title: AssertEquals(String, String) ComparisonFailure when contents are identical
body: <p>I'm facing the following scenario:</p>
  
  <p>I have an app that spits everything out to the STDOUT (simple company test) and I'm trying to JUnit this.</p>
  
  <p>My problem is, when I run the application, it returns me in the Console:
  (copy and pasted from IntelliJ)</p>
  
  <pre><code>Id 1234 nao encontrado
  123, R$ 441,00
  321, R$ -8490,00
  255, R$ 884,00
  </code></pre>
  
  <p>Print:</p>
  
  <p><a href="https://i.stack.imgur.com/WUOsU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/WUOsU.png" alt="enter image description here"></a></p>
  
  <p>And my test is:</p>
  
  <pre><code>assertEquals(outContent.toString().trim(),"Id 1234 nao encontrado\n" +
                  "123, R$ 441,00\n" +
                  "321, R$ -8490,00\n" +
                  "255, R$ 884,00");
  </code></pre>
  
  <p>I'm getting:</p>
  
  <pre><code>junit.framework.ComparisonFailure:  &lt;Click to see difference&gt;
  
  
      at junit.framework.Assert.assertEquals(Assert.java:100)
      at junit.framework.Assert.assertEquals(Assert.java:107)
      at junit.framework.TestCase.assertEquals(TestCase.java:269)
      at com.company.AccountManagerTest.testPrintAccountsBalance(AccountManagerTest.java:85)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:497)
      at junit.framework.TestCase.runTest(TestCase.java:176)
      at junit.framework.TestCase.runBare(TestCase.java:141)
      at junit.framework.TestResult$1.protect(TestResult.java:122)
      at junit.framework.TestResult.runProtected(TestResult.java:142)
      at junit.framework.TestResult.run(TestResult.java:125)
      at junit.framework.TestCase.run(TestCase.java:129)
      at junit.framework.TestSuite.runTest(TestSuite.java:252)
      at junit.framework.TestSuite.run(TestSuite.java:247)
      at org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:86)
      at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
      at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:69)
      at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:234)
      at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:74)
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:497)
      at com.intellij.rt.execution.application.AppMain.main(AppMain.java:144)
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/zvBO2.png" rel="noreferrer"><img src="https://i.stack.imgur.com/zvBO2.png" alt="enter image description here"></a></p>
  
  <p>So, what I am doing wrong here ?</p>
  
  <p>Testing with JUnit4 and assertJ 2.4.0</p>