73 lines
1.7 KiB
Ruby
73 lines
1.7 KiB
Ruby
# == Schema Information
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#
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# Table name: order_items
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#
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# id :integer not null, primary key
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# order_id :integer
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# product_id :integer not null
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# count :integer default("0")
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#
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describe OrderItem do
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it 'has a valid factory' do
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order_item = create :order_item
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expect(order_item).to be_valid
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end
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############
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# FIELDS #
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############
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describe 'fields' do
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before :each do
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@order_item = create :order_item
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end
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describe 'product' do
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it 'should be present' do
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@order_item.product = nil
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expect(@order_item).to_not be_valid
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end
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end
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describe 'count' do
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it 'should be present' do
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@order_item.count = nil
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expect(@order_item).to_not be_valid
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end
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it 'should be positive' do
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@order_item.count = -5
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expect(@order_item).to_not be_valid
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end
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it 'should be less or equal to product stock' do
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@order_item.count = @order_item.product.stock + 1
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expect(@order_item).to_not be_valid
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@order_item.count = @order_item.product.stock
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expect(@order_item).to be_valid
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end
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end
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end
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###############
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# CALLBACKS #
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###############
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describe 'stock change' do
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before :each do
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@product = create :product
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@count = rand 10
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@order_item = build :order_item, product: @product, count: @count
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end
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it 'should decrement on create' do
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expect{ @order_item.save }.to change{ @product.stock }.by(-@count)
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end
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it 'should increment on destroy' do
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@order_item.save
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expect{ @order_item.destroy }.to change{ @product.stock }.by(@count)
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end
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end
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end
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