76 lines
2.0 KiB
Java
76 lines
2.0 KiB
Java
package function.builtin.special;
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import static org.junit.Assert.assertEquals;
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import static testutil.TestUtilities.*;
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import java.io.*;
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import org.junit.*;
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import environment.Environment;
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import function.ArgumentValidator.*;
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public class DEFUNTester {
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private ByteArrayOutputStream outputStream;
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private void assertPrinted(String expected) {
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assertEquals(expected, outputStream.toString());
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}
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@Before
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public void setUp() {
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this.outputStream = new ByteArrayOutputStream();
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Environment.getInstance().setOutput(new PrintStream(outputStream));
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}
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@Test
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public void testDefun() {
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String input = "(defun f () nil)";
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assertSExpressionsMatch(parseString("f"), evaluateString(input));
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assertSExpressionsMatch(parseString("()"), evaluateString("(f)"));
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}
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@Test
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public void redefineFunction_DisplaysWarning() {
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String input = "(defun myFunction () nil)";
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evaluateString(input);
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evaluateString(input);
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assertPrinted("WARNING: redefining function MYFUNCTION\n");
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}
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@Test
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public void redefineFunction_ActuallyRedefinesFunction() {
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evaluateString("(defun myFunction2 () nil)");
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evaluateString("(defun myFunction2 () T)");
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assertPrinted("WARNING: redefining function MYFUNCTION2\n");
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assertSExpressionsMatch(parseString("t"), evaluateString("(myFunction2)"));
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}
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@Test(expected = DottedArgumentListException.class)
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public void testDefunWithDottedLambdaList() {
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String input = "(funcall 'defun 'x (cons 'a 'b) ())";
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evaluateString(input);
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}
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@Test(expected = BadArgumentTypeException.class)
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public void testDefunWithNonSymbolName() {
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evaluateString("(defun 1 () ())");
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}
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@Test(expected = BadArgumentTypeException.class)
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public void testDefunWithBadLambdaList() {
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evaluateString("(defun x a ())");
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}
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@Test(expected = TooFewArgumentsException.class)
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public void testApplyWithTooFewArguments() {
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evaluateString("(defun x ())");
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}
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}
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