feature:support inject environment variable during test running.

spring-cloud-tencent-commons/pom.xml

@@ -99,6 +99,12 @@
 			<artifactId>spring-boot-actuator-autoconfigure</artifactId>
 			<optional>true</optional>
 		</dependency>
+
+		<dependency>
+			<groupId>com.github.stefanbirkner</groupId>
+			<artifactId>system-rules</artifactId>
+			<optional>true</optional>
+		</dependency>
 	</dependencies>
 
 </project>

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

@@ -23,9 +23,13 @@ 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;
+import com.tencent.cloud.common.support.EnvironmentVariable;
+import com.tencent.cloud.common.support.EnvironmentVariableInjectedRunner;
+import com.tencent.cloud.common.support.EnvironmentVariables;
 import org.junit.Assert;
 import org.junit.Test;
 import org.junit.runner.RunWith;
@@ -42,7 +46,14 @@ import static org.mockito.Mockito.when;
  *
  * @author lepdou 2022-06-27
  */
-@RunWith(MockitoJUnitRunner.class)
+@RunWith(EnvironmentVariableInjectedRunner.class)
+@EnvironmentVariables(
+		value = {
+				@EnvironmentVariable(name = "SCT_METADATA_CONTENT_TRANSITIVE", value = "tkey1,tkey2,tkey3"),
+				@EnvironmentVariable(name = "SCT_METADATA_CONTENT_DISPOSABLE", value = "dkey1,dkey2,dkey3"),
+				@EnvironmentVariable(name = "SCT_METADATA_CONTENT_KEY", value = "key")
+		}
+)
 public class StaticMetadataManagerTest {
 
 	@Mock

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

@@ -0,0 +1,48 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed
+ * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ */
+
+package com.tencent.cloud.common.support;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Repeatable;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * @author lingxiao.wlx
+ */
+@Repeatable(EnvironmentVariables.class)
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.TYPE})
+public @interface EnvironmentVariable {
+
+	/**
+	 * EnvironmentVariable name.
+	 *
+	 * @return EnvironmentVariable name
+	 */
+	String name();
+
+	/**
+	 * EnvironmentVariable value.
+	 *
+	 * @return EnvironmentVariable value.
+	 */
+	String value();
+}

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

@@ -0,0 +1,71 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed
+ * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ */
+
+package com.tencent.cloud.common.support;
+
+import java.util.Arrays;
+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;
+
+/**
+ * Enhance {@link SpringJUnit4ClassRunner} to support inject environment variable during test running.
+ * <p>
+ * typical usage idiom for this class would be:
+ * <pre> {@code
+ * @RunWith(EnvironmentVariableInjectedRunner.class)
+ * @EnvironmentVariable(name = "name",value = "value")
+ * public class Test {
+ * }
+ * }</pre>
+ *
+ * @author lingxiao.wlx
+ * @see EnvironmentVariable
+ * @see EnvironmentVariables
+ */
+public class EnvironmentVariableInjectedRunner extends SpringJUnit4ClassRunner {
+
+	@Rule
+	private final org.junit.contrib.java.lang.system.EnvironmentVariables injectedEnvironmentVariables
+			= new org.junit.contrib.java.lang.system.EnvironmentVariables();
+
+	public EnvironmentVariableInjectedRunner(Class<?> clazz) throws InitializationError {
+		super(clazz);
+		EnvironmentVariable environmentVariable = AnnotationUtils.findAnnotation(clazz, EnvironmentVariable.class);
+		if (!Objects.isNull(environmentVariable)) {
+			injectEnvironmentVariable(environmentVariable);
+		}
+		EnvironmentVariables environmentVariables = AnnotationUtils.findAnnotation(clazz, EnvironmentVariables.class);
+		if (!Objects.isNull(environmentVariables)) {
+			injectEnvironmentVariables(environmentVariables);
+		}
+	}
+
+	private void injectEnvironmentVariables(EnvironmentVariables environmentVariables) {
+		Arrays.stream(environmentVariables.value()).forEach(
+				this::injectEnvironmentVariable
+		);
+	}
+
+	private void injectEnvironmentVariable(EnvironmentVariable environmentVariable) {
+		injectedEnvironmentVariables.set(environmentVariable.name(), environmentVariable.value());
+	}
+}

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

@@ -0,0 +1,34 @@
+/*
+ * Tencent is pleased to support the open source community by making Spring Cloud Tencent available.
+ *
+ * Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
+ *
+ * Licensed under the BSD 3-Clause License (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * https://opensource.org/licenses/BSD-3-Clause
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed
+ * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+ * CONDITIONS OF ANY KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations under the License.
+ *
+ */
+
+package com.tencent.cloud.common.support;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+/**
+ * @author lingxiao.wlx
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface EnvironmentVariables {
+
+	EnvironmentVariable[] value();
+}

spring-cloud-tencent-dependencies/pom.xml

@@ -80,6 +80,7 @@
 		<byte-buddy.version>1.12.10</byte-buddy.version>
 		<protobuf-java.version>3.16.1</protobuf-java.version>
 		<bcprov-jdk15on.version>1.69</bcprov-jdk15on.version>
+		<system-rules.version>1.16.1</system-rules.version>
 
 		<!-- Maven Plugin Versions -->
 		<maven-source-plugin.version>3.2.0</maven-source-plugin.version>
@@ -248,6 +249,13 @@
 				<version>${mocktio.version}</version>
 				<scope>test</scope>
 			</dependency>
+
+			<dependency>
+				<groupId>com.github.stefanbirkner</groupId>
+				<artifactId>system-rules</artifactId>
+				<version>${system-rules.version}</version>
+				<scope>test</scope>
+			</dependency>
 		</dependencies>
 	</dependencyManagement>