Package org.assertj.core.util
Class Throwables
- java.lang.Object
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- org.assertj.core.util.Throwables
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public final class Throwables extends java.lang.Object
Utility methods related to
s.Throwable
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Field Summary
Fields Modifier and Type Field Description private static java.util.function.Function<java.lang.Throwable,java.lang.String>
ERROR_DESCRIPTION_EXTRACTOR
private static java.lang.String
JAVA_LANG_REFLECT_CONSTRUCTOR
private static java.lang.String
ORG_ASSERTJ
private static java.lang.String
ORG_ASSERTJ_CORE_ERROR_CONSTRUCTOR_INVOKER
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Constructor Summary
Constructors Modifier Constructor Description private
Throwables()
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description private static <T extends java.lang.Throwable>
TaddLineNumberToErrorMessage(T error)
static <T extends java.lang.Throwable>
java.util.List<T>addLineNumberToErrorMessages(java.util.List<? extends T> errors)
static void
appendStackTraceInCurrentThreadToThrowable(java.lang.Throwable t, java.lang.String methodToStartFrom)
Appends the stack trace of the current thread to the one in the given
.Throwable
private static <T extends java.lang.Throwable>
TbuildAssertionErrorWithLineNumbersButNoActualOrExpectedValues(T error, java.lang.StackTraceElement testStackTraceElement)
private static java.lang.String
buildErrorMessageWithLineNumber(java.lang.String originalErrorMessage, java.lang.StackTraceElement testStackTraceElement)
private static <T extends java.lang.Throwable>
TbuildOpentest4jAssertionFailedErrorWithLineNumbers(T error, java.lang.StackTraceElement testStackTraceElement)
private static <T extends java.lang.Throwable>
TcreateNewInstanceWithLineNumberInErrorMessage(T error, java.lang.StackTraceElement testStackTraceElement)
static java.util.List<java.lang.String>
describeErrors(java.util.List<? extends java.lang.Throwable> errors)
static java.lang.StackTraceElement
getFirstStackTraceElementFromTest(java.lang.StackTraceElement[] stacktrace)
static java.lang.Throwable
getRootCause(java.lang.Throwable throwable)
Get the root cause (ie the last non null cause) from aThrowable
.static java.lang.String
getStackTrace(java.lang.Throwable throwable)
Get the stack trace from aThrowable
as aString
.private static boolean
isInstanceOf(java.lang.Object object, java.lang.String className)
private static <T extends java.lang.Throwable>
booleanisOpentest4jAssertionFailedError(T error)
private static boolean
isProxiedAssertionClass(java.lang.String className)
static void
removeAssertJRelatedElementsFromStackTrace(java.lang.Throwable throwable)
Removes the AssertJ-related elements from the
stack trace that have little value for end user.Throwable
private static java.lang.String
simpleClassNameOf(java.lang.StackTraceElement testStackTraceElement)
private static java.util.List<java.lang.StackTraceElement>
stackTraceInCurrentThread()
private static java.util.List<java.lang.StackTraceElement>
stackTraceInCurrentThread(java.lang.String methodToStartFrom)
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Field Detail
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ORG_ASSERTJ_CORE_ERROR_CONSTRUCTOR_INVOKER
private static final java.lang.String ORG_ASSERTJ_CORE_ERROR_CONSTRUCTOR_INVOKER
- See Also:
- Constant Field Values
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JAVA_LANG_REFLECT_CONSTRUCTOR
private static final java.lang.String JAVA_LANG_REFLECT_CONSTRUCTOR
- See Also:
- Constant Field Values
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ORG_ASSERTJ
private static final java.lang.String ORG_ASSERTJ
- See Also:
- Constant Field Values
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ERROR_DESCRIPTION_EXTRACTOR
private static final java.util.function.Function<java.lang.Throwable,java.lang.String> ERROR_DESCRIPTION_EXTRACTOR
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Method Detail
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describeErrors
public static java.util.List<java.lang.String> describeErrors(java.util.List<? extends java.lang.Throwable> errors)
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appendStackTraceInCurrentThreadToThrowable
public static void appendStackTraceInCurrentThreadToThrowable(java.lang.Throwable t, java.lang.String methodToStartFrom)
Appends the stack trace of the current thread to the one in the given
.Throwable
- Parameters:
t
- the givenThrowable
.methodToStartFrom
- the name of the method used as the starting point of the current thread's stack trace.
