test: enhance test coverage of seata common

common/src/test/java/org/apache/seata/common/exception/RepeatRegistrationExceptionTest.java

@@ -0,0 +1,40 @@
+/*
+ *  Copyright 1999-2019 Seata.io Group.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  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 org.apache.seata.common.exception;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertAll;
+import static org.junit.jupiter.api.Assertions.assertThrowsExactly;
+
+
+class RepeatRegistrationExceptionTest {
+
+    @Test
+    void testRepeatRegistrationException() {
+        assertAll(
+                () -> assertThrowsExactly(RepeatRegistrationException.class, () -> {
+                    throw new RepeatRegistrationException("error");
+                }),
+                () -> assertThrowsExactly(RepeatRegistrationException.class, () -> {
+                    throw new RepeatRegistrationException("error", new Throwable("error"));
+                }),
+                () -> assertThrowsExactly(RepeatRegistrationException.class, () -> {
+                    throw new RepeatRegistrationException(new Throwable("error"));
+                })
+        );
+    }
+}

common/src/test/java/org/apache/seata/common/exception/SkipCallbackWrapperExceptionTest.java

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+/*
+ *  Copyright 1999-2019 Seata.io Group.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  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 org.apache.seata.common.exception;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.junit.jupiter.api.Assertions.assertThrowsExactly;
+
+class SkipCallbackWrapperExceptionTest {
+
+    @Test
+    void testSkipCallbackWrapperException() {
+        assertThrowsExactly(SkipCallbackWrapperException.class, () -> {
+            throw new SkipCallbackWrapperException(new Throwable("error"));
+        });
+
+    }
+
+    @Test
+    void testFillInStackTrace() {
+        SkipCallbackWrapperException skipCallbackWrapperException = new SkipCallbackWrapperException(new Throwable("error"));
+        assertNull(skipCallbackWrapperException.fillInStackTrace());
+
+    }
+}

common/src/test/java/org/apache/seata/common/util/LambdaUtilsTest.java

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+/*
+ *  Copyright 1999-2019 Seata.io Group.
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *       http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  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 org.apache.seata.common.util;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.function.Function;
+import java.util.function.Predicate;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class LambdaUtilsTest {
+
+    @Test
+    void shouldReturnTrueForDistinctKeys() {
+        Function<Object, Object> keyExtractor = Object::getClass;
+        Predicate<Object> distinctByKey = LambdaUtils.distinctByKey(keyExtractor);
+
+        boolean result = distinctByKey.test(new Object());
+        assertTrue(result);
+    }
+}