test

interpreter_tests.java

	@Test
	public void testMultiDigits() {
		testResult("123", new Double(123));
	}
	
	@Test
	public void testFractionalDecimal() {
		testResult("123.456", new Double(123.456));
	}
	
	@Test
	public void testAssignment1a() {
		testResult("x=7", new Double(7));
	}
	
	@Test
	public void testAssignment1b() {
		testResult("x = 7", new Double(7));
	}
	
	@Test
	public void testVarNames() {
		testResult("xyz=10", new Double(10));
		testResult("hallo_ichbineine_123456789UltralangeVARIABLE = 10" +
				"hallo_ichbineine_123456789UltralangeVARIABLE *= 1.5", new Double(15));
	}
	
	@Test
	public void testAssignment2() {
		testResult("x=5*2*3/15", new Double(2));
	}
	
	@Test
	public void testAssignment3() {
		testResult("x = 5 + 2 + 10", new Double(17));
	}
	
	@Test
	public void whiteSpaceTest1() {
		testResult("3 * 3", new Double(9));
	}
	@Test
	public void whiteSpaceTest2() {
		testResult(" ( 3 * 3 ) ", new Double(9));
	}
	
	@Test
	public void testAssignment4() {
		testResult("x = (3 * 3)", new Double(9));
	}
	
	@Test
	public void testAssignment5() {
		testResult("x = (3 * 3) x = x * 2", new Double(18));
	}
	
	@Test
	public void testAssignment6() {
		testResult("x = (3 * 3) x = x * 2 y = x+2", new Double(20));
	}
	
	@Test
	public void testAssignment7() {
		testResult("x = 3  * 3 y = x * z", new Double(0));
	}
	
	@Test
	public void testAssignmentEquals1() {
		testResult("x = 2 x *= 3", new Double(6));
	}
	
	@Test
	public void testAssignmentEquals2() {
		testResult("x=2x*=2+2*4", new Double(20));
	}
	
	@Test
	public void testAssignmentEquals3() {
		testResult("x = 2 x *= 5 y = x * 3", new Double(30));
	}
	
	@Test
	public void testAssignmentEquals4() {
		testResult("x = 10 x+= 3", new Double(13));
	}
	
	@Test
	public void testBla1() {
		testResult("x=5 x*=5 x", new Double(25));
	}
	
	@Test
	public void testBla2() {
		testResult("x=16 y=2 x/4*y", new Double(8));
	}
	
	@Test
	public void testUndefinedVars() {
		testResult("x", new Double(0));
		testResult("x *= 4", new Double(4));
		testResult("x += 1", new Double(1));
	}

	public void testResult(String string, Double expected) {
		Double d = Interpreter.eval(string);
		Assert.assertEquals(expected, d);
	}