fix

Author: zeitlinger

javaagent-tooling/build.gradle.kts

@@ -113,6 +113,14 @@ testing {
         compileOnly("com.google.code.findbugs:annotations")
       }
     }
+
+    val testConfigFile by registering(JvmTestSuite::class) {
+      dependencies {
+        implementation(project(":javaagent-tooling"))
+        // requires mockito-inline
+        implementation("uk.org.webcompere:system-stubs-jupiter")
+      }
+    }
   }
 }
 

javaagent-tooling/src/test/java/io/opentelemetry/javaagent/tooling/config/ConfigurationFileTest.java renamed to javaagent-tooling/src/testConfigFile/java/io/opentelemetry/javaagent/tooling/config/ConfigurationFileTest.java

@@ -14,18 +14,23 @@
 import java.nio.charset.StandardCharsets;
 import java.nio.file.Files;
 import java.util.Map;
-import org.junit.Rule;
-import org.junit.contrib.java.lang.system.EnvironmentVariables;
 import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
 import org.junit.jupiter.api.io.TempDir;
 import org.junitpioneer.jupiter.ClearSystemProperty;
+import uk.org.webcompere.systemstubs.environment.EnvironmentVariables;
+import uk.org.webcompere.systemstubs.jupiter.SystemStub;
+import uk.org.webcompere.systemstubs.jupiter.SystemStubsExtension;
 
+@ExtendWith(SystemStubsExtension.class)
 @ClearSystemProperty(key = "otel.javaagent.configuration-file")
 class ConfigurationFileTest {
 
   @TempDir File tmpDir;
 
-  @Rule public EnvironmentVariables environmentVariables = new EnvironmentVariables();
+  @SystemStub private EnvironmentVariables environmentVariables;
+
+//  @SystemStub private SystemProperties systemProperties;
 
   @Test
   void shouldUseEnvVar() throws IOException {