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Java By Comparison
book

Java By Comparison

by Simon Harrer, Linus Dietz, Jörg Lenhard
March 2018
Intermediate to advanced
208 pages
4h 52m
English
Pragmatic Bookshelf
Content preview from Java By Comparison

Use Meaningful Assertions

 class​ CruiseControlTest {
 
  @Test
 void​ setPlanetarySpeedIs7667() {
  CruiseControl cruiseControl = ​new​ CruiseControl();
 
  cruiseControl.setPreset(SpeedPreset.PLANETARY_SPEED);
 
» Assertions.assertTrue(7667 == cruiseControl.getTargetSpeedKmh());
  }
 }

The most basic assertion you can find in JUnit is assertTrue(). In the end, everything boils down to a Boolean value, whether a condition holds or doesn’t. Interpreting Boolean expressions is no problem at all for Java, but you can make the life of your fellow developer a lot easier by writing assertions in a way that’s more accessible. And you won’t usually do this with assertTrue().

Take a look at the code above. The assertion checks that the value of

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Publisher Resources

ISBN: 9781680505887Errata Page