static List<String> getCauseStackTraceLines(Throwable exception) { - if (exception.getCause() != null || hasSuppressed(exception)) { - String fullTrace = getFullStackTrace(exception); - BufferedReader reader = new BufferedReader( - new StringReader(fullTrace.substring(exception.toString().length()))); - List<String> causedByLines = new ArrayList<String>(); - - try { - String line; - while ((line = reader.readLine()) != null) { - if (line.startsWith("Caused by: ") || line.trim().startsWith("Suppressed: ")) { - causedByLines.add(line); - while ((line = reader.readLine()) != null) { - causedByLines.add(line); - } - return causedByLines; - } - } - } catch (IOException e) { - // We should never get here, because we are reading from a StringReader - } - } - - return Collections.emptyList(); - } - - private static String getFullStackTrace(Throwable exception) { - StringWriter stringWriter = new StringWriter(); - PrintWriter writer = new PrintWriter(stringWriter); - exception.printStackTrace(writer); - return stringWriter.toString(); - } - - private static void appendStackTraceLines( - List<String> stackTraceLines, StringBuilder destBuilder) { - for (String stackTraceLine : stackTraceLines) { - destBuilder.append(String.format("%s%n", stackTraceLine)); - } - } - - private static <T> List<T> asReversedList(final List<T> list) { - return new AbstractList<T>() { - - @Override - public T get(int index) { - return list.get(list.size() - index - 1); - } - - @Override - public int size() { - return list.size(); - } - }; - } - - private enum State { - PROCESSING_OTHER_CODE { - @Override public State processLine(String methodName) { - if (isTestFrameworkMethod(methodName)) { - return PROCESSING_TEST_FRAMEWORK_CODE; - } - return this; - } - }, - PROCESSING_TEST_FRAMEWORK_CODE { - @Override public State processLine(String methodName) { - if (isReflectionMethod(methodName)) { - return PROCESSING_REFLECTION_CODE; - } else if (isTestFrameworkMethod(methodName)) { - return this; - } - return PROCESSING_OTHER_CODE; - } - }, - PROCESSING_REFLECTION_CODE { - @Override public State processLine(String methodName) { - if (isReflectionMethod(methodName)) { - return this; - } else if (isTestFrameworkMethod(methodName)) { - // This is here to handle TestCase.runBare() calling TestCase.runTest(). - return PROCESSING_TEST_FRAMEWORK_CODE; - } - return DONE; - } - }, - DONE { - @Override public State processLine(String methodName) { - return this; - } - }; - - /** Processes a stack trace element method name, possibly moving to a new state. */ - protected abstract State processLine(String methodName); - - /** Processes a stack trace element, possibly moving to a new state. */ - public final State processStackTraceElement(StackTraceElement element) { - return processLine(element.getClassName() + "." + element.getMethodName() + "()"); - } - } - - private static final String[] TEST_FRAMEWORK_METHOD_NAME_PREFIXES = { - "org.junit.runner.", - "org.junit.runners.", - "org.junit.experimental.runners.", - "org.junit.internal.", - "junit.extensions", - "junit.framework", - "junit.runner", - "junit.textui", - }; - - private static final String[] TEST_FRAMEWORK_TEST_METHOD_NAME_PREFIXES = { - "org.junit.internal.StackTracesTest", - }; - - private static boolean isTestFrameworkMethod(String methodName) { - return isMatchingMethod(methodName, TEST_FRAMEWORK_METHOD_NAME_PREFIXES) && - !isMatchingMethod(methodName, TEST_FRAMEWORK_TEST_METHOD_NAME_PREFIXES); - } - - private static final String[] REFLECTION_METHOD_NAME_PREFIXES = { - "sun.reflect.", - "java.lang.reflect.", - "jdk.internal.reflect.", - "org.junit.rules.RunRules.<init>(", - "org.junit.rules.RunRules.applyAll(", // calls TestRules - "org.junit.runners.RuleContainer.apply(", // calls MethodRules & TestRules - "junit.framework.TestCase.runBare(", // runBare() directly calls setUp() and tearDown() - }; - - private static boolean isReflectionMethod(String methodName) { - return isMatchingMethod(methodName, REFLECTION_METHOD_NAME_PREFIXES); - } - - private static boolean isMatchingMethod(String methodName, String[] methodNamePrefixes) { - for (String methodNamePrefix : methodNamePrefixes) { - if (methodName.startsWith(methodNamePrefix)) { - return true; - } - } - - return false; - } } |