Initial commit

spec/models/concerns/precision_validator_spec.rb

@@ -0,0 +1,29 @@
+# encoding: UTF-8
+# frozen_string_literal: true
+
+class Validatable
+  include ActiveModel::Validations
+  attr_accessor :amount
+  validates :amount, precision: { less_than_or_eq_to: 2 }
+end
+
+describe PrecisionValidator do
+  subject { Validatable.new }
+
+  it 'returns valid record' do
+    subject.stubs(amount: 1)
+    expect(subject).to be_valid
+  end
+
+  it 'returns invalid record with errors' do
+    subject.stubs(amount: 0.001)
+    expect(subject).not_to be_valid
+    expect(subject.errors[:amount]).to include(/precision must be less than or equal to 2/)
+  end
+
+  it 'returns invalid record with errors' do
+    subject.stubs(amount: '0.001')
+    expect(subject).not_to be_valid
+    expect(subject.errors[:amount]).to include(/must be a number/)
+  end
+end