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-rw-r--r--api/src/test/java/io/opencensus/common/FunctionsTest.java3
1 files changed, 3 insertions, 0 deletions
diff --git a/api/src/test/java/io/opencensus/common/FunctionsTest.java b/api/src/test/java/io/opencensus/common/FunctionsTest.java
index 1c8df819..2ab1ebca 100644
--- a/api/src/test/java/io/opencensus/common/FunctionsTest.java
+++ b/api/src/test/java/io/opencensus/common/FunctionsTest.java
@@ -18,8 +18,11 @@ import static com.google.common.truth.Truth.assertThat;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
+import org.junit.runner.RunWith;
+import org.junit.runners.JUnit4;
/** Tests for {@link Functions}. */
+@RunWith(JUnit4.class)
public class FunctionsTest {
@Rule public ExpectedException thrown = ExpectedException.none();