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From TheRealHaui <...@git.apache.org>
Subject [GitHub] commons-imaging pull request #27: Increase code coverage one
Date Mon, 17 Jul 2017 22:37:14 GMT
Github user TheRealHaui commented on a diff in the pull request:

    https://github.com/apache/commons-imaging/pull/27#discussion_r127843760
  
    --- Diff: src/test/java/org/apache/commons/imaging/formats/tiff/fieldtypes/FieldTypeByteTest.java
---
    @@ -0,0 +1,37 @@
    +package org.apache.commons.imaging.formats.tiff.fieldtypes;
    +
    +import org.junit.Test;
    +
    +import java.nio.ByteOrder;
    +
    +import static org.junit.Assert.assertEquals;
    +import static org.junit.Assert.fail;
    +
    +/**
    + * Unit tests for class {@link FieldTypeByte}.
    + *
    + * @date 13.07.2017
    + * @see FieldTypeByte
    + *
    + **/
    +public class FieldTypeByteTest{
    +
    +
    +  @Test
    +  public void testWriteDataWithNull() {
    +
    +      FieldTypeByte fieldTypeByte = FieldType.UNDEFINED;
    +      ByteOrder byteOrder = ByteOrder.BIG_ENDIAN;
    +
    +      try { 
    +        fieldTypeByte.writeData( null, byteOrder);
    +        fail("Expecting exception: Exception");
    +      } catch(Exception e) {
    +         assertEquals("Invalid data: null (null)",e.getMessage());
    +         assertEquals(FieldTypeByte.class.getName(), e.getStackTrace()[0].getClassName());
    --- End diff --
    
    No, you're not right!
    Obviously, became already dizzy ...
    
    The difference is that the approach with the stack trace - of course - verifies which
class the exception originated from.
    The verification which exception was thrown and before more over if an exception was thrown
gets already verified in the catch clause.


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