在使用 Eclipse > Run as Junit Test 或 play 命令行时,只会将错误记录到控制台。如何显示在 Junit 测试期间生成的警告、信息和调试消息?
应用程序/控制器/Application.java
package controllers;
import play.*;
import play.mvc.*;
public class Application extends Controller {
public static Result index() {
Logger.trace("**** Logger.isTraceEnabled = " + Logger.isTraceEnabled()+ " *****");
Logger.debug("**** Logger.isDebugEnabled = " + Logger.isDebugEnabled()+ " *****");
Logger.info("**** Logger.isInfoEnabled = " + Logger.isInfoEnabled()+ " *****");
Logger.warn("**** Logger.isWarnEnabled = " + Logger.isWarnEnabled()+ " *****");
Logger.error("**** Logger.isErrorEnabled = " + Logger.isErrorEnabled()+ " *****");
return ok();
}
}
测试/ApplicationTest.java
import org.junit.*;
import play.Logger;
import static org.junit.Assert.assertTrue;
public class ApplicationTest {
@Test
public void loggingTest() {
Logger.trace("**** Logger.isTraceEnabled = " + Logger.isTraceEnabled()+ " *****");
Logger.debug("**** Logger.isDebugEnabled = " + Logger.isDebugEnabled()+ " *****");
Logger.info("**** Logger.isInfoEnabled = " + Logger.isInfoEnabled()+ " *****");
Logger.warn("**** Logger.isWarnEnabled = " + Logger.isWarnEnabled()+ " *****");
Logger.error("**** Logger.isErrorEnabled = " + Logger.isErrorEnabled()+ " *****");
assertTrue("should be true", true);
}
}
conf/application.conf
[...]
# Logger
# ~~~~~
# You can also configure logback (http://logback.qos.ch/), by providing a logger.xml file in the conf directory .
# (no logger configuration here)
conf/prod-logger.xml
<configuration>
<conversionRule conversionWord="coloredLevel" converterClass="play.api.Logger$ColoredLevel" />
<appender name="FILE" class="ch.qos.logback.core.FileAppender">
<file>${application.home}/logs/application.log</file>
<encoder>
<pattern>%date - [%level] - from %logger in %thread %n%message%n%xException%n</pattern>
</encoder>
</appender>
<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<pattern>%coloredLevel %logger{15} - %message%n%xException{5}</pattern>
</encoder>
</appender>
<logger name="play" level="INFO" />
<logger name="application" level="INFO" />
<root level="ERROR">
<appender-ref ref="STDOUT" />
<appender-ref ref="FILE" />
</root>
</configuration>
上面的代码有效地将日志配置为输出 INFO 消息,同时从命令行开始播放:
play -Dlogger.file=conf/prod-logger.xml start
curl http://localhost:9000/
产生这个输出:
[info] application - **** Logger.isInfoEnabled = true *****
[warn] application - **** Logger.isWarnEnabled = true *****
[error] application - **** Logger.isErrorEnabled = true *****
但是,运行测试时只显示错误:
david@localhost:~$ play -Dlogger.file=conf/prod-logger.xml test
13:19:10.354 [main] ERROR application - **** Logger.isErrorEnabled = false *****
[info] ApplicationTest
[info] + ApplicationTest.loggingTest
[info]
[info]
[info] Total for test ApplicationTest
[info] Finished in 0.034 seconds
注意:即使 Logger.isErrorEnabled 返回 false,也会在测试模式下显示错误消息。