48 lines
1.1 KiB
Java
48 lines
1.1 KiB
Java
package function.builtin.cons;
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import static testutil.TestUtilities.*;
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import org.junit.Test;
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import function.ArgumentValidator.*;
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public class LENGTHTester {
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@Test
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public void lengthOfNil() {
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String input = "(length '())";
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assertSExpressionsMatch(parseString("0"), evaluateString(input));
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}
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@Test
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public void lengthOfListOfOneElement() {
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String input = "(length '(1))";
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assertSExpressionsMatch(parseString("1"), evaluateString(input));
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}
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@Test
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public void lengthOfListOfManyElements() {
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String input = "(length '(1 2 3 4 5))";
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assertSExpressionsMatch(parseString("5"), evaluateString(input));
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}
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@Test(expected = BadArgumentTypeException.class)
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public void lengthWithNonList() {
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evaluateString("(length 'x)");
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}
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@Test(expected = TooManyArgumentsException.class)
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public void lengthWithTooManyArguments() {
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evaluateString("(length '(1 2) '(1 2))");
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}
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@Test(expected = TooFewArgumentsException.class)
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public void lengthWithTooFewArguments() {
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evaluateString("(length)");
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}
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}
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