Fix SpringProfileDocumentMatcher negation bug

Prior to this commit SpringProfileDocumentMatcher was returning 'found'
anytime a negated profile was not found, even if there were positive
profile matches required and unsatisfied.

Closes gh-5747
See gh-4953

spring-boot/src/main/java/org/springframework/boot/yaml/SpringProfileDocumentMatcher.java

@@ -68,10 +68,10 @@ public class SpringProfileDocumentMatcher implements DocumentMatcher {
 		if (StringUtils.hasLength(negative)) {
 			properties = new Properties(properties);
 			properties.setProperty(SPRING_PROFILES, negative);
-			switch (activeProfilesMatcher.matches(properties)) {
-			case FOUND:
+			if (activeProfilesMatcher.matches(properties) == MatchStatus.FOUND) {
 				return MatchStatus.NOT_FOUND;
-			case NOT_FOUND:
+			}
+			if (StringUtils.isEmpty(positive)) {
 				return MatchStatus.FOUND;
 			}
 			properties.setProperty(SPRING_PROFILES, positive);

spring-boot/src/test/java/org/springframework/boot/yaml/SpringProfileDocumentMatcherTests.java

@@ -85,12 +85,19 @@ public class SpringProfileDocumentMatcherTests {
 	}
 
 	@Test
-	public void negatedAndNonNegated() throws IOException {
+	public void negatedWithMatch() throws Exception {
 		DocumentMatcher matcher = new SpringProfileDocumentMatcher("foo", "bar", "blah");
 		Properties properties = getProperties("spring.profiles: !baz,blah");
 		assertThat(matcher.matches(properties)).isEqualTo(MatchStatus.FOUND);
 	}
 
+	@Test
+	public void negatedWithNoMatch() throws IOException {
+		DocumentMatcher matcher = new SpringProfileDocumentMatcher("foo", "bar", "blah");
+		Properties properties = getProperties("spring.profiles: !baz,another");
+		assertThat(matcher.matches(properties)).isEqualTo(MatchStatus.NOT_FOUND);
+	}
+
 	@Test
 	public void negatedTrumpsMatching() throws IOException {
 		DocumentMatcher matcher = new SpringProfileDocumentMatcher("foo", "baz", "blah");