#35 springboot: importSelector

springboot/autoconfig/src/test/java/hello/selector/HelloBean.java

@@ -0,0 +1,4 @@
+package hello.selector;
+
+public class HelloBean {
+}

springboot/autoconfig/src/test/java/hello/selector/HelloConfig.java

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+package hello.selector;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class HelloConfig {
+
+    @Bean
+    public HelloBean helloBean() {
+        return new HelloBean();
+    }
+}

springboot/autoconfig/src/test/java/hello/selector/HelloImportSelector.java

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+package hello.selector;
+
+import org.springframework.context.annotation.ImportSelector;
+import org.springframework.core.type.AnnotationMetadata;
+
+public class HelloImportSelector implements ImportSelector {
+    @Override
+    public String[] selectImports(AnnotationMetadata importingClassMetadata) {
+        return new String[]{"hello.selector.HelloConfig"};
+    }
+}

springboot/autoconfig/src/test/java/hello/selector/ImportSelectorTest.java

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+package hello.selector;
+
+import org.assertj.core.api.Assertions;
+import org.junit.jupiter.api.Test;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+
+import static org.assertj.core.api.Assertions.*;
+
+public class ImportSelectorTest {
+
+    @Test
+    void staticConfig() {
+        AnnotationConfigApplicationContext appContext =
+                new AnnotationConfigApplicationContext(HelloConfig.class);
+        HelloBean bean = appContext.getBean(HelloBean.class);
+        assertThat(bean).isNotNull();
+    }
+
+    @Test
+    void selectorConfig() {
+        AnnotationConfigApplicationContext appContext =
+                new AnnotationConfigApplicationContext(SelectorConfig.class);
+        HelloBean bean = appContext.getBean(HelloBean.class);
+        assertThat(bean).isNotNull();
+    }
+
+    @Configuration
+    @Import(HelloConfig.class)
+    public static class StaticConfig {
+
+    }
+
+    @Configuration
+    @Import(HelloImportSelector.class)
+    public static class SelectorConfig {
+
+    }
+}