[FIX] adapters/Memory: Return cloned resources (#235)

Also makes sure to pass the project reference when cloning a resource

lib/Resource.js

@@ -261,7 +261,8 @@ class Resource {
 	clone() {
 		const options = {
 			path: this._path,
-			statInfo: clone(this._statInfo)
+			statInfo: clone(this._statInfo),
+			project: this._project
 		};
 
 		const addContentOption = () => {

lib/adapters/Memory.js

@@ -25,6 +25,24 @@ class Memory extends AbstractAdapter {
 		this._virDirs = {}; // map full of directories
 	}
 
+	/**
+	 * Matches and returns resources from a given map (either _virFiles or _virDirs).
+	 *
+	 * @private
+	 * @param {string[]} patterns
+	 * @param {object} resourceMap
+	 * @returns {Promise<module:@ui5/fs.Resource[]>}
+	 */
+	async _matchPatterns(patterns, resourceMap) {
+		const resourcePaths = Object.keys(resourceMap);
+		const matchedPaths = micromatch(resourcePaths, patterns, {
+			dot: true
+		});
+		return Promise.all(matchedPaths.map((virPath) => {
+			return resourceMap[virPath] && resourceMap[virPath].clone();
+		}));
+	}
+
 	/**
 	 * Locate resources by glob.
 	 *
@@ -50,22 +68,11 @@ class Memory extends AbstractAdapter {
 			];
 		}
 
-		const filePaths = Object.keys(this._virFiles);
-		const matchedFilePaths = micromatch(filePaths, patterns, {
-			dot: true
-		});
-		let matchedResources = matchedFilePaths.map((virPath) => {
-			return this._virFiles[virPath];
-		});
+		let matchedResources = await this._matchPatterns(patterns, this._virFiles);
 
 		if (!options.nodir) {
-			const dirPaths = Object.keys(this._virDirs);
-			const matchedDirs = micromatch(dirPaths, patterns, {
-				dot: true
-			});
-			matchedResources = matchedResources.concat(matchedDirs.map((virPath) => {
-				return this._virDirs[virPath];
-			}));
+			const matchedDirs = await this._matchPatterns(patterns, this._virDirs);
+			matchedResources = matchedResources.concat(matchedDirs);
 		}
 
 		return matchedResources;
@@ -80,28 +87,25 @@ class Memory extends AbstractAdapter {
 	 * @param {module:@ui5/fs.tracing.Trace} trace Trace instance
 	 * @returns {Promise<module:@ui5/fs.Resource>} Promise resolving to a single resource
 	 */
-	_byPath(virPath, options, trace) {
+	async _byPath(virPath, options, trace) {
 		if (this.isPathExcluded(virPath)) {
-			return Promise.resolve(null);
+			return null;
+		}
+		if (!virPath.startsWith(this._virBasePath) && virPath !== this._virBaseDir) {
+			// Neither starts with basePath, nor equals baseDirectory
+			return null;
 		}
-		return new Promise((resolve, reject) => {
-			if (!virPath.startsWith(this._virBasePath) && virPath !== this._virBaseDir) {
-				// Neither starts with basePath, nor equals baseDirectory
-				resolve(null);
-				return;
-			}
 
-			const relPath = virPath.substr(this._virBasePath.length);
-			trace.pathCall();
+		const relPath = virPath.substr(this._virBasePath.length);
+		trace.pathCall();
 
-			const resource = this._virFiles[relPath];
+		const resource = this._virFiles[relPath];
 
-			if (!resource || (options.nodir && resource.getStatInfo().isDirectory())) {
-				resolve(null);
-			} else {
-				resolve(resource);
-			}
-		});
+		if (!resource || (options.nodir && resource.getStatInfo().isDirectory())) {
+			return null;
+		} else {
+			return await resource.clone();
+		}
 	}
 
 	/**

test/lib/adapters/Memory_read.js

@@ -1,5 +1,6 @@
 const test = require("ava");
 const {resourceFactory} = require("../../../");
+const MemoryAdapter = require("../../../lib/adapters/Memory");
 
 async function fillFromFs(readerWriter, {fsBasePath = "./test/fixtures/glob", virBasePath = "/app/"} = {}) {
 	const fsReader = resourceFactory.createAdapter({
@@ -606,3 +607,59 @@ test("static excludes: glob with negated directory exclude, not excluding resour
 
 	t.deepEqual(resources.length, 4, "Found two resources and two directories");
 });
+
+test("byPath returns new resource", async (t) => {
+	const originalResource = resourceFactory.createResource({
+		path: "/app/index.html",
+		string: "test"
+	});
+
+	const memoryAdapter = new MemoryAdapter({virBasePath: "/"});
+
+	await memoryAdapter.write(originalResource);
+
+	const returnedResource = await memoryAdapter.byPath("/app/index.html");
+
+	t.deepEqual(returnedResource, originalResource,
+		"Returned resource should be deep equal to original resource");
+	t.not(returnedResource, originalResource,
+		"Returned resource should not have same reference as original resource");
+
+	const anotherReturnedResource = await memoryAdapter.byPath("/app/index.html");
+
+	t.deepEqual(anotherReturnedResource, originalResource,
+		"Returned resource should be deep equal to original resource");
+	t.not(anotherReturnedResource, originalResource,
+		"Returned resource should not have same reference as original resource");
+
+	t.not(returnedResource, anotherReturnedResource,
+		"Both returned resources should not have same reference");
+});
+
+test("byGlob returns new resources", async (t) => {
+	const originalResource = resourceFactory.createResource({
+		path: "/app/index.html",
+		string: "test"
+	});
+
+	const memoryAdapter = new MemoryAdapter({virBasePath: "/"});
+
+	await memoryAdapter.write(originalResource);
+
+	const [returnedResource] = await memoryAdapter.byGlob("/**");
+
+	t.deepEqual(returnedResource, originalResource,
+		"Returned resource should be deep equal to the original resource");
+	t.not(returnedResource, originalResource,
+		"Returned resource should not have same reference as the original resource");
+
+	const [anotherReturnedResource] = await memoryAdapter.byGlob("/**");
+
+	t.deepEqual(anotherReturnedResource, originalResource,
+		"Another returned resource should be deep equal to the original resource");
+	t.not(anotherReturnedResource, originalResource,
+		"Another returned resource should not have same reference as the original resource");
+
+	t.not(returnedResource, anotherReturnedResource,
+		"Both returned resources should not have same reference");
+});