Consistently use double quotes (even if no interpolation needed)

spring-test/spring-test.gradle

@@ -74,8 +74,8 @@ dependencies {
 	testCompile("org.apache.httpcomponents:httpclient:4.5.5") {
 		exclude group: "commons-logging", module: "commons-logging"
 	}
-	testCompile('io.projectreactor.ipc:reactor-netty')
-	testCompile('de.bechte.junit:junit-hierarchicalcontextrunner:4.12.1')
+	testCompile("io.projectreactor.ipc:reactor-netty")
+	testCompile("de.bechte.junit:junit-hierarchicalcontextrunner:4.12.1")
 	// Pull in the latest JUnit 5 Launcher API and the Vintage engine as well
 	// so that we can run JUnit 4 tests in IntelliJ IDEA.
 	testRuntime("org.junit.jupiter:junit-jupiter-engine:${junitJupiterVersion}")
@@ -87,7 +87,7 @@ dependencies {
 }
 
 task testNG(type: Test) {
-	description = 'Runs TestNG tests.'
+	description = "Runs TestNG tests."
 	useTestNG()
 	scanForTestClasses = false
 	include(["**/testng/**/*Tests.class", "**/testng/**/*Test.class"])
@@ -98,19 +98,19 @@ task testNG(type: Test) {
 }
 
 test {
-	description = 'Runs JUnit tests.'
+	description = "Runs JUnit tests."
 	dependsOn testNG
 	useJUnit()
 	scanForTestClasses = false
-	include(['**/*Tests.class', '**/*Test.class', '**/SpringJUnitJupiterTestSuite.class'])
-	exclude(['**/testng/**/*.*'])
+	include(["**/*Tests.class", "**/*Test.class", "**/SpringJUnitJupiterTestSuite.class"])
+	exclude(["**/testng/**/*.*"])
 	// Java Util Logging for JUnit 5.
-	// systemProperty('java.util.logging.manager', 'org.apache.logging.log4j.jul.LogManager')
+	// systemProperty("java.util.logging.manager", "org.apache.logging.log4j.jul.LogManager")
 	reports.junitXml.destination = file("$buildDir/test-results")
 }
 
 task aggregateTestReports(type: TestReport) {
-	description = 'Aggregates JUnit and TestNG test reports.'
+	description = "Aggregates JUnit and TestNG test reports."
 	destinationDir = test.reports.html.destination
 	reportOn test, testNG
 }