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  1. ValidationTestHelper.assertNoErrors() has thrown an AssertionError
  2. JUnit test assertion failed

Your stack trace compared to the selected pattern

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java.lang.AssertionError: Expected no errors, but got :ERROR (null) '++can only be applied to variable references' on WPostfixOperation, offset 43, length 4
    at org.eclipse.xtext.junit4.validation.ValidationTestHelper.assertNoErrors(
    at org.eclipse.xtext.junit4.validation.ValidationTestHelper.assertNoErrors(
    at org.uqbar.project.wollok.tests.interpreter.AbstractWollokInterpreterTestCase.lambda$6(


chinthana10 months ago

AssertionError is thrown when using JUnit's internal assertions methods compare two different values and those are not equal. Also, the developer can invoke the method when the test logic fails.

The simplest code to reproduce the error is the following:

import static;

public class FailTest { 

   public void shouldAssertFail() { 
      if( ... ) {
         fail("Any message");

Mind the static import. The fail is part of the JUnit API.

Your best course of action is to use the debugger to see why the test is failing and what is the condition that is not being met.

External results for this pattern (10)

  1. cdjacksonvia GitHub17 hours ago
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  2. jenstroegervia GitHub17 hours ago
    The warning results do not match expected:<[MessageId.PKG_012, MessageId.OPF_061, MessageId.OPF_003, MessageId.PKG_012]> but was:<[MessageId.OPF_003, MessageId.PKG_012, MessageId.OPF_061, MessageId.PKG_012]>
    Show stack trace
  3. BO41via GitHub19 hours ago
    expected:<0> but was:<2>
    Show stack trace
  4. hhh0505via GitHub20 hours ago
    expected:<Sun Jan 01 05:00:00 EST 2017> but was:<Sun Jan 01 10:00:00 EST 2017>
    Show stack trace
  5. ejona86via GitHub22 hours ago
  6. ejona86via GitHub22 hours ago
    Window was 131070 expecting 314570
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  7. ejona86via GitHub22 hours ago
    expected:<0> but was:<1>
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  8. fenik17via GitHub23 hours ago
    expected:<true> but was:<false>
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  9. hidekivia GitHub23 hours ago
    expected:<2> but was:<1>
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  10. hidekivia GitHub23 hours ago
    expected null, but was:<CouchbaseLiteException{domain=1, code=19, msg=null}>
    Show stack trace