95 lines
2.5 KiB
Java
95 lines
2.5 KiB
Java
package function.builtin.special;
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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 CONDTester {
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@Test
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public void condWithNoArguments() {
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String input = "(cond)";
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assertSExpressionsMatch(parseString("nil"), evaluateString(input));
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}
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@Test
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public void condWithTrue() {
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String input = "(cond (T))";
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assertSExpressionsMatch(parseString("T"), evaluateString(input));
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}
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@Test
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public void condWithNumber() {
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String input = "(cond ((+ 1 2)))";
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assertSExpressionsMatch(parseString("3"), evaluateString(input));
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}
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@Test
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public void condWithSingleClause() {
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String input = "(cond (T \"true\"))";
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assertSExpressionsMatch(parseString("\"true\""), evaluateString(input));
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}
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@Test
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public void condWithMultipleClauses() {
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String input = "(cond ((= 1 2) 2) ((= 1 2) 2) ((= 1 1) 3))";
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assertSExpressionsMatch(parseString("3"), evaluateString(input));
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}
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@Test
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public void condWithMultipleTrueTests_ReturnsFirstOne() {
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String input = "(cond ((= 1 1) 2) ((= 1 1) 3))";
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assertSExpressionsMatch(parseString("2"), evaluateString(input));
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}
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@Test
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public void condWithMultipleTrueTests_OnlyEvaluatesFirstOne() {
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String input = "(cond ((= 1 1) 2) ((= 1 1) x))";
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assertSExpressionsMatch(parseString("2"), evaluateString(input));
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}
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@Test
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public void condWithMultipleValuesInConsequent_OnlyReturnsLast() {
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String input = "(cond ((= 1 1) 2 3 4))";
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assertSExpressionsMatch(parseString("4"), evaluateString(input));
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}
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@Test
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public void condWithNoTrueTest_ReturnsNil() {
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String input = "(cond ((= 1 2) T) ((= 1 3) T))";
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assertSExpressionsMatch(parseString("nil"), evaluateString(input));
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}
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@Test(expected = BadArgumentTypeException.class)
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public void condWithEmptyListArgument_ThrowsException() {
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evaluateString("(cond ())");
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}
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@Test(expected = BadArgumentTypeException.class)
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public void condWithNilArgument_ThrowsException() {
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evaluateString("(cond nil)");
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}
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@Test(expected = BadArgumentTypeException.class)
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public void condWithNonListArgument_ThrowsException() {
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evaluateString("(cond o)");
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}
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@Test(expected = DottedArgumentListException.class)
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public void condWithDottedArgumentList_ThrowsException() {
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evaluateString("(apply 'cond (cons '(nil T) 'b))");
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}
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}
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