Java JUnit brief note

Test class method description

Prerequisite class

public class TestMethods {

/**

• Blank check

  • @param value

• @return With or without blank

  • */ static public boolean isBlank(String value) { if (value == null || value.length() == 0) { return true; } return false; }

  /**

• int value check

  • @param value

• String

• @return int With or without value judgment

  • */ static public boolean isInt(String value) { if (isBlank(value)) { return false; } try { Integer.parseInt(value); } catch (NumberFormatException e) { return false; } return true; } }

setUpBeforeClass A method that is executed before the first test method of this test class is called tearDownAfterClass Method executed after the last test method of this test class is called setUp Methods executed before each test method is called tearDown

Methods of the org.junit.Assert class

assertArrayEquaals If the expected value and the actual value are equal, the process ends normally. If they are not equal, it ends in failure asertEquals If the expected value and the actual value are equal, the process ends normally. Failure if not equal assertFalse If the actual value is false, the process ends normally. If true, it ends in failure assertNotNull If the actual value is not null, it ends normally. Fails if null assertNotSame If the expected value and the actual value do not have the same reference, the process ends normally. If the same reference is made, it ends in failure assertNull If the actual value is null, it ends normally. Fails if not null assertSame If the expected value and the actual value have the same reference, the process ends normally. If you do not make the same reference, it will end in failure assertTrue If the actual value is true, the process ends normally. If false, it ends in failure fail Fails when this method is executed Method executed after each test method is called testIsBlank Test method for isBlank method of the class under test testIsInt Test method for isInt method of the class under test