Separated out buy functions into buyGear, buyArmoire, and buyPotion (#7065)

test/common/ops/buyPotion.js

@@ -0,0 +1,65 @@
+/* eslint-disable camelcase */
+import {
+  generateUser,
+} from '../../helpers/common.helper';
+import buyPotion from '../../../common/script/ops/buyPotion';
+import {
+  NotAuthorized,
+} from '../../../common/script/libs/errors';
+import i18n from '../../../common/script/i18n';
+
+describe('shared.ops.buyPotion', () => {
+  let user;
+
+  beforeEach(() => {
+    user = generateUser({
+      items: {
+        gear: {
+          owned: {
+            weapon_warrior_0: true,
+          },
+          equipped: {
+            weapon_warrior_0: true,
+          },
+        },
+      },
+      stats: { gp: 200 },
+    });
+  });
+
+  context('Potion', () => {
+    it('recovers 15 hp', () => {
+      user.stats.hp = 30;
+      buyPotion(user);
+      expect(user.stats.hp).to.eql(45);
+    });
+
+    it('does not increase hp above 50', () => {
+      user.stats.hp = 45;
+      buyPotion(user);
+      expect(user.stats.hp).to.eql(50);
+    });
+
+    it('deducts 25 gp', () => {
+      user.stats.hp = 45;
+      buyPotion(user);
+
+      expect(user.stats.gp).to.eql(175);
+    });
+
+    it('does not purchase if not enough gp', (done) => {
+      user.stats.hp = 45;
+      user.stats.gp = 5;
+      try {
+        buyPotion(user);
+      } catch (err) {
+        expect(err).to.be.an.instanceof(NotAuthorized);
+        expect(err.message).to.equal(i18n.t('messageNotEnoughGold'));
+        expect(user.stats.hp).to.eql(45);
+        expect(user.stats.gp).to.eql(5);
+
+        done();
+      }
+    });
+  });
+});