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 PLUSTest {
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@Test
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public void plusWithNoArguments() {
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String input = "(+)";
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assertSExpressionsMatch(new LispNumber("0"), evaluateString(input));
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}
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@Test
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public void plusWithOneNumber() {
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String input = "(+ 27)";
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assertSExpressionsMatch(new LispNumber("27"), evaluateString(input));
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}
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@Test
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public void plusWithTwoNumbers() {
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String input = "(+ 5 3)";
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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 plusWithManyNumbers_PositiveResult() {
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String input = "(+ 200 100 10 5)";
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assertSExpressionsMatch(new LispNumber("315"), evaluateString(input));
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}
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@Test
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public void plusWithManyNumbers_NegativeResult() {
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String input = "(+ 100 (- 200) 20 5)";
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assertSExpressionsMatch(new LispNumber("-75"), evaluateString(input));
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}
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@Test(expected = BadArgumentTypeException.class)
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public void plusWithNonNumber() {
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evaluateString("(+ 'a 'b)");
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}
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}
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