53 lines
1.2 KiB
Java
53 lines
1.2 KiB
Java
package function.builtin.math;
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import static testutil.TestUtilities.*;
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import org.junit.Test;
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import function.ArgumentValidator.BadArgumentTypeException;
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import sexpression.LispNumber;
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public class MULTIPLYTest {
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@Test
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public void multiplyWithNoArguments() {
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String input = "(*)";
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assertSExpressionsMatch(new LispNumber("1"), evaluateString(input));
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}
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@Test
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public void multiplyWithOneNumber() {
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String input = "(* 8)";
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assertSExpressionsMatch(new LispNumber("8"), evaluateString(input));
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}
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@Test
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public void multiplyWithTwoNumbers() {
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String input = "(* 5 3)";
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assertSExpressionsMatch(new LispNumber("15"), evaluateString(input));
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}
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@Test
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public void multiplyWithManyNumbers_PositiveResult() {
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String input = "(* 2 3 5 1)";
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assertSExpressionsMatch(new LispNumber("30"), evaluateString(input));
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}
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@Test
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public void multiplyWithManyNumbers_NegativeResult() {
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String input = "(* 3 (- 2) 10 2)";
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assertSExpressionsMatch(new LispNumber("-120"), evaluateString(input));
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}
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@Test(expected = BadArgumentTypeException.class)
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public void multiplyWithNonNumber() {
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evaluateString("(* 'a 'b)");
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}
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}
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