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stackTraceInCurrentThread
private static java.util.List<java.lang.StackTraceElement> stackTraceInCurrentThread(java.lang.String methodToStartFrom)
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stackTraceInCurrentThread
private static java.util.List<java.lang.StackTraceElement> stackTraceInCurrentThread()
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removeAssertJRelatedElementsFromStackTrace
public static void removeAssertJRelatedElementsFromStackTrace(java.lang.Throwable throwable)
Removes the AssertJ-related elements from the
stack trace that have little value for end user. Therefore, instead of seeing this:Throwable
We get this:org.junit.ComparisonFailure: expected:<'[Ronaldo]'> but was:<'[Messi]'> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:501) at org.assertj.core.error.ConstructorInvoker.newInstance(ConstructorInvoker.java:34) at org.assertj.core.error.ShouldBeEqual.newComparisonFailure(ShouldBeEqual.java:111) at org.assertj.core.error.ShouldBeEqual.comparisonFailure(ShouldBeEqual.java:103) at org.assertj.core.error.ShouldBeEqual.newAssertionError(ShouldBeEqual.java:81) at org.assertj.core.internal.Failures.failure(Failures.java:76) at org.assertj.core.internal.Objects.assertEqual(Objects.java:116) at org.assertj.core.api.AbstractAssert.isEqualTo(AbstractAssert.java:74) at examples.StackTraceFilterExample.main(StackTraceFilterExample.java:13)
org.junit.ComparisonFailure: expected:<'[Ronaldo]'> but was:<'[Messi]'> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) at examples.StackTraceFilterExample.main(StackTraceFilterExample.java:20)
- Parameters:
throwable
- theThrowable
to filter stack trace.
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getRootCause
public static java.lang.Throwable getRootCause(java.lang.Throwable throwable)
Get the root cause (ie the last non null cause) from aThrowable
.- Parameters:
throwable
- theThrowable
to get root cause from.- Returns:
- the root cause if any, else
null
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getStackTrace
public static java.lang.String getStackTrace(java.lang.Throwable throwable)
Get the stack trace from aThrowable
as aString
.The result of this method vary by JDK version as this method uses
Throwable.printStackTrace(java.io.PrintWriter)
. On JDK1.3 and earlier, the cause exception will not be shown unless the specified throwable alters printStackTrace.- Parameters:
throwable
- theThrowable
to get stack trace from.- Returns:
- the stack trace as a
String
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addLineNumberToErrorMessages
public static <T extends java.lang.Throwable> java.util.List<T> addLineNumberToErrorMessages(java.util.List<? extends T> errors)
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getFirstStackTraceElementFromTest
public static java.lang.StackTraceElement getFirstStackTraceElementFromTest(java.lang.StackTraceElement[] stacktrace)
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isProxiedAssertionClass
private static boolean isProxiedAssertionClass(java.lang.String className)
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addLineNumberToErrorMessage
private static <T extends java.lang.Throwable> T addLineNumberToErrorMessage(T error)
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createNewInstanceWithLineNumberInErrorMessage
private static <T extends java.lang.Throwable> T createNewInstanceWithLineNumberInErrorMessage(T error, java.lang.StackTraceElement testStackTraceElement) throws java.lang.ReflectiveOperationException
- Throws:
java.lang.ReflectiveOperationException
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isOpentest4jAssertionFailedError
private static <T extends java.lang.Throwable> boolean isOpentest4jAssertionFailedError(T error)
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isInstanceOf
private static boolean isInstanceOf(java.lang.Object object, java.lang.String className)
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buildAssertionErrorWithLineNumbersButNoActualOrExpectedValues
private static <T extends java.lang.Throwable> T buildAssertionErrorWithLineNumbersButNoActualOrExpectedValues(T error, java.lang.StackTraceElement testStackTraceElement) throws java.lang.ReflectiveOperationException
- Throws:
java.lang.ReflectiveOperationException
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buildOpentest4jAssertionFailedErrorWithLineNumbers
private static <T extends java.lang.Throwable> T buildOpentest4jAssertionFailedErrorWithLineNumbers(T error, java.lang.StackTraceElement testStackTraceElement) throws java.lang.ReflectiveOperationException
- Throws:
java.lang.ReflectiveOperationException
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buildErrorMessageWithLineNumber
private static java.lang.String buildErrorMessageWithLineNumber(java.lang.String originalErrorMessage, java.lang.StackTraceElement testStackTraceElement)
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simpleClassNameOf
private static java.lang.String simpleClassNameOf(java.lang.StackTraceElement testStackTraceElement)
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