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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.yolean;
import org.junit.Test;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.nio.file.NoSuchFileException;
import java.util.Optional;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
/**
* @author bratseth
*/
public class ExceptionsTestCase {
@Test
public void testFindCause() {
IllegalArgumentException e1 = new IllegalArgumentException();
IllegalStateException e2 = new IllegalStateException(e1);
RuntimeException e3 = new RuntimeException(e2);
assertEquals(Optional.of(e3), Exceptions.findCause(e3, RuntimeException.class));
assertEquals(Optional.of(e1), Exceptions.findCause(e3, IllegalArgumentException.class));
assertEquals(Optional.empty(), Exceptions.findCause(e3, NumberFormatException.class));
assertEquals(Optional.of(e2), Exceptions.findCause(e2, RuntimeException.class));
}
@Test
public void testToMessageStrings() {
assertEquals("Blah",Exceptions.toMessageString(new Exception("Blah")));
assertEquals("Blah", Exceptions.toMessageString(new Exception(new Exception("Blah"))));
assertEquals("Exception",Exceptions.toMessageString(new Exception()));
assertEquals("Foo: Blah",Exceptions.toMessageString(new Exception("Foo",new Exception(new IllegalArgumentException("Blah")))));
assertEquals("Foo",Exceptions.toMessageString(new Exception("Foo",new Exception("Foo"))));
assertEquals("Foo: Exception",Exceptions.toMessageString(new Exception("Foo",new Exception())));
assertEquals("Foo",Exceptions.toMessageString(new Exception(new Exception("Foo"))));
}
@Test
public void testUnchecks() {
try {
Exceptions.uncheck(this::throwNoSuchFileException);
} catch (UncheckedIOException e) {
assertEquals("filename", e.getCause().getMessage());
}
try {
Exceptions.uncheck(this::throwNoSuchFileException, "additional %s", "info");
} catch (UncheckedIOException e) {
assertEquals("additional info", e.getMessage());
}
try {
int i = Exceptions.uncheck(this::throwNoSuchFileExceptionSupplier);
} catch (UncheckedIOException e) {
assertEquals("filename", e.getCause().getMessage());
}
try {
int i = Exceptions.uncheck(this::throwNoSuchFileExceptionSupplier, "additional %s", "info");
} catch (UncheckedIOException e) {
assertEquals("additional info", e.getMessage());
}
Exceptions.uncheckAndIgnore(this::throwNoSuchFileException, NoSuchFileException.class);
assertNull(Exceptions.uncheckAndIgnore(this::throwNoSuchFileExceptionSupplier, NoSuchFileException.class));
}
private void throwNoSuchFileException() throws IOException {
throw new NoSuchFileException("filename");
}
private int throwNoSuchFileExceptionSupplier() throws IOException {
throw new NoSuchFileException("filename");
}
}
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