JSUnit

// Asserts that two values are equal. AssertionFailedError is thrown if the actual value does not match the regular expression.
jsunit.assertEquals("Solution name test", "someSolution", application.getSolutionName());
jsunit.assertEquals("Simple math test", 2, 1 + 1);

// Asserts that a condition is false. AssertionFailedError is thrown if the evaluation was not false.
jsunit.assertFalse("False test", application.isLastPrintPreviewPrinted());

// Asserts that two floating point values are equal to within a given tolerance. AssertionFailedError is thrown if the expected value is not within the tolerance of the actual one.
jsunit.assertFloatEquals("Float equals test", 3.12, 3.121, 0.0015);

// Asserts that a regular expression matches a string. AssertionFailedError is thrown if the expected value is not the actual one.
jsunit.assertMatches("Match test", new RegExp("gr(a|e)y"), "gray");

// Asserts that an object is not null. AssertionFailedError is thrown if the object is not null.
var a; // this is undefined, not null
jsunit.assertNotNull("Not null test", a);

// Asserts that two values are not the same. AssertionFailedError is thrown if the expected value is the actual one.
var a = new Date(1990, 1, 1);
var b = new Date(1990, 1, 1);
jsunit.assertNotSame("Not same test", a, b);
jsunit.assertEquals("But equals", a, b);

// Asserts that an object is not undefined. AssertionFailedError is thrown if the object is undefined.
var a = 0;
jsunit.assertNotUndefined("Not undefined test", a);

// Asserts that an object is null. AssertionFailedError is thrown if the object is not null.
jsunit.assertNull("Null test", null);

// Asserts that two values are the same. AssertionFailedError is thrown if the expected value is not the actual one.
var a = new Date(1990, 1, 1);
var b = a;
jsunit.assertSame("Same test", a, b);

// Asserts that a condition is true. AssertionFailedError is thrown if the evaluation was not true.
jsunit.assertTrue("True test", application.isLastPrintPreviewPrinted());

// Asserts that an object is undefined. AssertionFailedError is thrown if the object is defined.
jsunit.assertUndefined("Undefined test", thisIsUndefined);

// Fails a test. AssertionFailedError is always thrown.
jsunit.fail("Fail test");
jsunit.fail("test", null, "Fail"); // 2nd param is not used in Servoy, params 3 and 1 get merged to form a message. The result is the same as in the line above.