60 lines
1.6 KiB
Java
60 lines
1.6 KiB
Java
package function.builtin.cons;
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import static testutil.TestUtilities.assertSExpressionsMatch;
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import static testutil.TestUtilities.evaluateString;
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import static testutil.TestUtilities.parseString;
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import org.junit.Test;
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import function.ArgumentValidator.BadArgumentTypeException;
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import function.ArgumentValidator.TooFewArgumentsException;
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import function.ArgumentValidator.TooManyArgumentsException;
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import testutil.SymbolAndFunctionCleaner;
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public class RESTTest extends SymbolAndFunctionCleaner {
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@Test
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public void restOfNil() {
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String input = "(rest nil)";
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assertSExpressionsMatch(parseString("()"), evaluateString(input));
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}
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@Test
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public void restOfList() {
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String input = "(rest '(1 2 3))";
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assertSExpressionsMatch(parseString("(2 3)"), evaluateString(input));
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}
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@Test
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public void cdrOfList() {
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String input = "(cdr '(1 2 3))";
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assertSExpressionsMatch(parseString("(2 3)"), evaluateString(input));
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}
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@Test
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public void nestedRestOfList() {
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String input = "(rest (rest '(1 2 3)))";
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assertSExpressionsMatch(parseString("(3)"), evaluateString(input));
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}
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@Test(expected = BadArgumentTypeException.class)
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public void restOfSymbol() {
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evaluateString("(rest 'x)");
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}
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@Test(expected = TooManyArgumentsException.class)
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public void restWithTooManyArguments() {
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evaluateString("(rest '(1 2) '(1 2) \"oh\")");
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}
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@Test(expected = TooFewArgumentsException.class)
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public void restWithTooFewArguments() {
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evaluateString("(rest)");
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}
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}
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