Add the o.s.b.d.g.core.utils.ObjectUtils utility class containing various operations on Objects.

geode-spring-boot-starter/src/test/java/org/springframework/boot/data/geode/core/util/ObjectUtilsUnitTests.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2018 the original author or authors.
+ *
+ * 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.springframework.boot.data.geode.core.util;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.data.gemfire.util.RuntimeExceptionFactory.newRuntimeException;
+
+import org.junit.Test;
+
+/**
+ * Unit tests for {@link ObjectUtils}.
+ *
+ * @author John Blum
+ * @see org.junit.Test
+ * @since 1.0.0
+ */
+public class ObjectUtilsUnitTests {
+
+	@Test
+	public void doOperationSafelyReturnsResult() {
+		assertThat(ObjectUtils.doOperationSafely(() -> "test")).isEqualTo("test");
+	}
+
+	@Test
+	public void doOperationSafelyReturnsDefaultValue() {
+		assertThat(ObjectUtils.doOperationSafely(() -> { throw newRuntimeException("test"); },
+			"default value")).isEqualTo("default value");
+	}
+
+	@Test(expected = IllegalStateException.class)
+	public void doOperationSafelyThrowsIllegalStateException() {
+
+		try {
+			ObjectUtils.doOperationSafely(() -> { throw newRuntimeException("test"); }, null);
+		}
+		catch (IllegalStateException expected) {
+
+			assertThat(expected).hasMessage("Failed to execute operation");
+			assertThat(expected).hasCauseInstanceOf(RuntimeException.class);
+			assertThat(expected.getCause()).hasMessage("test");
+			assertThat(expected.getCause()).hasNoCause();
+
+			throw expected;
+		}
+	}
+
+	@Test
+	public void returnValueThrowOnNullWithNonNullValueReturnsValue() {
+		assertThat(ObjectUtils.returnValueThrowOnNull("test")).isEqualTo("test");
+	}
+
+	@Test(expected = RuntimeException.class)
+	public void returnValueThrowOnNullWithNullValueThrowsException() {
+
+		try {
+			ObjectUtils.returnValueThrowOnNull(null, newRuntimeException("test"));
+		}
+		catch (RuntimeException expected) {
+
+			assertThat(expected).hasMessage("test");
+			assertThat(expected).hasNoCause();
+
+			throw expected;
+		}
+	}
+}