小编Dav*_*ave的帖子

在我们的 Azure Pipeline 中，我们尝试使用以下任务在 Angular 9 应用程序中运行端到端测试...

package.json 定义了这个...

  "scripts": {
    ...
    "e2e": "npm run install-puppeteer && ng e2e"
  },

但是当代理运行上述任务时，它会因“无法打开 X 显示”错误而终止......

> npm run install-puppeteer && ng test "--watch=false" "--codeCoverage=true" 





> thermo-protect-ui@0.0.0 install-puppeteer /home/vsts/work/1/s 

> cd node_modules/puppeteer && npm run install 





> puppeteer@5.5.0 install /home/vsts/work/1/s/node_modules/puppeteer 

> node install.js 



Chromium is already in /home/vsts/work/1/s/node_modules/puppeteer/.local-chromium/linux-818858; skipping download. 

08 12 2020 18:54:56.858:INFO [karma-server]: Karma v4.4.1 server started at http://0.0.0.0:9876/ 

08 12 2020 18:54:56.863:INFO [launcher]: Launching browsers Chrome with concurrency unlimited 

08 …

我正在使用Hibernate 4.0.1.Final编写一个独立的Java应用程序.在测试我的数据访问层时,我遇到以下异常

org.hibernate.HibernateException:没有活动事务,createCriteria无效

搜索对象时 我正在尝试将我的事务级代码与我的数据库操作代码分开.我的JUnit测试是

@Before
public void setUpDAOTest() { 
    final Configuration configuration = new Configuration();
    configuration.configure().setProperty("hibernate.show_sql", "false");
    final ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(configuration.getProperties()).buildServiceRegistry();
    sessionFactory = configuration.buildSessionFactory(serviceRegistry);
    orgDao = new OrganizationDAOImpl(sessionFactory);
    session = sessionFactory.openSession();
    tx = session.beginTransaction();
}   // setUp

@Test
public void testFindStateByAbbrev() { 
    final String abbrev = testProps.getProperty("test.state.abbrev");
    final State state = orgDao.findStateByAbbrev(abbrev);
    Assert.assertNotNull(state);
    Assert.assertEquals(testProps.getProperty("test.state.abbrev"), state.getAbbrev());
}   // testFindStateByAbbrev

和单元测试调用的代码是......

public class OrganizationDAOImpl extends AbstractDAO implements OrganizationDAO {
    …
    public State findStateByAbbrev(final String abbrev) {
        State ret = …

我正在使用JPA 2.0,Hibernate 4.1.0.Final,Spring 3.1.1.RELEASE和Java 1.6.我有这个实体与另一个实体的一对多关系......

import javax.persistence.CascadeType;
...
@Entity
@Table(name = "classroom")
public class Classroom implements Serializable
{
    ...

    @OneToMany(mappedBy = "classroom", cascade = {CascadeType.PERSIST, CascadeType.MERGE, CascadeType.REMOVE})
    private Set<ClassroomUser> roster;

但是,当我使用一组不同的ClassroomUser对象更新我的实体时

classroom.setRoster(newRoster);

并保存实体,保留所有以前的ClassroomUser对象.在从数据库中删除所有孤立记录时更新我的​​实体的正确/最短方法是什么？

谢谢, - 戴夫

我在OS X 10.9.1上使用MySQL 5.5.37.我有一个NOT NULL类型的列DATETIME.如果不使用触发器,如何阻止'0000-00-00 00:00:00'的值进入我的列？我会接受CURRENT_TIMESTAMP的值来代替所有的零.

我试过了:

SET sql_mode = 'NO_ZERO_DATE';

运行上面的内容后,我仍然可以在表格中插入零日期.

我正在使用Maven 3.0.3，Failsafe插件v2.17和JUnit 4.11。目前，我有一个集成测试，测试顺序如下

@RunWith(SpringJUnit4ClassRunner.class)
public class MyTests {

    @Test
    public final void testAdd() {
        …
    }

    @Test
    public final void testUpdate() {
        …
    }

    @Test
    public final void testDelete() {
        …
    }

目前，当我作为“ mvn全新安装”运行的一部分通过Maven运行测试时，在“ testAdd”或“ testUpdate”之前先运行“ testDelete”。如果我将名称更改为“ testZZZDelete”，那么它将最后运行，但我不喜欢这样。

如何使测试按照文件中指定的顺序运行？我的故障安全配置如下：

<plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-failsafe-plugin</artifactId>
        <version>2.17</version>
        <configuration>
                <reuseForks>true</reuseForks>
                <argLine>-Xmx4096m -XX:MaxPermSize=512M ${itCoverageAgent}</argLine>
        </configuration>
        <executions>
                <execution>
                        <goals>
                                <goal>integration-test</goal>
                                <goal>verify</goal>
                        </goals>
                </execution>
        </executions>
</plugin>

我正在使用Gradle 2.7，MySQL 5.5.46和Gradle Liquibase插件（v 1.1.1）。我在H2（v。1.4.190）内存数据库和MySql数据库上都运行LIquibase脚本。如何配置变更集，以便Liquibase可以在MySQL数据库上运行它，但是对于内存数据库则忽略它？我已经试过了

