configuration - Dropwizard 集成测试 : config resource file not found

Question

我正在尝试使用以下应用程序规则组装 Dropwizard 集成测试:

public static final DropwizardAppRule<MyConfiguration> RULE = new DropwizardAppRule<MyConfiguration>(
        MyApplication.class, ResourceHelpers.resourceFilePath("config_for_test.yml"));

当我运行测试时，我收到以下错误:

java.lang.IllegalArgumentException: resource config_for_test.yml not found.

完整的堆栈跟踪是:

java.lang.ExceptionInInitializerError
    at sun.misc.Unsafe.ensureClassInitialized(Native Method)
    at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:43)
    at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:142)
    at java.lang.reflect.Field.acquireFieldAccessor(Field.java:1082)
    at java.lang.reflect.Field.getFieldAccessor(Field.java:1063)
    at java.lang.reflect.Field.get(Field.java:387)
    at org.junit.runners.model.FrameworkField.get(FrameworkField.java:69)
    at org.junit.runners.model.TestClass.getAnnotatedFieldValues(TestClass.java:156)
    at org.junit.runners.ParentRunner.classRules(ParentRunner.java:215)
    at org.junit.runners.ParentRunner.withClassRules(ParentRunner.java:203)
    at org.junit.runners.ParentRunner.classBlock(ParentRunner.java:163)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:308)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: java.lang.RuntimeException: java.lang.IllegalArgumentException: resource config_for_test.yml not found.
    at io.dropwizard.testing.ResourceHelpers.resourceFilePath(ResourceHelpers.java:23)
    at de.emundo.sortimo.resource.TaskAdditionTest.<clinit>(TaskAdditionTest.java:28)
    ... 18 more
Caused by: java.lang.IllegalArgumentException: resource ../config_for_test.yml not found.
    at com.google.common.base.Preconditions.checkArgument(Preconditions.java:145)
    at com.google.common.io.Resources.getResource(Resources.java:197)
    at io.dropwizard.testing.ResourceHelpers.resourceFilePath(ResourceHelpers.java:21)
    ... 19 more

根据 another stackoverflow entry我应该只使用父文件夹 ../config_for_test.yml .但是，这并不能解决问题。

Answer 1

好的，我只是自己找到了解决方案。所以 Dropwizard 会查看 ${basedir}/src/test/resources对于配置文件，因为这是 maven 查找任何文件的默认目录。另一方面，当应用程序运行时，默认目录只是 ${basedir} .因此，以下方法将有所帮助:

只需使用 ../../../config_for_test.yml用于集成测试。

将配置文件移动到 ${basedir}/src/test/resources目录。

我使用了方法 2 并进一步移动了根据 config_for_release.yml至 src/main/resources为了有一个对称的文件结构。但是，当程序在正常模式下运行时(使用参数 server config_for_release.yml )，这会使 basedir 目录为空。因此，可以将参数调整为 server src/main/resources/config_for_release.yml .由于我不喜欢在方法启动时使用这么长的路径，我选择了一个不同的解决方案:我使用 maven copy plugin将文件复制到目标文件夹:

<plugin>                                                            
    <artifactId>maven-resources-plugin</artifactId>                 
    <version>2.7</version>                                          
    <executions>                                                    
        <execution>                                                 
            <id>copy-resources</id>                                 
            <!-- here the phase you need -->                        
            <phase>validate</phase>                                 
            <goals>                                                 
                <goal>copy-resources</goal>                         
            </goals>                                                
            <configuration>                                         
                <outputDirectory>${basedir}/target</outputDirectory>
                <resources>                                         
                    <resource>                                      
            Å           <directory>src/main/resources</directory>   
                        <filtering>true</filtering>                 
                        <includes>                                  
                            <include>**/*.yml</include>             
                        </includes>                                 
                    </resource>                                     
                </resources>                                        
            </configuration>                                        
        </execution>                                                
    </executions>                                                   
</plugin>   

然后程序以 server target/config_for_release.yml 启动.我主要使用目标文件夹，以便配置文件隐藏在 Eclipse 包资源管理器的相应文件夹中，并且我不会意外打开错误的配置文件。