Add Integration Tests for the Inline Caching Sample, Spring Boot application.

spring-geode-samples/caching/inline/src/test/java/example/app/caching/inline/CalculatorApplicationIntegrationTests.java

@@ -0,0 +1,133 @@
+/*
+ * Copyright 2019 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
+ *
+ *     https://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 example.app.caching.inline;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import javax.annotation.Resource;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.apache.geode.cache.Region;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.data.gemfire.tests.integration.IntegrationTestsSupport;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import example.app.caching.inline.model.Operator;
+import example.app.caching.inline.model.ResultHolder;
+import example.app.caching.inline.repo.CalculatorRepository;
+import example.app.caching.inline.service.CalculatorService;
+
+/**
+ * Integration Tests for Calculator Application.
+ *
+ * @author John Blum
+ * @see org.junit.Test
+ * @see org.apache.geode.cache.Region
+ * @see org.springframework.boot.test.context.SpringBootTest
+ * @see org.springframework.data.gemfire.tests.integration.IntegrationTestsSupport
+ * @see org.springframework.test.context.junit4.SpringRunner
+ * @see example.app.caching.inline.model.ResultHolder
+ * @see example.app.caching.inline.repo.CalculatorRepository
+ * @see example.app.caching.inline.service.CalculatorService
+ * @since 1.1.0
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class CalculatorApplicationIntegrationTests extends IntegrationTestsSupport {
+
+	private static final AtomicBoolean runOnce = new AtomicBoolean(false);
+
+	@Autowired
+	private CalculatorRepository calculatorRepository;
+
+	@Autowired
+	private CalculatorService calculatorService;
+
+	@Resource(name = "Factorials")
+	private Region<Object, Object> factorials;
+
+	@Resource(name = "SquareRoots")
+	private Region<Object, Object> squareRoots;
+
+	@Before
+	public void setup() {
+
+		if (runOnce.compareAndSet(false, true)) {
+
+			assertThat(this.factorials).isNotNull();
+			assertThat(this.factorials.getName()).isEqualTo("Factorials");
+			assertThat(this.squareRoots).isNotNull();
+			assertThat(this.squareRoots.getName()).isEqualTo("SquareRoots");
+
+			Iterable<ResultHolder> calculations = calculatorRepository.findAll();
+
+			assertThat(calculations).isNotNull();
+			assertThat(calculations).hasSize(6);
+			assertThat(calculations).containsExactly(
+				ResultHolder.of(5, Operator.FACTORIAL, 120),
+				ResultHolder.of(7, Operator.FACTORIAL, 5040),
+				ResultHolder.of(9, Operator.FACTORIAL, 362880),
+				ResultHolder.of(16, Operator.SQUARE_ROOT, 4),
+				ResultHolder.of(64, Operator.SQUARE_ROOT, 8),
+				ResultHolder.of(256, Operator.SQUARE_ROOT, 16)
+			);
+		}
+	}
+
+	@Test
+	public void cacheMissForExistingValueLoadsFromDatabase() {
+
+		Object key = ResultHolder.ResultKey.of(7, Operator.FACTORIAL);
+
+		assertThat(this.factorials).doesNotContainKey(key);
+		assertThat(this.calculatorRepository.findByOperandEqualsAndOperatorEquals(7, Operator.FACTORIAL)
+			.isPresent()).isTrue();
+		assertThat(this.calculatorService.isCacheMiss()).isFalse();
+
+		ResultHolder factorialOfSeven = this.calculatorService.factorial(7);
+
+		assertThat(factorialOfSeven).isNotNull();
+		assertThat(factorialOfSeven.getResult()).isEqualTo(5040);
+		assertThat(this.factorials).containsKey(key);
+		assertThat(this.calculatorService.isCacheHit()).isTrue();
+	}
+
+	@Test
+	public void cacheMissForNonExistingValueInvokesServiceMethodPutsIntoCacheAndSavesToDatabase() {
+
+		Object key = ResultHolder.ResultKey.of(25, Operator.SQUARE_ROOT);
+
+		assertThat(this.squareRoots).doesNotContainKey(key);
+		assertThat(this.calculatorRepository.findByOperandEqualsAndOperatorEquals(25, Operator.SQUARE_ROOT)
+			.isPresent()).isFalse();
+		assertThat(this.calculatorService.isCacheMiss()).isFalse();
+
+		ResultHolder squareRootOfTwentyFive = this.calculatorService.sqrt(25);
+
+		assertThat(squareRootOfTwentyFive.getResult()).isEqualTo(5);
+		assertThat(this.squareRoots).containsKey(key);
+		assertThat(this.calculatorRepository.findByOperandEqualsAndOperatorEquals(25, Operator.SQUARE_ROOT)
+			.isPresent()).isTrue();
+		assertThat(this.calculatorService.isCacheMiss()).isTrue();
+	}
+}