/*
* 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.
*/
import java.util.ResourceBundle;
import java.util.function.Consumer;
import java.lang.System.Logger.Level;
import java.util.Arrays;
import java.util.LinkedList;
import java.util.Objects;
import java.util.Queue;
import java.util.function.Supplier;
/**
* @test
* @bug 8140364
* @summary Tests the default body of the System.Logger interface.
* @author danielfuchs
*/
public class LoggerInterfaceTest {
public static class LoggerImpl implements System.Logger {
public static class LogEvent implements Cloneable {
Level level;
ResourceBundle bundle;
String msg;
Throwable thrown;
Object[] params;
StackTraceElement[] callStack;
@Override
protected LogEvent clone() {
try {
return (LogEvent)super.clone();
} catch (CloneNotSupportedException x) {
throw new RuntimeException(x);
}
}
}
public static class LogEventBuilder {
private LogEvent event = new LogEvent();
public LogEventBuilder level(Level level) {
event.level = level;
return this;
}
public LogEventBuilder stack(StackTraceElement... stack) {
event.callStack = stack;
return this;
}
public LogEventBuilder bundle(ResourceBundle bundle) {
event.bundle = bundle;
return this;
}
public LogEventBuilder msg(String msg) {
event.msg = msg;
return this;
}
public LogEventBuilder thrown(Throwable thrown) {
event.thrown = thrown;
return this;
}
public LogEventBuilder params(Object... params) {
event.params = params;
return this;
}
public LogEvent build() {
return event.clone();
}
public LogEventBuilder clear() {
event = new LogEvent();
return this;
}
}
Level level = Level.WARNING;
Consumer<LogEvent> consumer;
final LogEventBuilder builder = new LogEventBuilder();
@Override
public String getName() {
return "noname";
}
@Override
public boolean isLoggable(Level level) {
return level.getSeverity() >= this.level.getSeverity();
}
@Override
public void log(Level level, ResourceBundle bundle, String msg, Throwable thrown) {
builder.clear().level(level).bundle(bundle).msg(msg).thrown(thrown)
.stack(new Exception().getStackTrace());
consumer.accept(builder.build());
}
@Override
public void log(Level level, ResourceBundle bundle, String format, Object... params) {
builder.clear().level(level).bundle(bundle).msg(format).params(params)
.stack(new Exception().getStackTrace());
consumer.accept(builder.build());
}
}
static class Throwing {
@Override
public String toString() {
throw new RuntimeException("should not have been called");
}
}
static class NotTrowing {
private final String toString;
private int count = 0;
public NotTrowing(String toString) {
this.toString = toString;
}
@Override
public String toString() {
return toString + "[" + (++count) + "]";
}
}
public static void main(String[] args) {
final LoggerImpl loggerImpl = new LoggerImpl();
final System.Logger logger = loggerImpl;
final Queue<LoggerImpl.LogEvent> events = new LinkedList<>();
loggerImpl.consumer = (x) -> events.add(x);
System.out.println("\nlogger.isLoggable(Level)");
assertTrue(logger.isLoggable(Level.WARNING), "logger.isLoggable(Level.WARNING)"," ");
assertFalse(logger.isLoggable(Level.INFO), "logger.isLoggable(Level.INFO)", " ");
System.out.println("\nlogger.log(Level, Object)");
for (Level l : Level.values()) {
boolean logged = l.compareTo(Level.WARNING) >= 0;
Object[][] cases = new Object[][] {
{null}, {"baz"}
};
for (Object[] p : cases) {
String msg = (String)p[0];
final Object obj = msg == null ? null : logged ? new NotTrowing(msg) : new Throwing();
String par1 = msg == null ? "(Object)null"
: logged ? "new NotTrowing(\""+ msg+"\")" : "new Throwing()";
System.out.println(" logger.log(" + l + ", " + par1 + ")");
try {
logger.log(l, obj);
if (obj == null) {
throw new RuntimeException("Expected NullPointerException not thrown for"
+ " logger.log(" + l + ", " + par1 + ")");
}
} catch (NullPointerException x) {
if (obj == null) {
System.out.println(" Got expected exception: " + x);
continue;
} else {
throw x;
}
}
LoggerImpl.LogEvent e = events.poll();
if (logged) {
assertNonNull(e, "e", " ");
assertEquals(l, e.level, "e.level", " ");
assertToString(e.msg, msg, 1, "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.params, null, "e.params", " ");
assertEquals(e.thrown, null, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
} else {
assertEquals(e, null, "e", " ");
}
}
}
System.out.println(" logger.log(" + null + ", " +
"new NotThrowing(\"foobar\")" + ")");
try {
logger.log(null, new NotTrowing("foobar"));
throw new RuntimeException("Expected NullPointerException not thrown for"
+ " logger.log(" + null + ", "
+ "new NotThrowing(\"foobar\")" + ")");
} catch (NullPointerException x) {
System.out.println(" Got expected exception: " + x);
}
System.out.println("\nlogger.log(Level, String)");
for (Level l : Level.values()) {
boolean logged = l.compareTo(Level.WARNING) >= 0;
String par = "bar";
