feature:support support inject environment variable during test.

spring-cloud-tencent-commons/src/main/java/com/tencent/cloud/common/metadata/StaticMetadataManager.java

@@ -107,7 +107,8 @@ public class StaticMetadataManager {
 			String value = entry.getValue();
 			if (StringUtils.isNotBlank(key)
 					&& (key.startsWith(ENV_METADATA_PREFIX) || key.equals(ENV_TRAFFIC_CONTENT_RAW_TRANSHEADERS))
-					&& !key.equals(ENV_METADATA_CONTENT_TRANSITIVE)) {
+					&& !key.equals(ENV_METADATA_CONTENT_TRANSITIVE)
+					&& !key.equals(ENV_METADATA_CONTENT_DISPOSABLE)) {
 				String sourceKey = "";
 				if (key.equals(ENV_TRAFFIC_CONTENT_RAW_TRANSHEADERS)) {
 					sourceKey = key;

spring-cloud-tencent-commons/src/test/java/com/tencent/cloud/common/metadata/StaticMetadataManagerTest.java

@@ -23,7 +23,6 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
 import java.util.Set;
-import java.util.concurrent.locks.Lock;
 
 import com.tencent.cloud.common.metadata.config.MetadataLocalProperties;
 import com.tencent.cloud.common.spi.InstanceMetadataProvider;
@@ -34,9 +33,6 @@ import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
 import org.mockito.Mock;
-import org.mockito.junit.MockitoJUnitRunner;
-
-import org.springframework.util.CollectionUtils;
 
 import static org.mockito.Mockito.when;
 
@@ -47,13 +43,12 @@ import static org.mockito.Mockito.when;
  * @author lepdou 2022-06-27
  */
 @RunWith(EnvironmentVariableInjectedRunner.class)
-@EnvironmentVariables(
+@EnvironmentVariables({
-		value = {
+		@EnvironmentVariable(name = "SCT_METADATA_CONTENT_TRANSITIVE", value = "transitiveKey"),
-				@EnvironmentVariable(name = "SCT_METADATA_CONTENT_TRANSITIVE", value = "tkey1,tkey2,tkey3"),
+		@EnvironmentVariable(name = "SCT_METADATA_CONTENT_DISPOSABLE", value = "disposableKey"),
-				@EnvironmentVariable(name = "SCT_METADATA_CONTENT_DISPOSABLE", value = "dkey1,dkey2,dkey3"),
+		@EnvironmentVariable(name = "SCT_METADATA_CONTENT_transitiveKey", value = "transitiveValue"),
-				@EnvironmentVariable(name = "SCT_METADATA_CONTENT_KEY", value = "key")
+		@EnvironmentVariable(name = "SCT_METADATA_CONTENT_disposableKey", value = "disposableValue"),
-		}
+		@EnvironmentVariable(name = "SCT_TRAFFIC_CONTENT_RAW_TRANSHEADERS", value = "header1,header2,header3")})
-)
 public class StaticMetadataManagerTest {
 
 	@Mock
@@ -135,22 +130,19 @@ public class StaticMetadataManagerTest {
 				new MockedMetadataProvider());
 
 		Map<String, String> metadata = metadataManager.getMergedStaticMetadata();
-		Assert.assertEquals(6, metadata.size());
+		Assert.assertEquals(8, metadata.size());
 		Assert.assertEquals("v1", metadata.get("k1"));
 		Assert.assertEquals("v22", metadata.get("k2"));
 		Assert.assertEquals("v33", metadata.get("k3"));
 
 		Map<String, String> transitiveMetadata = metadataManager.getMergedStaticTransitiveMetadata();
-		Assert.assertEquals(2, transitiveMetadata.size());
+		Assert.assertEquals(3, transitiveMetadata.size());
 		Assert.assertEquals("v1", metadata.get("k1"));
 		Assert.assertEquals("v22", metadata.get("k2"));
 
 		Assert.assertEquals("zone2", metadataManager.getZone());
 		Assert.assertEquals("region1", metadataManager.getRegion());
 
-		Assert.assertTrue(CollectionUtils.isEmpty(metadataManager.getAllEnvMetadata()));
-		Assert.assertTrue(CollectionUtils.isEmpty(metadataManager.getEnvTransitiveMetadata()));
-
 		Map<String, String> locationInfo = metadataManager.getLocationMetadata();
 		Assert.assertEquals("zone2", locationInfo.get("zone"));
 		Assert.assertEquals("region1", locationInfo.get("region"));
@@ -158,6 +150,25 @@ public class StaticMetadataManagerTest {
 
 	}
 
+	@Test
+	public void testEnvMetadata() {
+		StaticMetadataManager metadataManager = new StaticMetadataManager(metadataLocalProperties, null);
+		Map<String, String> allEnvMetadata = metadataManager.getAllEnvMetadata();
+		Assert.assertTrue(allEnvMetadata.containsKey("transitiveKey"));
+		Assert.assertTrue(allEnvMetadata.containsKey("disposableKey"));
+
+		Map<String, String> envDisposableMetadata = metadataManager.getEnvDisposableMetadata();
+		Assert.assertTrue(envDisposableMetadata.containsKey("disposableKey"));
+		Assert.assertEquals(envDisposableMetadata.get("disposableKey"), "disposableValue");
+
+		Map<String, String> envTransitiveMetadata = metadataManager.getEnvTransitiveMetadata();
+		Assert.assertTrue(envTransitiveMetadata.containsKey("transitiveKey"));
+		Assert.assertEquals(envTransitiveMetadata.get("transitiveKey"), "transitiveValue");
+
+		String transHeaderFromEnv = metadataManager.getTransHeaderFromEnv();
+		Assert.assertEquals(transHeaderFromEnv, "header1,header2,header3");
+	}
+
 	static class MockedMetadataProvider implements InstanceMetadataProvider {
 
 		@Override

spring-cloud-tencent-commons/src/test/java/com/tencent/cloud/common/support/EnvironmentVariableInjectedRunner.java

@@ -23,6 +23,7 @@ import java.util.Objects;
 
 import org.junit.Rule;
 import org.junit.runners.model.InitializationError;
+
 import org.springframework.core.annotation.AnnotationUtils;
 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;