Package org.assertj.core.util
Class Throwables
java.lang.Object
org.assertj.core.util.Throwables
Utility methods related to
Throwable
s.-
Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprivate static <T extends Throwable>
TaddLineNumberToErrorMessage
(T error) addLineNumberToErrorMessages
(List<? extends T> errors) static void
appendStackTraceInCurrentThreadToThrowable
(Throwable t, String methodToStartFrom) Appends the stack trace of the current thread to the one in the given
.Throwable
private static <T extends Throwable>
TbuildAssertionErrorWithLineNumbersButNoActualOrExpectedValues
(T error, StackTraceElement testStackTraceElement) private static String
buildErrorMessageWithLineNumber
(String originalErrorMessage, StackTraceElement testStackTraceElement) private static <T extends Throwable>
TbuildOpentest4jAssertionFailedErrorWithLineNumbers
(T error, StackTraceElement testStackTraceElement) private static <T extends Throwable>
TcreateNewInstanceWithLineNumberInErrorMessage
(T error, StackTraceElement testStackTraceElement) describeErrors
(List<? extends Throwable> errors) static StackTraceElement
getFirstStackTraceElementFromTest
(StackTraceElement[] stacktrace) static Throwable
getRootCause
(Throwable throwable) Get the root cause (ie the last non null cause) from aThrowable
.static String
getStackTrace
(Throwable throwable) private static boolean
isInstanceOf
(Object object, String className) private static <T extends Throwable>
booleanisOpentest4jAssertionFailedError
(T error) private static boolean
isProxiedAssertionClass
(String className) static void
Removes the AssertJ-related elements from the
stack trace that have little value for end user.Throwable
private static String
simpleClassNameOf
(StackTraceElement testStackTraceElement) private static List
<StackTraceElement> private static List
<StackTraceElement> stackTraceInCurrentThread
(String methodToStartFrom)
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Field Details
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ORG_ASSERTJ_CORE_ERROR_CONSTRUCTOR_INVOKER
- See Also:
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JAVA_LANG_REFLECT_CONSTRUCTOR
- See Also:
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ORG_ASSERTJ
- See Also:
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ERROR_DESCRIPTION_EXTRACTOR
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Constructor Details
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Throwables
private Throwables()
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Method Details
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describeErrors
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appendStackTraceInCurrentThreadToThrowable
public static void appendStackTraceInCurrentThreadToThrowable(Throwable t, 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
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stackTraceInCurrentThread
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removeAssertJRelatedElementsFromStackTrace
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
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
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
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getFirstStackTraceElementFromTest
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isProxiedAssertionClass
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addLineNumberToErrorMessage
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createNewInstanceWithLineNumberInErrorMessage
private static <T extends Throwable> T createNewInstanceWithLineNumberInErrorMessage(T error, StackTraceElement testStackTraceElement) throws ReflectiveOperationException - Throws:
ReflectiveOperationException
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isOpentest4jAssertionFailedError
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isInstanceOf
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buildAssertionErrorWithLineNumbersButNoActualOrExpectedValues
private static <T extends Throwable> T buildAssertionErrorWithLineNumbersButNoActualOrExpectedValues(T error, StackTraceElement testStackTraceElement) throws ReflectiveOperationException - Throws:
ReflectiveOperationException
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buildOpentest4jAssertionFailedErrorWithLineNumbers
private static <T extends Throwable> T buildOpentest4jAssertionFailedErrorWithLineNumbers(T error, StackTraceElement testStackTraceElement) throws ReflectiveOperationException - Throws:
ReflectiveOperationException
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buildErrorMessageWithLineNumber
private static String buildErrorMessageWithLineNumber(String originalErrorMessage, StackTraceElement testStackTraceElement) -
simpleClassNameOf
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