Initial commit

spec/models/order_ask_spec.rb

@@ -0,0 +1,52 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+describe OrderAsk do
+  subject { create(:order_ask, :btcusd) }
+
+  it { expect(subject.compute_locked).to eq subject.volume }
+
+  let(:market) do
+    Market.find(:btcusd).tap { |m| m.update(min_price: 0.1, min_amount: 0.1, max_price: 0.11) }
+  end
+
+  context 'compute locked for market order' do
+    let!(:orders) do
+      create(:order_ask, :btcusd, price: '202', volume: '10.0', state: :wait)
+      create(:order_ask, :btcusd, price: '201', volume: '10.0', state: :wait)
+      create(:order_ask, :btcusd, price: '200', volume: '10.0', state: :wait)
+      create(:order_ask, :btcusd, price: '100', volume: '10.0', state: :wait)
+    end
+
+    it 'should require locked in order funds' do
+      bid = OrderBid.new(market_id: :btcusd, volume: '5'.to_d, ord_type: 'market').compute_locked
+      expect(bid).to eq('500'.to_d)
+    end
+
+    it 'should make sure price is greater than min_price' do
+      ask = OrderAsk.new(market_id: market.id, price: '0.0'.to_d, ord_type: 'limit')
+      expect(ask).not_to be_valid
+      expect(ask.errors[:price]).to include "must be greater than or equal to #{market.min_price}"
+    end
+
+    it 'should raise error if the market is not deep enough' do
+      expect do
+        OrderAsk.new(market_id: :btcusd, volume: '50'.to_d, ord_type: 'market').compute_locked
+      end.to raise_error(Order::InsufficientMarketLiquidity)
+    end
+
+    it 'should make sure amount is greater than zero' do
+      ask_amount = OrderAsk.new(market_id: market.id, origin_volume: '0.0'.to_d)
+      expect(ask_amount).not_to be_valid
+
+      expect(ask_amount.errors[:origin_volume]).to include "must be greater than 0"
+    end
+
+    it 'should make sure amount is greater than min_amount' do
+      ask_amount = OrderAsk.new(market_id: market.id, origin_volume: '0.05'.to_d)
+      expect(ask_amount).not_to be_valid
+
+      expect(ask_amount.errors[:origin_volume]).to include "must be greater than or equal to #{market.min_amount}"
+    end
+  end
+end