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require 'spec_helper'
require 'extlib/blank'
describe Object do
it 'should provide blank?' do
Object.new.should respond_to(:blank?)
end
it 'should be blank if it is nil' do
object = Object.new
class << object
def nil?; true end
end
object.should be_blank
end
it 'should be blank if it is empty' do
{}.should be_blank
[].should be_blank
end
it 'should not be blank if not nil or empty' do
Object.new.should_not be_blank
[nil].should_not be_blank
{ nil => 0 }.should_not be_blank
end
end
describe Numeric do
it 'should provide blank?' do
1.should respond_to(:blank?)
end
it 'should never be blank' do
1.should_not be_blank
end
end
describe NilClass do
it 'should provide blank?' do
nil.should respond_to(:blank?)
end
it 'should always be blank' do
nil.should be_blank
end
end
describe TrueClass do
it 'should provide blank?' do
true.should respond_to(:blank?)
end
it 'should never be blank' do
true.should_not be_blank
end
end
describe FalseClass do
it 'should provide blank?' do
false.should respond_to(:blank?)
end
it 'should always be blank' do
false.should be_blank
end
end
describe String do
it 'should provide blank?' do
'string'.should respond_to(:blank?)
end
it 'should be blank if empty' do
''.should be_blank
end
it 'should be blank if it only contains whitespace' do
' '.should be_blank
" \r \n \t ".should be_blank
end
it 'should not be blank if it contains non-whitespace' do
' a '.should_not be_blank
end
end
|