System.out.println(" logger.log(" + l + ", \"" + par +"\");");
logger.log(l, par);
LoggerImpl.LogEvent e = events.poll();
assertNonNull(e, "e", " ");
assertEquals(e.level, l, "e.level", " ");
assertEquals(e.msg, "bar", "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.params, null, "e.params", " ");
assertEquals(e.thrown, null, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
System.out.println(" logger.log(" + l + ", (String)null);");
logger.log(l, (String)null);
e = events.poll();
assertNonNull(e, "e", " ");
assertEquals(e.level, l, "e.level", " ");
assertEquals(e.msg, null, "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.params, null, "e.params", " ");
assertEquals(e.thrown, null, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
}
System.out.println("\nlogger.log(Level, Supplier<String>)");
for (Level l : Level.values()) {
boolean logged = l.compareTo(Level.WARNING) >= 0;
Object[][] cases = new Object[][] {
{null}, {"baz"}
};
for (Object[] p : cases) {
String msg = (String)p[0];
final Object obj = msg == null ? null : logged ? new NotTrowing(msg) : new Throwing();
final Supplier<String> s = msg == null ? null : () -> obj.toString();
String par1 = msg == null ? "(Supplier<String>)null"
: logged ? "() -> new NotTrowing(\""+ msg+"\").toString()" : "new Throwing()";
System.out.println(" logger.log(" + l + ", " + par1 + ")");
try {
logger.log(l, s);
if (s == null) {
throw new RuntimeException("Expected NullPointerException not thrown for"
+ " logger.log(" + l + ", " + par1 + ")");
}
} catch (NullPointerException x) {
if (s == null) {
System.out.println(" Got expected exception: " + x);
continue;
} else {
throw x;
}
}
LoggerImpl.LogEvent e = events.poll();
if (logged) {
assertNonNull(e, "e", " ");
assertEquals(l, e.level, "e.level", " ");
assertToString(e.msg, msg, 1, "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.params, null, "e.params", " ");
assertEquals(e.thrown, null, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
} else {
assertEquals(e, null, "e", " ");
}
}
}
System.out.println(" logger.log(" + null + ", " + "() -> \"biz\"" + ")");
try {
logger.log(null, () -> "biz");
throw new RuntimeException("Expected NullPointerException not thrown for"
+ " logger.log(" + null + ", "
+ "() -> \"biz\"" + ")");
} catch (NullPointerException x) {
System.out.println(" Got expected exception: " + x);
}
System.out.println("\nlogger.log(Level, String, Object...)");
for (Level l : Level.values()) {
boolean logged = l.compareTo(Level.WARNING) >= 0;
String par = "bam";
Object[] params = null;
System.out.println(" logger.log(" + l + ", \"" + par +"\", null);");
logger.log(l, par, params);
LoggerImpl.LogEvent e = events.poll();
assertNonNull(e, "e", " ");
assertEquals(l, e.level, "e.level", " ");
assertEquals(e.msg, "bam", "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.params, null, "e.params", " ");
assertEquals(e.thrown, null, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
params = new Object[] {new NotTrowing("one")};
par = "bam {0}";
System.out.println(" logger.log(" + l + ", \"" + par
+ "\", new NotTrowing(\"one\"));");
logger.log(l, par, params[0]);
e = events.poll();
assertNonNull(e, "e", " ");
assertEquals(l, e.level, "e.level", " ");
assertEquals(e.msg, par, "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertArrayEquals(e.params, params, "e.params", " ");
assertEquals(e.thrown, null, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
params = new Object[] {new NotTrowing("fisrt"), new NotTrowing("second")};
par = "bam {0} {1}";
System.out.println(" logger.log(" + l + ", \"" + par
+ "\", new NotTrowing(\"fisrt\"),"
+ " new NotTrowing(\"second\"));");
logger.log(l, par, params[0], params[1]);
e = events.poll();
assertNonNull(e, "e", " ");
assertEquals(l, e.level, "e.level", " ");
assertEquals(e.msg, par, "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertArrayEquals(e.params, params, "e.params", " ");
assertEquals(e.thrown, null, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
params = new Object[] {new NotTrowing("third"), new NotTrowing("fourth")};
par = "bam {2}";
System.out.println(" logger.log(" + l + ", \"" + par
+ "\", new Object[] {new NotTrowing(\"third\"),"
+ " new NotTrowing(\"fourth\")});");
logger.log(l, par, params);
e = events.poll();
assertNonNull(e, "e", " ");
assertEquals(l, e.level, "e.level", " ");
assertEquals(e.msg, par, "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertArrayEquals(e.params, params, "e.params", " ");
assertEquals(e.thrown, null, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(), logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
}
System.out.println("\nlogger.log(Level, String, Throwable)");
for (Level l : Level.values()) {
boolean logged = l.compareTo(Level.WARNING) >= 0;
Object[][] cases = new Object[][] {
{null, null}, {null, new Throwable()}, {"biz", null}, {"boz", new Throwable()}
};
