v3: start to fix unlocking

test/common/ops/unlock.js

@@ -43,10 +43,10 @@ describe('shared.ops.unlock', () => {
     }
   });
 
-  it('returns an error when user already owns an item', (done) => {
+  it('returns an error when user already owns a full set', (done) => {
     try {
-      unlock(user, {query: {path: backgroundUnlockPath}});
-      unlock(user, {query: {path: backgroundUnlockPath}});
+      unlock(user, {query: {path: unlockPath}});
+      unlock(user, {query: {path: unlockPath}});
     } catch (err) {
       expect(err).to.be.an.instanceof(NotAuthorized);
       expect(err.message).to.equal(i18n.t('alreadyUnlocked'));
@@ -54,6 +54,42 @@ describe('shared.ops.unlock', () => {
     }
   });
 
+  it('returns an error when user already owns items in a full set', (done) => {
+    try {
+      unlock(user, {query: {path: unlockPath}});
+      unlock(user, {query: {path: unlockPath}});
+    } catch (err) {
+      expect(err).to.be.an.instanceof(NotAuthorized);
+      expect(err.message).to.equal(i18n.t('alreadyUnlocked'));
+      done();
+    }
+  });
+
+  it('equips an item already owned', () => {
+    expect(user.purchased.background.giant_florals).to.not.exists;
+
+    unlock(user, {query: {path: backgroundUnlockPath}});
+    let afterBalance = user.balance;
+    let response = unlock(user, {query: {path: backgroundUnlockPath}});
+    expect(user.balance).to.equal(afterBalance); // do not bill twice
+
+    expect(response.message).to.not.exists;
+    expect(user.preferences.background).to.equal('giant_florals');
+  });
+
+  it('un-equips an item already equipped', () => {
+    expect(user.purchased.background.giant_florals).to.not.exists;
+
+    unlock(user, {query: {path: backgroundUnlockPath}}); // unlock
+    let afterBalance = user.balance;
+    unlock(user, {query: {path: backgroundUnlockPath}}); // equip
+    let response = unlock(user, {query: {path: backgroundUnlockPath}});
+    expect(user.balance).to.equal(afterBalance); // do not bill twice
+
+    expect(response.message).to.not.exists;
+    expect(user.preferences.background).to.equal('');
+  });
+
   it('unlocks a full set', () => {
     let response = unlock(user, {query: {path: unlockPath}});