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# File 'lib/semanticgap_date_time_form/spec.rb', line 9
def it_has_datetime_fields_for(attr, options = Hash.new)
attr_fields = "#{attr}_fields"
describe "\##{attr_fields}" do
context 'first call' do
before(:each) do
subject.send("#{attr}=", Time.now)
end
it "creates a datetime form initialized with the value @#{attr} and the options #{options.inspect}" do
SemanticGap::DateTimeForm::Form.should_receive(:new).
with(subject.send(attr), options)
subject.send(attr_fields)
end
it "returns the form" do
SemanticGap::DateTimeForm::Form.should_receive(:new).and_return(:form)
subject.send(attr_fields).should == :form
end
end
context 'subsequent calls' do
before(:each) do
@form = subject.send(attr_fields)
end
it "does not create a new datetime form" do
SemanticGap::DateTimeForm::Form.should_not_receive(:new)
subject.send(attr_fields)
end
it "returns the form" do
subject.send(attr_fields).should == @form
end
end
end
describe "\##{attr_fields}=" do
it "updates the fields' attributes with the value" do
@params = { :year => 2010, :month => 5, :day => 6 }
subject.send(attr_fields).should_receive(:attributes=).with(@params)
subject.send("#{attr_fields}=", @params)
end
context 'with valid fields' do
it "updates @#{attr} to the fields' datetime" do
@params = { :year => 2010, :month => 5, :day => 6, :hour => 12, :minute => 0, :ampm => 'PM' }
lambda { subject.send("#{attr_fields}=", @params) }.
should change(subject, attr).to(DateTime.new(2010, 5, 6, 12, 0))
end
end
context 'with invalid fields' do
before(:each) do
subject.send("#{attr}=", Time.now)
end
it "updates @#{attr} to nil" do
lambda { subject.send("#{attr_fields}=", { :month => 13 } ) }.
should change(subject, attr).to(nil)
end
end
end
describe '#valid?' do
context 'when #{attr_fields} are valid' do
before(:each) do
subject.send(attr_fields).stub!(:valid?).and_return(true)
end
it "does NOT add errors for #{attr}" do
subject.should_not have(:any).errors_on(attr)
end
end
context 'when #{attr_fields} are invalid' do
before(:each) do
subject.send(attr_fields).stub!(:valid?).and_return(false)
end
it "adds errors for :published_at" do
subject.should have_at_least(1).error_on(attr)
end
end
end
describe '#save!' do
context "when #{attr} is nil" do
before(:each) do
subject.send("#{attr}=", nil)
end
it "updates #{attr} with the #{attr_fields} datetime" do
@time = DateTime.now
subject.send(attr_fields).should_receive(:to_datetime).and_return(@time)
subject.send(attr_fields).stub!(:valid?).and_return(true)
lambda { subject.save! }.should change(subject, attr).to(@time)
end
end
context "when #{attr} is not nil" do
before(:each) do
subject.send("#{attr}=", Time.now)
end
it "does NOT change #{attr}" do
lambda { subject.save! }.should_not change(subject, attr)
end
end
end
end
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