for (Object[] p : cases) {
String msg = (String)p[0];
Throwable thrown = (Throwable)p[1];
String par1 = msg == null ? "(String)null" : "\"" + msg + "\"";
String par2 = thrown == null ? "(Throwable)null" : "new Throwable()";
System.out.println(" logger.log(" + l + ", " + par1 +", " + par2 + ")");
logger.log(l, msg, thrown);
LoggerImpl.LogEvent e = events.poll();
assertNonNull(e, "e", " ");
assertEquals(e.level, l, "e.level", " ");
assertEquals(e.msg, msg, "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.params, null, "e.params", " ");
assertEquals(e.thrown, thrown, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(),
"log", "e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
}
}
System.out.println("\nlogger.log(Level, Supplier<String>, Throwable)");
for (Level l : Level.values()) {
boolean logged = l.compareTo(Level.WARNING) >= 0;
Object[][] cases = new Object[][] {
{null, null}, {null, new Throwable()}, {"biz", null}, {"boz", new Throwable()}
};
for (Object[] p : cases) {
String msg = (String)p[0];
Throwable thrown = (Throwable)p[1];
final Object obj = msg == null ? null : logged ? new NotTrowing(msg) : new Throwing();
final Supplier<String> s = msg == null ? null : () -> obj.toString();
String par1 = msg == null ? "(Supplier<String>)null"
: logged ? "() -> new NotTrowing(\""+ msg+"\").toString()" : "new Throwing()";
String par2 = thrown == null ? "(Throwable)null" : "new Throwable()";
System.out.println(" logger.log(" + l + ", " + par1 +", " + par2 + ")");
try {
logger.log(l, s, thrown);
if (s== null) {
throw new RuntimeException("Expected NullPointerException not thrown for"
+ " logger.log(" + l + ", " + par1 +", " + par2 + ")");
}
} catch (NullPointerException x) {
if (s == null) {
System.out.println(" Got expected exception: " + x);
continue;
} else {
throw x;
}
}
LoggerImpl.LogEvent e = events.poll();
if (logged) {
assertNonNull(e, "e", " ");
assertEquals(l, e.level, "e.level", " ");
assertToString(e.msg, msg, 1, "e.msg", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.params, null, "e.params", " ");
assertEquals(e.thrown, thrown, "e.thrown", " ");
assertEquals(e.bundle, null, "e.bundle", " ");
assertEquals(e.callStack[0].getMethodName(), "log",
"e.callStack[0].getMethodName()", " ");
assertEquals(e.callStack[0].getClassName(),
logger.getClass().getName(),
"e.callStack[0].getClassName() ", " ");
assertEquals(e.callStack[1].getMethodName(), "log",
"e.callStack[1].getMethodName()", " ");
assertEquals(e.callStack[1].getClassName(),
System.Logger.class.getName(),
"e.callStack[1].getClassName() ", " ");
assertEquals(e.callStack[2].getMethodName(), "main",
"e.callStack[2].getMethodName()", " ");
} else {
assertEquals(e, null, "e", " ");
}
}
}
System.out.println(" logger.log(" + null + ", " + "() -> \"biz\""
+ ", " + "new Throwable()" + ")");
try {
logger.log(null, () -> "biz", new Throwable());
throw new RuntimeException("Expected NullPointerException not thrown for"
+ " logger.log(" + null + ", "
+ "() -> \"biz\"" + ", "
+ "new Throwable()" + ")");
} catch (NullPointerException x) {
System.out.println(" Got expected exception: " + x);
}
System.out.println("Checking that we have no spurious events in the queue");
assertEquals(events.poll(), null, "events.poll()", " ");
}
static void assertTrue(boolean test, String what, String prefix) {
if (!test) {
throw new RuntimeException("Expected true for " + what);
}
System.out.println(prefix + "Got expected " + what + ": " + test);
}
static void assertFalse(boolean test, String what, String prefix) {
if (test) {
throw new RuntimeException("Expected false for " + what);
}
System.out.println(prefix + "Got expected " + what + ": " + test);
}
static void assertToString(String actual, String expected, int count, String what, String prefix) {
assertEquals(actual, expected + "["+count+"]", what, prefix);
}
static void assertEquals(Object actual, Object expected, String what, String prefix) {
if (!Objects.equals(actual, expected)) {
throw new RuntimeException("Bad " + what + ":"
+ "\n\t expected: " + expected
+ "\n\t actual: " + actual);
}
System.out.println(prefix + "Got expected " + what + ": " + actual);
}
static void assertArrayEquals(Object[] actual, Object[] expected, String what, String prefix) {
if (!Objects.deepEquals(actual, expected)) {
throw new RuntimeException("Bad " + what + ":"
+ "\n\t expected: " + expected == null ? "null" : Arrays.deepToString(expected)
+ "\n\t actual: " + actual == null ? "null" : Arrays.deepToString(actual));
}
System.out.println(prefix + "Got expected " + what + ": " + Arrays.deepToString(actual));
}
static void assertNonNull(Object actual, String what, String prefix) {
if (Objects.equals(actual, null)) {
throw new RuntimeException("Bad " + what + ":"
+ "\n\t expected: non null"
+ "\n\t actual: " + actual);
}
System.out.println(prefix + "Got expected " + what + ": " + "non null");
}
}