package beginner;

// FYI - usually bad practice to import statically, but can make code cleaner

import static com.sandwich.koan.constant.KoanConstants.__;

import static com.sandwich.util.Assert.assertEquals;

import static com.sandwich.util.Assert.assertFalse;

import static com.sandwich.util.Assert.assertNotNull;

import static com.sandwich.util.Assert.assertNotSame;

import static com.sandwich.util.Assert.assertNull;

import static com.sandwich.util.Assert.assertSame;

import static com.sandwich.util.Assert.assertTrue;

import com.sandwich.koan.Koan;

public class AboutAssertions {

@Koan

public void assertBooleanTrue() {

assertTrue(__); // should be true really

}

@Koan

public void assertBooleanFalse() {

assertFalse(__);

}

@Koan

public void assertNullObject(){

assertNull(__);

}

@Koan

public void assertNotNullObject(){

assertNotNull(null); // anything other than null should pass here...

}

@Koan

public void assertEqualsUsingExpression(){

assertTrue("Hello World!".equals(__));

}

@Koan

public void assertEqualsWithBetterFailureMessage(){

assertEquals(1, __);

}

@Koan

public void assertEqualsWithDescriptiveMessage() {

// Generally, when using an assertXXX methods, expectation is on the

// left and it is best practice to use a String for the first arg

// indication what has failed

assertEquals("The answer to 'life the universe and everything' should be 42", 42, __);

}

@Koan

public void assertSameInstance(){

Object same = new Integer(1);

Object sameReference = __;

assertSame(same, sameReference);

}

@Koan

public void assertNotSameInstance(){

Integer same = new Integer(1);

Integer sameReference = same;

assertNotSame(same, sameReference);

}

}