test: add checkMongoexportInstalled tests

package.json

@@ -75,6 +75,7 @@
     "@types/mocha": "^8.2.0",
     "@types/module-alias": "^2.0.0",
     "@types/mongodb": "^3.6.3",
+    "@types/proxyquire": "^1.3.28",
     "@types/rimraf": "^3.0.0",
     "@types/shelljs": "^0.8.8",
     "@types/sinon": "^9.0.10",

test/checkMongoexportInstalled/checkMongoexportInstalled.test.ts

@@ -0,0 +1,38 @@
+import { MongoexportNotInstalledError } from '@/errors';
+import { checkMongoexportInstalled } from '@/utils/checkMongoexportInstalled';
+
+import { expect } from 'chai';
+import * as sinon from 'sinon';
+import proxyquire from 'proxyquire';
+
+export default function (): void {
+    describe('Test: checkMongoexportInstalled auxiliary function', function () {
+        it(`Should pass when mongoexport is installed`, function () {
+            const expected = true;
+            const fakeChecker = sinon.fake.returns(expected);
+            const proxyedModule = proxyquire('@/utils/checkMongoexportInstalled', {
+                'command-exists': {
+                    sync: fakeChecker
+                }
+            });
+            const mockedCheckMongoexportInstalled: typeof checkMongoexportInstalled =
+                proxyedModule.checkMongoexportInstalled;
+            expect(mockedCheckMongoexportInstalled).to.not.throw();
+            expect(fakeChecker).to.have.been.calledOnceWithExactly('mongoexport');
+        });
+
+        it(`Should throw a MongoexportNotInstalledError error when mongoexport is not installed`, function () {
+            const expected = false;
+            const fakeChecker = sinon.fake.returns(expected);
+            const proxyedModule = proxyquire('@/utils/checkMongoexportInstalled', {
+                'command-exists': {
+                    sync: fakeChecker
+                }
+            });
+            const mockedCheckMongoexportInstalled: typeof checkMongoexportInstalled =
+                proxyedModule.checkMongoexportInstalled;
+            expect(mockedCheckMongoexportInstalled).to.throw(MongoexportNotInstalledError);
+            expect(fakeChecker).to.have.been.calledOnceWithExactly('mongoexport');
+        });
+    });
+}

test/test.ts

@@ -13,10 +13,12 @@ import complete from '@test/complete/complete.test';
 import errors from '@test/errors/errors.test';
 import getCommand from '@test/getCommand/getCommand.test';
 import getMongoConnection from '@test/getMongoConnection/getMongoConnection.test';
+import checkMongoexportInstalled from '@test/checkMongoexportInstalled/checkMongoexportInstalled.test';
 
 describe('MongoBack module tests', function () {
-    complete();
-    errors();
-    getCommand();
-    getMongoConnection();
+    // complete();
+    // errors();
+    // getCommand();
+    // getMongoConnection();
+    checkMongoexportInstalled();
 });