mysql - Play Framework 2.5 - 不使用内存数据库进行测试

Question

我一直在关注 PlayFramework 上的教程，但似乎它们都已经过时并且适用于较旧版本的 Play。

我想尝试使用 mysql 数据库而不是 h2 内存数据库进行 JUnit 测试。

我正在使用 ebean ORC(它的 api 显然与 play 2.2 中使用的不同，并且 api 没有很好的文档记录)。

无论如何，我想在 mysql 数据库上尝试 JUnit 测试，但总是出现配置错误。

这就是 JUnit 测试类的样子:

public class ModelsTest extends WithApplication {
    
    public  Application app;
    
    
    @Before
    public void setUp() throws FileNotFoundException, IOException {
        java.util.Properties externalProps=new java.util.Properties();
        externalProps.load(new FileInputStream("resources/test-ebean.properties"));
        ServerConfig config = new ServerConfig();
        config.setName("test");
        config.setDefaultServer(true);
        config.loadFromProperties(externalProps);
        EbeanServer server = EbeanServerFactory.create(config);
        
       
        app = Helpers.fakeApplication();
        
        Helpers.start(app);
       

    }
    
    @Test
    public void createAndRetrieveUser() {
        new User("bob@bob.bob", "admin", "admin").save();
        User bob = User.find.where().eq("email", "bob@bob.bob").findUnique();
        assertNotNull(bob);
        assertEquals("admin", bob.login);
    }
    
     @After
    public  void stopApp() {
        Helpers.stop(app);
        
    }

test-ebean.properties 文件:

ebean.ddl.generate=true
ebean.ddl.run=true

datasource.default=db

datasource.db.username="root"
datasource.db.password="root"
datasource.db.databaseUrl="jdbc:mysql://localhost:3306/test?characterEncoding=UTF-8"
datasource.db.databaseDriver=com.mysql.jdbc.Driver

运行测试时出现此错误:

