Add test for validate item name helper

fixes #65

test/unit/helpers/sdtd/validate-item-name.test.js

@@ -0,0 +1,36 @@
+describe('HELPER sdtd/validate-item-name', () => {
+
+    beforeEach(() => {
+        sails.helpers.sdtdApi.executeConsoleCommand = sandbox.stub().returns({
+            result: `    ammo9mmBulletBall
+            Listed 1 matching items.`
+        });
+    })
+
+    it('Validates an item', async () => {
+
+        const trueResult = await sails.helpers.sdtd.validateItemName(sails.testServer.id, "ammo9mmBulletBall");
+
+        expect(trueResult).to.be.an('boolean');
+        expect(trueResult).to.be.true;
+
+        const falseResult = await sails.helpers.sdtd.validateItemName(sails.testServer.id, "some nonexisting item");
+
+        expect(falseResult).to.be.an('boolean');
+        expect(falseResult).to.be.false;
+    });
+
+    it('Errors when no server is given', async () => {
+        await expect(sails.helpers.sdtd.validateItemName(null, "ammo9mmBulletBall")).to.eventually.be.rejectedWith(Error)
+    });
+
+    it('Errors when an unexisting server is given', async () => {
+        const fakeServer = sails.testServer;
+        fakeServer.id += 5
+        await expect(sails.helpers.sdtd.validateItemName(fakeServer, "ammo9mmBulletBall")).to.eventually.be.rejectedWith(Error)
+    });
+});
+
+
+
+