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Contents
require 'spec_helper'
class Predicate
describe Predicate, ".coerce" do
subject{ Predicate.coerce(arg) }
describe "from Predicate" do
let(:arg){ Predicate.new(Factory.tautology) }
it{ should be(arg) }
end
describe "from true" do
let(:arg){ true }
specify{
subject.expr.should be_a(Tautology)
}
end
describe "from false" do
let(:arg){ false }
specify{
subject.expr.should be_a(Contradiction)
}
end
describe "from Symbol" do
let(:arg){ :status }
specify{
subject.expr.should be_a(Identifier)
subject.expr.name.should eq(arg)
}
end
describe "from Proc" do
let(:arg){ lambda{ status == 10 } }
specify{
subject.expr.should be_a(Native)
}
end
describe "from String" do
let(:arg){ "status == 10" }
it 'raises an error' do
lambda{
subject
}.should raise_error(ArgumentError)
end
end
describe "from Hash (single)" do
let(:arg){ {status: 10} }
specify{
subject.expr.should be_a(Eq)
subject.expr.should eq([:eq, [:identifier, :status], [:literal, 10]])
}
end
describe "from Hash (multiple)" do
let(:arg){ {status: 10, name: "Jones"} }
specify{
expect(subject).to eq(Predicate.eq(status: 10) & Predicate.eq(name: "Jones"))
}
end
describe "from Hash (in)" do
let(:arg){ {status: [10, 15]} }
specify{
expect(subject).to eq(Predicate.in(:status, [10,15]))
}
end
end
end
Version data entries
15 entries across 15 versions & 1 rubygems