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/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @summary Test custom id generators
* @build KullaTesting TestingInputStream
* @run testng IdGeneratorTest
*/
import java.io.ByteArrayOutputStream;
import java.io.PrintStream;
import java.util.List;
import java.util.function.Supplier;
import jdk.jshell.EvalException;
import jdk.jshell.JShell;
import jdk.jshell.SnippetEvent;
import jdk.jshell.UnresolvedReferenceException;
import jdk.jshell.VarSnippet;
import org.testng.annotations.Test;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
@Test
public class IdGeneratorTest {
public JShell.Builder getBuilder() {
TestingInputStream inStream = new TestingInputStream();
ByteArrayOutputStream outStream = new ByteArrayOutputStream();
ByteArrayOutputStream errStream = new ByteArrayOutputStream();
return JShell.builder()
.in(inStream)
.out(new PrintStream(outStream))
.err(new PrintStream(errStream));
}
public void testTempNameGenerator() {
JShell.Builder builder = getBuilder().tempVariableNameGenerator(new Supplier<String>() {
int count = 0;
@Override
public String get() {
return "temp" + ++count;
}
});
try (JShell jShell = builder.build()) {
for (int i = 0; i < 3; ++i) {
VarSnippet v = (VarSnippet) jShell.eval("2 + " + (i + 1)).get(0).snippet();
assertEquals("temp" + (i + 1), v.name(), "Custom id: ");
}
}
}
public void testResetTempNameGenerator() {
JShell.Builder builder = getBuilder().tempVariableNameGenerator(() -> {
throw new AssertionError("Should not be called");
});
try (JShell jShell = builder.tempVariableNameGenerator(null).build()) {
jShell.eval("2 + 2");
}
}
public void testIdGenerator() {
JShell.Builder builder = getBuilder().idGenerator(((snippet, id) -> "custom" + id));
try (JShell jShell = builder.build()) {
List<SnippetEvent> eval = jShell.eval("int a, b;");
checkIds(eval);
checkIds(jShell.drop(eval.get(0).snippet()));
}
}
private void checkIds(List<SnippetEvent> events) {
for (SnippetEvent event : events) {
assertTrue(event.snippet().id().startsWith("custom"), "Not started with \"custom\": "
+ event.snippet().id());
}
}
public void testIdInException() {
JShell.Builder builder = getBuilder().idGenerator(((snippet, id) -> "custom" + id));
try (JShell jShell = builder.build()) {
EvalException evalException = (EvalException) jShell.eval("throw new Error();").get(0).exception();
for (StackTraceElement ste : evalException.getStackTrace()) {
assertTrue(ste.getFileName().startsWith("#custom"), "Not started with \"#custom\": "
+ ste.getFileName());
}
jShell.eval("void f() { g(); }");
UnresolvedReferenceException unresolvedException = (UnresolvedReferenceException) jShell.eval("f();").get(0).exception();
for (StackTraceElement ste : unresolvedException.getStackTrace()) {
assertTrue(ste.getFileName().startsWith("#custom"), "Not started with \"#custom\": "
+ ste.getFileName());
}
}
}
public void testResetIdGenerator() {
JShell.Builder builder = getBuilder().idGenerator((sn, id) -> {
throw new AssertionError("Should not be called");
});
try (JShell jShell = builder.idGenerator(null).build()) {
jShell.eval("2 + 2");
}
}
}
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