Separate out backer gear into own module

test/content/gear.js

@@ -2,8 +2,10 @@ import {
   expectValidTranslationString,
 } from '../helpers/content.helper';
 import { each } from 'lodash';
+import camelCase from 'lodash.camelcase';
 
 import { tree as allGear } from '../../common/script/content/gear';
+import backerGear from '../../common/script/content/gear/sets/special-backer';
 
 describe('Gear', () => {
   each(allGear, (piece, gearType) => {
@@ -41,4 +43,53 @@ describe('Gear', () => {
       });
     });
   });
+
+  describe('backer gear', () => {
+    let user;
+
+    beforeEach(() => {
+      user = {
+        backer: {},
+        items: { gear: { owned: {} } },
+      };
+    });
+
+    let cases = {
+      armor_special_0: 45,
+      armor_special_2: 300,
+      head_special_0: 45,
+      head_special_2: 300,
+      weapon_special_0: 70,
+      weapon_special_2: 300,
+      weapon_special_3: 300,
+    }
+
+    each(cases, (tierRequirement, key) => {
+      context(key, () => {
+        let camelCaseKey = camelCase(key);
+
+        it(`canOwn returns true if user has a backer tier of ${tierRequirement} or higher`, () => {
+          user.backer.tier = tierRequirement;
+          expect(backerGear[camelCaseKey].canOwn(user)).to.eql(true);
+
+          user.backer.tier = tierRequirement + 1;
+          expect(backerGear[camelCaseKey].canOwn(user)).to.eql(true);
+        });
+
+        it('canOwn returns true if user already owns the item', () => {
+          user.items.gear.owned[key] = true;
+          expect(backerGear[camelCaseKey].canOwn(user)).to.eql(true);
+        });
+
+        it('canOwn returns true if user has previously owned the item', () => {
+          user.items.gear.owned[key] = false;
+          expect(backerGear[camelCaseKey].canOwn(user)).to.eql(true);
+        });
+
+        it('canOwn returns false if user does not have tier requirement and did not previously own the item', () => {
+          expect(backerGear[camelCaseKey].canOwn(user)).to.eql(false);
+        });
+      });
+    });
+  });
 });