Deprecate EnvironmentTestUtils in favor of TestPropertyValues

Fixes gh-9253

spring-boot-test/src/test/java/org/springframework/boot/test/util/TestPropertyValuesTests.java

@@ -0,0 +1,90 @@
+/*
+ * Copyright 2012-2017 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.test.util;
+
+import org.junit.Test;
+
+import org.springframework.boot.test.util.TestPropertyValues.Type;
+import org.springframework.core.env.ConfigurableEnvironment;
+import org.springframework.core.env.PropertySource;
+import org.springframework.core.env.StandardEnvironment;
+import org.springframework.core.env.SystemEnvironmentPropertySource;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link TestPropertyValues}.
+ *
+ * @author Madhura Bhave
+ */
+public class TestPropertyValuesTests {
+
+	private final ConfigurableEnvironment environment = new StandardEnvironment();
+
+	@Test
+	public void applyToEnvironmentShouldAttachConfigurationPropertySource() throws Exception {
+		TestPropertyValues.of("foo.bar=baz").applyTo(this.environment);
+		PropertySource<?> source = this.environment.getPropertySources().get("configurationProperties");
+		assertThat(source).isNotNull();
+	}
+
+	@Test
+	public void applyToDefaultPropertySource() throws Exception {
+		TestPropertyValues.of("foo.bar=baz", "hello.world=hi").applyTo(this.environment);
+		assertThat(this.environment.getProperty("foo.bar")).isEqualTo("baz");
+		assertThat(this.environment.getProperty("hello.world")).isEqualTo("hi");
+	}
+
+	@Test
+	public void applyToSystemPropertySource() throws Exception {
+		TestPropertyValues.of("FOO_BAR=BAZ").applyTo(this.environment, Type.SYSTEM);
+		assertThat(this.environment.getProperty("foo.bar")).isEqualTo("BAZ");
+	}
+
+	@Test
+	public void applyToWithSpecificName() throws Exception {
+		TestPropertyValues.of("foo.bar=baz").applyTo(this.environment, Type.MAP, "other");
+		assertThat(this.environment.getPropertySources().get("other")).isNotNull();
+		assertThat(this.environment.getProperty("foo.bar")).isEqualTo("baz");
+	}
+
+	@Test
+	public void applyToExistingNameAndDifferentTypeShouldOverrideExistingOne() throws Exception {
+		TestPropertyValues.of("foo.bar=baz", "hello.world=hi").applyTo(this.environment, Type.MAP, "other");
+		TestPropertyValues.of("FOO_BAR=BAZ").applyTo(this.environment, Type.SYSTEM, "other");
+		assertThat(this.environment.getPropertySources().get("other")).isInstanceOf(SystemEnvironmentPropertySource.class);
+		assertThat(this.environment.getProperty("foo.bar")).isEqualTo("BAZ");
+		assertThat(this.environment.getProperty("hello.world")).isNull();
+	}
+
+	@Test
+	public void applyToExistingNameAndSameTypeShouldMerge() throws Exception {
+		TestPropertyValues.of("foo.bar=baz", "hello.world=hi").applyTo(this.environment, Type.MAP);
+		TestPropertyValues.of("foo.bar=new").applyTo(this.environment, Type.MAP);
+		assertThat(this.environment.getProperty("foo.bar")).isEqualTo("new");
+		assertThat(this.environment.getProperty("hello.world")).isEqualTo("hi");
+	}
+
+	@Test
+	public void andShouldChainAndAddSingleKeyValue() throws Exception {
+		TestPropertyValues.of("foo.bar=baz").and("hello.world", "hi").and("bling.blah", "bing")
+				.applyTo(this.environment, Type.MAP);
+		assertThat(this.environment.getProperty("foo.bar")).isEqualTo("baz");
+		assertThat(this.environment.getProperty("hello.world")).isEqualTo("hi");
+		assertThat(this.environment.getProperty("bling.blah")).isEqualTo("bing");
+	}
+}