114 lines
3.1 KiB
Ruby
114 lines
3.1 KiB
Ruby
# frozen_string_literal: true
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RSpec.shared_examples 'AtomicInternalId' do |validate_presence: true|
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describe '.has_internal_id' do
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describe 'Module inclusion' do
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subject { described_class }
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it { is_expected.to include_module(AtomicInternalId) }
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end
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describe 'Validation' do
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before do
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allow_any_instance_of(described_class).to receive(:"ensure_#{scope}_#{internal_id_attribute}!")
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instance.valid?
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end
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context 'when presence validation is required' do
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before do
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skip unless validate_presence
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end
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it 'validates presence' do
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expect(instance.errors[internal_id_attribute]).to include("can't be blank")
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end
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end
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context 'when presence validation is not required' do
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before do
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skip if validate_presence
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end
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it 'does not validate presence' do
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expect(instance.errors[internal_id_attribute]).to be_empty
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end
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end
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end
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describe 'Creating an instance' do
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subject { instance.save! }
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it 'saves a new instance properly' do
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expect { subject }.not_to raise_error
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end
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end
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describe 'internal id generation' do
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subject { instance.save! }
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it 'calls InternalId.generate_next and sets internal id attribute' do
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iid = rand(1..1000)
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expect(InternalId).to receive(:generate_next).with(instance, scope_attrs, usage, any_args).and_return(iid)
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subject
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expect(read_internal_id).to eq(iid)
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end
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it 'does not overwrite an existing internal id' do
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write_internal_id(4711)
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expect { subject }.not_to change { read_internal_id }
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end
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context 'when the instance has an internal ID set' do
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let(:internal_id) { 9001 }
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it 'calls InternalId.update_last_value and sets the `last_value` to that of the instance' do
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write_internal_id(internal_id)
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expect(InternalId)
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.to receive(:track_greatest)
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.with(instance, scope_attrs, usage, internal_id, any_args)
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.and_return(internal_id)
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subject
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end
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end
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end
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describe "#reset_scope_internal_id_attribute" do
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it 'rewinds the allocated IID' do
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expect { ensure_scope_attribute! }.not_to raise_error
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expect(read_internal_id).not_to be_nil
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expect(reset_scope_attribute).to be_nil
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expect(read_internal_id).to be_nil
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end
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it 'allocates the same IID' do
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internal_id = ensure_scope_attribute!
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reset_scope_attribute
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expect(read_internal_id).to be_nil
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expect(ensure_scope_attribute!).to eq(internal_id)
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end
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end
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def ensure_scope_attribute!
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instance.public_send(:"ensure_#{scope}_#{internal_id_attribute}!")
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end
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def reset_scope_attribute
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instance.public_send(:"reset_#{scope}_#{internal_id_attribute}")
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end
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def read_internal_id
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instance.public_send(internal_id_attribute)
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end
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def write_internal_id(value)
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instance.public_send(:"#{internal_id_attribute}=", value)
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end
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end
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end
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