52 lines
1.3 KiB
Ruby
52 lines
1.3 KiB
Ruby
require_relative '../../spec_helper'
|
|
|
|
describe "Symbol#<=> with Symbol" do
|
|
it "compares individual characters based on their ascii value" do
|
|
ascii_order = Array.new(256) { |x| x.chr.to_sym }
|
|
sort_order = ascii_order.sort
|
|
sort_order.should == ascii_order
|
|
end
|
|
|
|
it "returns -1 when self is less than other" do
|
|
(:this <=> :those).should == -1
|
|
end
|
|
|
|
it "returns 0 when self is equal to other" do
|
|
(:yep <=> :yep).should == 0
|
|
end
|
|
|
|
it "returns 1 when self is greater than other" do
|
|
(:yoddle <=> :griddle).should == 1
|
|
end
|
|
|
|
it "considers symbol that comes lexicographically first to be less if the symbols have same size" do
|
|
(:aba <=> :abc).should == -1
|
|
(:abc <=> :aba).should == 1
|
|
end
|
|
|
|
it "doesn't consider shorter string to be less if longer string starts with shorter one" do
|
|
(:abc <=> :abcd).should == -1
|
|
(:abcd <=> :abc).should == 1
|
|
end
|
|
|
|
it "compares shorter string with corresponding number of first chars of longer string" do
|
|
(:abx <=> :abcd).should == 1
|
|
(:abcd <=> :abx).should == -1
|
|
end
|
|
end
|
|
|
|
describe "Symbol#<=>" do
|
|
it "returns nil if other is a String" do
|
|
(:abc <=> "abc").should be_nil
|
|
end
|
|
|
|
it "returns nil if other is a Fixnum" do
|
|
(:abc <=> 1).should be_nil
|
|
end
|
|
|
|
it "returns nil if other is an object" do
|
|
obj = mock("string <=>")
|
|
(:abc <=> obj).should be_nil
|
|
end
|
|
end
|