Initial commit

spec/models/tradinng_fee_spec.rb

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+# encoding: UTF-8
+# frozen_string_literal: true
+
+describe TradingFee, 'Relationships' do
+  context 'belongs to market' do
+    context 'null market_id' do
+      subject { build(:trading_fee) }
+      it { expect(subject.valid?).to be_truthy }
+    end
+
+    context 'existing market_id' do
+      subject { build(:trading_fee, market_id: :btcusd) }
+      it { expect(subject.valid?).to be_truthy }
+    end
+
+    context 'non-existing market_id' do
+      subject { build(:trading_fee, market_id: :usdbtc) }
+      it { expect(subject.valid?).to be_falsey }
+    end
+  end
+end
+
+describe TradingFee, 'Validations' do
+  before(:each) { TradingFee.delete_all }
+
+  context 'group presence' do
+    context 'nil group' do
+      subject { build(:trading_fee, market_id: :btceth, group: nil) }
+      it { expect(subject.valid?).to be_falsey }
+    end
+
+    context 'empty string group' do
+      subject { build(:trading_fee, market_id: :btceth, group: '') }
+      it { expect(subject.valid?).to be_falsey }
+    end
+  end
+
+  context 'group uniqueness' do
+    context 'different markets' do
+      before { create(:trading_fee, market_id: :btcusd, group: 'vip-1') }
+
+      context 'same group' do
+        subject { build(:trading_fee, market_id: :btceth, group: 'vip-1') }
+        it { expect(subject.valid?).to be_truthy }
+      end
+
+      context 'different group' do
+        subject { build(:trading_fee, market_id: :btceth, group: 'vip-2') }
+        it { expect(subject.valid?).to be_truthy }
+      end
+
+      context ':any group' do
+        before { create(:trading_fee, market_id: :btcusd, group: :any) }
+        subject { build(:trading_fee, market_id: :btceth, group: :any) }
+        it { expect(subject.valid?).to be_truthy }
+      end
+    end
+
+    context 'same market' do
+      before { create(:trading_fee, market_id: :btcusd, group: 'vip-1') }
+
+      context 'same group' do
+        subject { build(:trading_fee, market_id: :btcusd, group: 'vip-1') }
+        it { expect(subject.valid?).to be_falsey }
+      end
+
+      context 'different group' do
+        subject { build(:trading_fee, market_id: :btcusd, group: 'vip-2') }
+        it { expect(subject.valid?).to be_truthy }
+      end
+
+      context ':any group' do
+        before { create(:trading_fee, market_id: :btcusd, group: :any) }
+        subject { build(:trading_fee, market_id: :btcusd, group: :any) }
+        it { expect(subject.valid?).to be_falsey }
+      end
+    end
+
+    context ':any market' do
+      before { create(:trading_fee, group: 'vip-1') }
+
+      context 'same group' do
+        subject { build(:trading_fee, group: 'vip-1') }
+        it { expect(subject.valid?).to be_falsey }
+      end
+
+      context 'different group' do
+        subject { build(:trading_fee, group: 'vip-2') }
+        it { expect(subject.valid?).to be_truthy }
+      end
+
+      context ':any group' do
+        before { create(:trading_fee, group: :any) }
+        subject { build(:trading_fee, group: :any) }
+        it { expect(subject.valid?).to be_falsey }
+      end
+    end
+  end
+
+  context 'maker, taker numericality' do
+    context 'non decimal maker/taker' do
+      subject { build(:trading_fee, maker: '1', taker: '1') }
+      it { expect(subject.valid?).to be_falsey }
+    end
+
+    context 'valid trading_fee' do
+      subject { build(:trading_fee, maker: 0.1, taker: 0.2) }
+      it { expect(subject.valid?).to be_truthy }
+    end
+  end
+
+  context 'market_id presence' do
+    context 'nil group' do
+      subject { build(:trading_fee, market_id: nil) }
+      it { expect(subject.valid?).to be_falsey }
+    end
+
+    context 'empty string group' do
+      subject { build(:trading_fee, market_id: '') }
+      it { expect(subject.valid?).to be_falsey }
+    end
+  end
+
+  context 'market_id inclusion in' do
+    context 'invalid market_id' do
+      subject { build(:trading_fee, market_id: :ethusd) }
+      it { expect(subject.valid?).to be_falsey }
+    end
+
+    context 'valid trading_fee' do
+      subject { build(:trading_fee, market_id: :btcusd) }
+      it { expect(subject.valid?).to be_truthy }
+    end
+  end
+end
+
+describe TradingFee, 'Class Methods' do
+  before(:each) { TradingFee.delete_all }
+
+  context '#for' do
+    let!(:member) { create(:member) }
+
+    context 'get trading_fee with marker_id and group' do
+      before do
+        create(:trading_fee, market_id: :btcusd, group: 'vip-0')
+        create(:trading_fee, market_id: :any, group: 'vip-0')
+        create(:trading_fee, market_id: :btcusd, group: :any)
+        create(:trading_fee, market_id: :any, group: :any)
+      end
+
+      let(:order) { Order.new(member: member, market_id: :btcusd) }
+      subject { TradingFee.for(group: order.member.group, market_id: order.market_id) }
+
+      it do
+        expect(subject).to be_truthy
+        expect(subject.market_id).to eq('btcusd')
+        expect(subject.group).to eq('vip-0')
+      end
+    end
+
+    context 'get trading_fee with group' do
+      before do
+        create(:trading_fee, market_id: :any, group: 'vip-1')
+        create(:trading_fee, market_id: :btcusd, group: :any)
+        create(:trading_fee, market_id: :any, group: :any)
+      end
+
+      let(:order) { Order.new(member: member, market_id: :btcusd) }
+      subject { TradingFee.for(group: order.member.group, market_id: order.market_id) }
+
+      it do
+        expect(subject).to be_truthy
+        expect(subject.market_id).to eq('btcusd')
+        expect(subject.group).to eq('any')
+      end
+    end
+
+    context 'get trading_fee with market_id' do
+      before do
+        create(:trading_fee, market_id: :any, group: 'vip-0')
+        create(:trading_fee, market_id: :btcusd, group: :any)
+        create(:trading_fee, market_id: :any, group: :any)
+      end
+
+      let(:order) { Order.new(member: member, market_id: :btceth) }
+      subject { TradingFee.for(group: order.member.group, market_id: order.market_id) }
+
+      it do
+        expect(subject).to be_truthy
+        expect(subject.market_id).to eq('any')
+        expect(subject.group).to eq('vip-0')
+      end
+    end
+
+    context 'get default trading_fee' do
+      before do
+        create(:trading_fee, market_id: :any, group: 'vip-1')
+        create(:trading_fee, market_id: :btcusd, group: :any)
+        create(:trading_fee, market_id: :any, group: :any)
+      end
+
+      let(:order) { Order.new(member: member, market_id: :btceth) }
+      subject { TradingFee.for(group: order.member.group, market_id: order.market_id) }
+
+      it do
+        expect(subject).to be_truthy
+        expect(subject.market_id).to eq('any')
+        expect(subject.group).to eq('any')
+      end
+    end
+
+    context 'get default trading_fee (doesnt create it)' do
+      let(:order) { Order.new(member: member, market_id: :btceth) }
+      subject { TradingFee.for(group: order.member.group, market_id: order.market_id) }
+
+      it do
+        expect(subject).to be_truthy
+        expect(subject.market_id).to eq('any')
+        expect(subject.group).to eq('any')
+      end
+    end
+  end
+end