add nested property test

apollo-client/src/test/java/com/ctrip/framework/apollo/spring/JavaConfigPlaceholderTest.java

@@ -153,6 +153,112 @@ public class JavaConfigPlaceholderTest extends AbstractSpringIntegrationTest {
     assertEquals(someBatch, bean.getBatch());
   }
 
+  @Test
+  public void testNestedProperty() throws Exception {
+    String a = "a";
+    String b = "b";
+    int someValue = 1234;
+
+    Config config = mock(Config.class);
+    when(config.getProperty(eq(a), anyString())).thenReturn(a);
+    when(config.getProperty(eq(b), anyString())).thenReturn(b);
+    when(config.getProperty(eq(String.format("%s.%s", a, b)), anyString()))
+        .thenReturn(String.valueOf(someValue));
+
+    mockConfig(ConfigConsts.NAMESPACE_APPLICATION, config);
+
+    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(NestedPropertyConfig1.class);
+
+    TestNestedPropertyBean bean = context.getBean(TestNestedPropertyBean.class);
+
+    assertEquals(someValue, bean.getNestedProperty());
+  }
+
+  @Test
+  public void testNestedPropertyWithDefaultValue() throws Exception {
+    String a = "a";
+    String b = "b";
+    String c = "c";
+    int someValue = 1234;
+
+    Config config = mock(Config.class);
+    when(config.getProperty(eq(a), anyString())).thenReturn(a);
+    when(config.getProperty(eq(b), anyString())).thenReturn(b);
+    when(config.getProperty(eq(c), anyString())).thenReturn(String.valueOf(someValue));
+
+    mockConfig(ConfigConsts.NAMESPACE_APPLICATION, config);
+
+    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(NestedPropertyConfig1.class);
+
+    TestNestedPropertyBean bean = context.getBean(TestNestedPropertyBean.class);
+
+    assertEquals(someValue, bean.getNestedProperty());
+  }
+
+  @Test
+  public void testNestedPropertyWithNestedDefaultValue() throws Exception {
+    String a = "a";
+    String b = "b";
+
+    Config config = mock(Config.class);
+    when(config.getProperty(eq(a), anyString())).thenReturn(a);
+    when(config.getProperty(eq(b), anyString())).thenReturn(b);
+
+    mockConfig(ConfigConsts.NAMESPACE_APPLICATION, config);
+
+    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(NestedPropertyConfig1.class);
+
+    TestNestedPropertyBean bean = context.getBean(TestNestedPropertyBean.class);
+
+    assertEquals(100, bean.getNestedProperty());
+  }
+
+  @Test
+  public void testMultipleNestedProperty() throws Exception {
+    String a = "a";
+    String b = "b";
+    String nestedKey = "c.d";
+    String nestedProperty = String.format("${%s}", nestedKey);
+    int someValue = 1234;
+
+    Config config = mock(Config.class);
+    when(config.getProperty(eq(a), anyString())).thenReturn(a);
+    when(config.getProperty(eq(b), anyString())).thenReturn(b);
+    when(config.getProperty(eq(String.format("%s.%s", a, b)), anyString())).thenReturn(nestedProperty);
+    when(config.getProperty(eq(nestedKey), anyString())).thenReturn(String.valueOf(someValue));
+
+    mockConfig(ConfigConsts.NAMESPACE_APPLICATION, config);
+
+    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(NestedPropertyConfig1.class);
+
+    TestNestedPropertyBean bean = context.getBean(TestNestedPropertyBean.class);
+
+    assertEquals(someValue, bean.getNestedProperty());
+  }
+
+  @Test
+  public void testMultipleNestedPropertyWithDefaultValue() throws Exception {
+    String a = "a";
+    String b = "b";
+    String nestedKey = "c.d";
+    int someValue = 1234;
+    String nestedProperty = String.format("${%s:%d}", nestedKey, someValue);
+
+    Config config = mock(Config.class);
+    when(config.getProperty(eq(a), anyString())).thenReturn(a);
+    when(config.getProperty(eq(b), anyString())).thenReturn(b);
+    when(config.getProperty(eq(String.format("%s.%s", a, b)), anyString())).thenReturn(nestedProperty);
+
+    mockConfig(ConfigConsts.NAMESPACE_APPLICATION, config);
+
+    AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(NestedPropertyConfig1.class);
+
+    TestNestedPropertyBean bean = context.getBean(TestNestedPropertyBean.class);
+
+    assertEquals(someValue, bean.getNestedProperty());
+  }
+
+
   private void check(int expectedTimeout, int expectedBatch, Class<?>... annotatedClasses) {
     AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(annotatedClasses);
 
@@ -217,6 +323,16 @@ public class JavaConfigPlaceholderTest extends AbstractSpringIntegrationTest {
     }
   }
 
+  @Configuration
+  @EnableApolloConfig
+  static class NestedPropertyConfig1 {
+    @Bean
+    TestNestedPropertyBean testNestedPropertyBean() {
+      return new TestNestedPropertyBean();
+    }
+  }
+
+
   @Component
   static class TestJavaConfigBean {
     @Value("${timeout:100}")
@@ -257,4 +373,15 @@ public class JavaConfigPlaceholderTest extends AbstractSpringIntegrationTest {
       this.batch = batch;
     }
   }
+
+  static class TestNestedPropertyBean {
+
+    @Value("${${a}.${b}:${c:100}}")
+    private int nestedProperty;
+
+    public int getNestedProperty() {
+      return nestedProperty;
+    }
+  }
+
 }