added possibility to ignore MagicMirror repo in updatenotification (#3002)

was [requested in the
forum](https://forum.magicmirror.builders/topic/17519/updatenotification).

- added possibility to exclude MagicMirror Repo and renamed it from
`default` to `MagicMirror`
- improved getting `behind` in case a hard `git fetch` was already done
- removed test "excludes repo if refs don't match regex" because of
above improvement this case is obsolete
- improved `git fetch --dry-run` with `-n` option to exclude tags (noise
reduction)

tests/unit/functions/__snapshots__/updatenotification_spec.js.snap

@@ -11,24 +11,24 @@ exports[`Updatenotification custom module returns status information without has
 }
 `;
 
-exports[`Updatenotification default returns status information 1`] = `
+exports[`Updatenotification MagicMirror returns status information 1`] = `
 {
   "behind": 5,
   "current": "develop",
   "hash": "332e429a41f1a2339afd4f0ae96dd125da6beada",
   "isBehindInStatus": false,
-  "module": "default",
+  "module": "MagicMirror",
   "tracking": "origin/develop",
 }
 `;
 
-exports[`Updatenotification default returns status information early if isBehindInStatus 1`] = `
+exports[`Updatenotification MagicMirror returns status information early if isBehindInStatus 1`] = `
 {
   "behind": 5,
   "current": "develop",
   "hash": "332e429a41f1a2339afd4f0ae96dd125da6beada",
   "isBehindInStatus": true,
-  "module": "default",
+  "module": "MagicMirror",
   "tracking": "origin/develop",
 }
 `;

tests/unit/functions/updatenotification_spec.js

@@ -57,7 +57,7 @@ describe("Updatenotification", () => {
 				return { stdout: gitRevParseOut, stderr: gitRevParseErr };
 			} else if (command.includes("git status -sb")) {
 				return { stdout: gitStatusOut, stderr: gitStatusErr };
-			} else if (command.includes("git fetch --dry-run")) {
+			} else if (command.includes("git fetch -n --dry-run")) {
 				return { stdout: gitFetchOut, stderr: gitFetchErr };
 			} else if (command.includes("git rev-list --ancestry-path --count")) {
 				return { stdout: gitRevListOut, stderr: gitRevListErr };
@@ -71,8 +71,8 @@ describe("Updatenotification", () => {
 		jest.clearAllMocks();
 	});
 
-	describe("default", () => {
-		const moduleName = "default";
+	describe("MagicMirror", () => {
+		const moduleName = "MagicMirror";
 
 		beforeEach(async () => {
 			gitRemoteOut = "origin\tgit@github.com:MichMich/MagicMirror.git (fetch)\norigin\tgit@github.com:MichMich/MagicMirror.git (push)\n";
@@ -108,13 +108,6 @@ describe("Updatenotification", () => {
 			const { error } = require("logger");
 			expect(error).toHaveBeenCalledWith(`Failed to retrieve repo info for ${moduleName}: Failed to retrieve status`);
 		});
-
-		it("excludes repo if refs don't match regex", async () => {
-			gitFetchErr = "";
-
-			const repos = await gitHelper.getRepos();
-			expect(repos.length).toBe(0);
-		});
 	});
 
 	describe("custom module", () => {