100 lines
2.5 KiB
Java
100 lines
2.5 KiB
Java
package function.builtin.special;
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import static org.junit.Assert.assertTrue;
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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.RuntimeEnvironment;
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import error.ErrorManager;
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import function.ArgumentValidator.*;
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import table.FunctionTable;
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public class DEFUNTester {
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private ByteArrayOutputStream outputStream;
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private RuntimeEnvironment environment;
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public DEFUNTester() {
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this.environment = RuntimeEnvironment.getInstance();
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}
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private void assertSomethingPrinted() {
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assertTrue(outputStream.toByteArray().length > 0);
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}
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@Before
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public void setUp() {
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outputStream = new ByteArrayOutputStream();
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environment.setOutput(new PrintStream(outputStream));
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environment.setErrorManager(new ErrorManager());
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FunctionTable.reset();
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}
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@After
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public void tearDown() {
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FunctionTable.reset();
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}
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@Test
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public void testDefun() {
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String input = "(defun f () t)";
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assertSExpressionsMatch(parseString("f"), evaluateString(input));
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assertSExpressionsMatch(parseString("t"), evaluateString("(f)"));
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}
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@Test
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public void testDefunWithEmptyBody() {
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String input = "(defun f ())";
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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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assertSomethingPrinted();
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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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assertSomethingPrinted();
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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 testDefunWithTooFewArguments() {
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evaluateString("(defun x)");
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}
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}
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