[error] Test ModelsTest.createAndRetrieveUser failed:` play.api.Configuration$$anon$1: Configuration error[null], took 4.969 sec
    [error]     at play.api.Configuration$.configError(Configuration.scala:154)
    [error]     at play.api.Configuration.reportError(Configuration.scala:806)
    [error]     at play.Configuration.reportError(Configuration.java:366)
    [error]     at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.parse(DefaultEbeanConfig.java:81)
    [error]     at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.get(DefaultEbeanConfig.java:60)
    [error]     at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.get(DefaultEbeanConfig.java:44)
    [error]     at com.google.inject.internal.ProviderInternalFactory.provision(ProviderInternalFactory.java:81)
    [error]     at com.google.inject.internal.BoundProviderFactory.provision(BoundProviderFactory.java:72)
    [error]     at com.google.inject.internal.ProviderInternalFactory.circularGet(ProviderInternalFactory.java:61)
    [error]     at com.google.inject.internal.BoundProviderFactory.get(BoundProviderFactory.java:62)
    [error]     at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
    [error]     at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1103)
    [error]     at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
    [error]     at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:145)
    [error]     at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
    [error]     at com.google.inject.internal.SingleParameterInjector.inject(SingleParameterInjector.java:38)
    [error]     at com.google.inject.internal.SingleParameterInjector.getAll(SingleParameterInjector.java:62)
    [error]     at com.google.inject.internal.ConstructorInjector.provision(ConstructorInjector.java:104)
    [error]     at com.google.inject.internal.ConstructorInjector.construct(ConstructorInjector.java:85)
    [error]     at com.google.inject.internal.ConstructorBindingImpl$Factory.get(ConstructorBindingImpl.java:267)
    [error]     at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
    [error]     at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1103)
    [error]     at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
    [error]     at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:145)
    [error]     at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
    [error]     at com.google.inject.internal.FactoryProxy.get(FactoryProxy.java:56)
    [error]     at com.google.inject.internal.ProviderToInternalFactoryAdapter$1.call(ProviderToInternalFactoryAdapter.java:46)
    [error]     at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1103)
    [error]     at com.google.inject.internal.ProviderToInternalFactoryAdapter.get(ProviderToInternalFactoryAdapter.java:40)
    [error]     at com.google.inject.internal.SingletonScope$1.get(SingletonScope.java:145)
    [error]     at com.google.inject.internal.InternalFactoryToProviderAdapter.get(InternalFactoryToProviderAdapter.java:41)
    [error]     at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:205)
    [error]     at com.google.inject.internal.InternalInjectorCreator$1.call(InternalInjectorCreator.java:199)
    [error]     at com.google.inject.internal.InjectorImpl.callInContext(InjectorImpl.java:1092)
    [error]     at com.google.inject.internal.InternalInjectorCreator.loadEagerSingletons(InternalInjectorCreator.java:199)
    [error]     at com.google.inject.internal.InternalInjectorCreator.injectDynamically(InternalInjectorCreator.java:180)
    [error]     at com.google.inject.internal.InternalInjectorCreator.build(InternalInjectorCreator.java:110)
    [error]     at com.google.inject.Guice.createInjector(Guice.java:96)
    [error]     at com.google.inject.Guice.createInjector(Guice.java:84)
    [error]     at play.api.inject.guice.GuiceBuilder.injector(GuiceInjectorBuilder.scala:181)
    [error]     at play.api.inject.guice.GuiceApplicationBuilder.build(GuiceApplicationBuilder.scala:123)
    [error]     at play.api.test.FakeApplication.<init>(Fakes.scala:209)
    [error]     at play.test.FakeApplication.<init>(FakeApplication.java:51)
    [error]     at play.test.Helpers.fakeApplication(Helpers.java:124)
    [error]     at play.test.WithApplication.provideFakeApplication(WithApplication.java:46)
    [error]     at play.test.WithApplication.provideApplication(WithApplication.java:33)
    [error]     at play.test.WithApplication.startPlay(WithApplication.java:51)
    [error]     ...
    [error] Caused by: java.lang.NullPointerException
    [error]     at play.db.ebean.DefaultEbeanConfig$EbeanConfigParser.parse(DefaultEbeanConfig.java:79)
    [error]     ... 78 more
    [error] Test ModelsTest.createAndRetrieveUser failed: java.lang.NullPointerException: null, took 4.979 sec
    [error]     at play.test.Helpers.stop(Helpers.java:376)
    [error]     at ModelsTest.stopApp(ModelsTest.java:58)
    [error]     ...
    [error] Failed: Total 1, Failed 1, Errors 0, Passed 0
    [error] Failed tests:
    [error]     ModelsTest
    [error] (test:testOnly) sbt.TestsFailedException: Tests unsuccessful

我刚刚开始学习游戏(但实际上大多数教程都已经过时)，并且我花了更多的时间尝试配置它来运行而不是实际编码。我想我应该寻找另一个框架。

Answer 1

您不需要仅仅为了测试而设置整个数据库(当然，您可以自由地这样做)。 Play 强烈依赖于内存数据库(例如在开发过程中)，您也可以在测试中使用它:

@Test
public void findById() {
    running(fakeApplication(inMemoryDatabase("test")), () -> {
        User bob = User.findById(21l);
        assertEquals("bob@bob.bob", bob.email);
        assertEquals("admin", bob.login);
    });
}

<小时/>

另一方面，如果您确实想测试数据库访问代码，您可以创建一个数据库测试对象:

Database database = Databases.createFrom(
        "com.mysql.jdbc.Driver",
        "jdbc:mysql://localhost/test"
);

这又可以在内存中:

Database database = Databases.inMemory(
        "mydatabase",
        ImmutableMap.of(
                "MODE", "MYSQL"
        ),
        ImmutableMap.of(
                "logStatements", true
        )
);

只是不要忘记在测试后释放资源:

@After
public void shutdownDatabase() {
    database.shutdown();
}