Switch order of literals to prevent NullPointerException

Author: pixeebot

junit-platform-commons/src/main/java/org/junit/platform/commons/util/CloseablePath.java

@@ -59,7 +59,7 @@ static CloseablePath create(URI uri, FileSystemProvider fileSystemProvider) thro
 			return createForJarFileSystem(new URI(jarUri), fileSystem -> fileSystem.getPath(jarEntry),
 				fileSystemProvider);
 		}
-		if (uri.getScheme().equals(FILE_URI_SCHEME) && uri.getPath().endsWith(JAR_FILE_EXTENSION)) {
+		if (FILE_URI_SCHEME.equals(uri.getScheme()) && uri.getPath().endsWith(JAR_FILE_EXTENSION)) {
 			return createForJarFileSystem(new URI(JAR_URI_SCHEME + ':' + uri),
 				fileSystem -> fileSystem.getRootDirectories().iterator().next(), fileSystemProvider);
 		}

junit-platform-engine/src/main/java/org/junit/platform/engine/UniqueId.java

@@ -118,7 +118,7 @@ final Optional<Segment> getRoot() {
 	 * @see #forEngine(String)
 	 */
 	public final Optional<String> getEngineId() {
-		return getRoot().filter(segment -> segment.getType().equals(ENGINE_SEGMENT_TYPE)).map(Segment::getValue);
+		return getRoot().filter(segment -> ENGINE_SEGMENT_TYPE.equals(segment.getType())).map(Segment::getValue);
 	}
 
 	/**

junit-platform-launcher/src/main/java/org/junit/platform/launcher/core/EngineIdValidator.java

@@ -56,15 +56,15 @@ private static boolean validateReservedIds(TestEngine testEngine) {
 		if (!engineId.startsWith("junit-")) {
 			return true;
 		}
-		if (engineId.equals("junit-jupiter")) {
+		if ("junit-jupiter".equals(engineId)) {
 			validateWellKnownClassName(testEngine, "org.junit.jupiter.engine.JupiterTestEngine");
 			return true;
 		}
-		if (engineId.equals("junit-vintage")) {
+		if ("junit-vintage".equals(engineId)) {
 			validateWellKnownClassName(testEngine, "org.junit.vintage.engine.VintageTestEngine");
 			return true;
 		}
-		if (engineId.equals("junit-platform-suite")) {
+		if ("junit-platform-suite".equals(engineId)) {
 			validateWellKnownClassName(testEngine, "org.junit.platform.suite.engine.SuiteTestEngine");
 			return true;
 		}