92 lines
2.5 KiB
Java
92 lines
2.5 KiB
Java
package interpreter;
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import static error.ErrorManager.Severity.CRITICAL;
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import static org.junit.Assert.*;
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import java.io.*;
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import org.junit.*;
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import interpreter.LispInterpreterBuilderImpl.InterpreterAlreadyBuiltException;
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public class LispInterpreterBuilderTest {
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private LispInterpreterBuilder builder = new LispInterpreterBuilderImpl() {
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@Override
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public void reset() {
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this.isBuilt = false;
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}
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};
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private void setCommonFeatures() {
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builder.setOutput(new PrintStream(new ByteArrayOutputStream()));
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builder.setErrorOutput(new PrintStream(new ByteArrayOutputStream()));
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builder.setTerminationFunction(() -> {});
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builder.setErrorTerminationFunction(() -> {});
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}
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@Before
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public void setUp() throws Exception {
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builder.reset();
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}
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@After
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public void tearDown() throws Exception {
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builder.reset();
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}
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@Test
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public void buildInteractiveInterpreter() {
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setCommonFeatures();
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builder.setInput(System.in, "stdin");
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LispInterpreter interpreter = builder.build();
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assertTrue(interpreter instanceof InteractiveLispInterpreter);
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}
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@Test
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public void buildNonInteractiveInterpreter() {
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setCommonFeatures();
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builder.setInput(System.in, "stdin");
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builder.setNotInteractive();
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LispInterpreter interpreter = builder.build();
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assertFalse(interpreter instanceof InteractiveLispInterpreter);
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}
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@Test
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public void buildFileBasedInterpreter() {
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setCommonFeatures();
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builder.useFile("test/interpreter/test-files/file.lisp");
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LispInterpreter interpreter = builder.build();
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assertFalse(interpreter instanceof InteractiveLispInterpreter);
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}
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@Test(expected = InterpreterAlreadyBuiltException.class)
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public void cannotBuildMoreThanOneInterpreter() {
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builder.build();
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builder.build();
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}
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@Test
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public void interpreterAlreadyBuiltException_HasCorrectAttributes() {
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InterpreterAlreadyBuiltException e = new InterpreterAlreadyBuiltException();
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assertEquals(CRITICAL, e.getSeverity());
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assertNotNull(e.getMessage());
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assertTrue(e.getMessage().length() > 0);
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}
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@Test(expected = InterpreterAlreadyBuiltException.class)
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public void resetNormallyDoesNothing() {
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builder = new LispInterpreterBuilderImpl();
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builder.build();
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builder.reset();
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builder.build();
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}
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}
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