<preConditions>
    <dbms type="mysql" />
</preConditions>
<changeSet id="create_artifact_stored_proc" author="davea">
    <sqlFile endDelimiter="//" path="src/main/resources/scripts/create_artifact_stored_proc.sql" stripComments="true"/>
</changeSet>

但是，如果在H2数据库上运行此命令，则以上操作将失败（可预测），并显示以下错误：

liquibase.exception.ValidationFailedException: Validation Failed:
     1 preconditions failed
     src/main/resources/db.changelog-master.xml : DBMS Precondition failed: expected mysql, got h2

    at liquibase.changelog.DatabaseChangeLog.validate(DatabaseChangeLog.java:196)
    at liquibase.Liquibase.update(Liquibase.java:196)
    at liquibase.integration.commandline.Main.doMigration(Main.java:1044)
    at liquibase.integration.commandline.Main.run(Main.java:175)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
    at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.invoke(StaticMetaMethodSite.java:43)
    at org.codehaus.groovy.runtime.callsite.StaticMetaMethodSite.call(StaticMetaMethodSite.java:88)
    at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
    at org.liquibase.gradle.LiquibaseTask.runLiquibase(LiquibaseTask.groovy:97)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
    at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
    at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:382)
    at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1015) …

我正在使用Hamcrest 2.0.0.0并尝试使用Spring(v 3.2.11.RELEASE)的mockmvc框架来使用json-path匹配.我在JUnit(v 4.11)测试中有这个

    mockMvc.perform(get("/api/users/" + id))
        .andExpect(status().isOk())
        .andExpect(jsonPath("$.id", is(id)));

我有这些依赖...

    <dependency>
        <groupId>org.hamcrest</groupId>
        <artifactId>java-hamcrest</artifactId>
        <version>2.0.0.0</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>com.jayway.jsonpath</groupId>
        <artifactId>json-path</artifactId>
        <version>2.2.0</version>
    </dependency>

但我得到以下错误.使json-path匹配工作所需的正确依赖性/版本列表是什么？

java.lang.NoSuchMethodError: com.jayway.jsonpath.JsonPath.compile(Ljava/lang/String;[Lcom/jayway/jsonpath/Filter;)Lcom/jayway/jsonpath/JsonPath;
    at org.springframework.test.util.JsonPathExpectationsHelper.<init>(JsonPathExpectationsHelper.java:54)
    at org.springframework.test.web.servlet.result.JsonPathResultMatchers.<init>(JsonPathResultMatchers.java:43)
    at org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath(MockMvcResultMatchers.java:146)
    at org.springframework.security.oauth2.resources.ZincDataControllerIT.testGetInfoForTeacher(ZincDataControllerIT.java:83)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:497)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:88)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174) …

我正在使用Spring 3.2.11.RELEASE和Maven 3.3.我在我的应用程序上下文文件中定义了这个...

<bean id="localPropertyConfigurer"
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
     <property name="locations">
        <list>
            <value>classpath:quickbase.properties</value>
        </list>
        </property>
</bean> 
…
<bean id=“myClient" class="org.mainco.subco.mysystem.MyClient">
    <constructor-arg index="0" type="String" value="${quickbase.username}" />
    <constructor-arg index="1" type="String" value="${quickbase.password}" />
    <constructor-arg index="2" type="String" value="${quickbase.url}" />
</bean>

但是当我运行我的测试时,我得到以下错误

Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Invalid bean definition with name 'myClient' defined in class path resource [META-INF/spring/applicationContext-orders.xml]: Could not resolve placeholder 'quickbase.username' in string value "${quickbase.username}"; nested exception is java.lang.IllegalArgumentException: Could not resolve placeholder 'quickbase.username' in string value "${quickbase.username}"

这让我感到困惑,因为在我的target/classes目录中,我可以看到一个文件"quickbase.properties",它定义了"quickbase.username".我无法弄清楚我还需要检查什么.

我正在使用 Spring 4.3.8.RELEASE。在我的集成测试中，我使用的是 SPring 的 MockMvc 框架，设置如下......

@Autowired 
private WebApplicationContext wac;

private MockMvc mockMvc;
...
this.mockMvc = MockMvcBuilders.webAppContextSetup(wac).build();
...
    mockMvc.perform(get(contextPath + "/path") 
                    .contextPath(contextPath)
                    .principal(auth)
                    .param("param1", param1)
                    .param("param2", param2))

我无法弄清楚的是如何设置我的请求的服务器名称。也就是说，当我的控制器被调用时填充

final HttpServletRequest request

我如何设置

request.getServerName() 

来自 MockMvc 调用？

我想编写一个 Django 查询来计算表中所有行的平均值。我的模型看起来像

class StatByDow(models.Model):
    total_score = models.DecimalField(default=0, max_digits=12, decimal_places=2)
    num_articles = models.IntegerField(default=0)
    day_of_week = IntegerField(
        null=True,
        validators=[
            MaxValueValidator(6),
            MinValueValidator(0)
        ]
    )

我尝试像这样计算平均值

everything_avg = StatByDow.objects.all().aggregate(Avg(Func(F('total_score') / F('num_articles'))))

但这会导致错误

  File "/Users/davea/Documents/workspace/mainsite_project/venv/lib/python3.7/site-packages/django/db/models/query.py", line 362, in aggregate
    raise TypeError("Complex aggregates require an alias")
TypeError: Complex aggregates require an alias

计算平均值的正确方法是什么？