transcendental-lisp/test/function/builtin/LOADTester.java

133 lines
3.7 KiB
Java

package function.builtin;
import static org.junit.Assert.assertTrue;
import static testutil.TestUtilities.evaluateString;
import static testutil.TypeAssertions.*;
import java.io.*;
import org.junit.*;
import environment.RuntimeEnvironment;
import error.ErrorManager;
import function.ArgumentValidator.*;
public class LOADTester {
private ByteArrayOutputStream outputStream;
private ByteArrayOutputStream errorOutputStream;
private RuntimeEnvironment environment;
public LOADTester() {
this.environment = RuntimeEnvironment.getInstance();
}
private void assertWarningMessagePrinted() {
assertTrue(outputStream.toByteArray().length > 0);
assertTrue(errorOutputStream.toByteArray().length == 0);
}
private void assertErrorMessagePrinted() {
assertTrue(errorOutputStream.toByteArray().length > 0);
assertTrue(outputStream.toByteArray().length == 0);
}
private void assertNothingPrinted() {
assertTrue(errorOutputStream.toByteArray().length == 0);
assertTrue(outputStream.toByteArray().length == 0);
}
@Before
public void setUp() {
outputStream = new ByteArrayOutputStream();
errorOutputStream = new ByteArrayOutputStream();
environment.reset();
environment.setOutput(new PrintStream(outputStream));
environment.setErrorOutput(new PrintStream(errorOutputStream));
environment.setErrorManager(new ErrorManager());
environment.setPath("");
environment.setOutputDecorator(s -> s);
environment.setWarningOutputDecorator(s -> s);
environment.setErrorOutputDecorator(s -> s);
}
@After
public void tearDown() {
environment.reset();
}
@Test
public void loadEmptyFileName_ReturnsNilAndPrintsWarning() {
String input = "(load \"\")";
assertNil(evaluateString(input));
assertWarningMessagePrinted();
}
@Test
public void loadGoodFile_ReturnsTAndPrintsNothing() {
String input = "(load \"test/function/builtin/test-files/load-good.lisp\")";
assertT(evaluateString(input));
assertNothingPrinted();
}
@Test
public void loadBadFile_ReturnsNilAndPrintsError() {
String input = "(load \"test/function/builtin/test-files/load-bad.lisp\")";
assertNil(evaluateString(input));
assertErrorMessagePrinted();
}
@Test
public void loadNonExistentFile_ReturnsNilAndPrintsWarning() {
String input = "(load \"doesNotExist.lisp\")";
assertNil(evaluateString(input));
assertWarningMessagePrinted();
}
@Test
public void nestedLoadsInTheSameDirectory() {
String input = "(load \"test/function/builtin/test-files/nested/nested.lisp\")";
assertT(evaluateString(input));
assertNothingPrinted();
}
@Test
public void nestedLoadsInDifferentDirectories() {
String input = "(load \"test/function/builtin/test-files/nested/one/load-one.lisp\")";
assertT(evaluateString(input));
assertNothingPrinted();
}
@Test(expected = BadArgumentTypeException.class)
public void loadWithBadArgumentType() {
evaluateString("(load '1)");
}
@Test(expected = TooManyArgumentsException.class)
public void loadWithTooManyArguments() {
evaluateString("(load \"1\" \"2\")");
}
@Test(expected = TooFewArgumentsException.class)
public void loadWithTooFewArguments() {
evaluateString("(load)");
}
@Test
public void loadUsesRuntimePath() {
environment.setPath("test/function/builtin/test-files/nested/one/");
String input = "(load \"load-one.lisp\")";
assertT(evaluateString(input));
assertNothingPrinted();
}
}