Fix placeholder support in <springProfile>'s name attribute

Closes gh-13450

Author: wilkinsona

spring-boot/src/main/java/org/springframework/boot/logging/logback/SpringProfileAction.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2012-2015 the original author or authors.
+ * Copyright 2012-2018 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.
@@ -69,14 +69,13 @@ public void begin(InterpretationContext ic, String name, Attributes attributes)
 	private boolean acceptsProfiles(InterpretationContext ic, Attributes attributes) {
 		String[] profileNames = StringUtils.trimArrayElements(StringUtils
 				.commaDelimitedListToStringArray(attributes.getValue(NAME_ATTRIBUTE)));
-		if (profileNames.length != 0) {
-			for (String profileName : profileNames) {
-				OptionHelper.substVars(profileName, ic, this.context);
-			}
-			return this.environment != null
-					&& this.environment.acceptsProfiles(profileNames);
+		if (this.environment == null || profileNames.length == 0) {
+			return false;
 		}
-		return false;
+		for (int i = 0; i < profileNames.length; i++) {
+			profileNames[i] = OptionHelper.substVars(profileNames[i], ic, this.context);
+		}
+		return this.environment.acceptsProfiles(profileNames);
 	}
 
 	@Override

spring-boot/src/test/java/org/springframework/boot/logging/logback/SpringProfileActionTests.java

@@ -0,0 +1,93 @@
+/*
+ * Copyright 2012-2018 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.logging.logback;
+
+import ch.qos.logback.core.Context;
+import ch.qos.logback.core.ContextBase;
+import ch.qos.logback.core.joran.action.Action;
+import ch.qos.logback.core.joran.spi.ActionException;
+import ch.qos.logback.core.joran.spi.InterpretationContext;
+import org.junit.Before;
+import org.junit.Test;
+import org.xml.sax.Attributes;
+
+import org.springframework.core.env.Environment;
+
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+/**
+ * Tests for {@link SpringProfileAction}.
+ *
+ * @author Andy Wilkinson
+ */
+public class SpringProfileActionTests {
+
+	private final Environment environment = mock(Environment.class);
+
+	private final SpringProfileAction action = new SpringProfileAction(this.environment);
+
+	private final Context context = new ContextBase();
+
+	private final InterpretationContext interpretationContext = new InterpretationContext(
+			this.context, null);
+
+	private final Attributes attributes = mock(Attributes.class);
+
+	@Before
+	public void setUp() {
+		this.action.setContext(this.context);
+	}
+
+	@Test
+	public void environmentIsQueriedWithProfileFromNameAttribute()
+			throws ActionException {
+		given(this.attributes.getValue(Action.NAME_ATTRIBUTE)).willReturn("dev");
+		this.action.begin(this.interpretationContext, null, this.attributes);
+		verify(this.environment).acceptsProfiles("dev");
+	}
+
+	@Test
+	public void environmentIsQueriedWithMultipleProfilesFromCommaSeparatedNameAttribute()
+			throws ActionException {
+		given(this.attributes.getValue(Action.NAME_ATTRIBUTE)).willReturn("dev,qa");
+		this.action.begin(this.interpretationContext, null, this.attributes);
+		verify(this.environment).acceptsProfiles("dev", "qa");
+	}
+
+	@Test
+	public void environmentIsQueriedWithResolvedValueWhenNameAttributeUsesAPlaceholder()
+			throws ActionException {
+		given(this.attributes.getValue(Action.NAME_ATTRIBUTE)).willReturn("${profile}");
+		this.context.putProperty("profile", "dev");
+		this.action.begin(this.interpretationContext, null, this.attributes);
+		verify(this.environment).acceptsProfiles("dev");
+	}
+
+	@Test
+	public void environmentIsQueriedWithResolvedValuesFromCommaSeparatedNameNameAttributeWithPlaceholders()
+			throws ActionException {
+		given(this.attributes.getValue(Action.NAME_ATTRIBUTE))
+				.willReturn("${profile1},${profile2}");
+		this.context.putProperty("profile1", "dev");
+		this.context.putProperty("profile2", "qa");
+		this.action.begin(this.interpretationContext, null, this.attributes);
+		verify(this.environment).acceptsProfiles("dev", "qa");
+	}
+
+}