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# -*- encoding: utf-8 -*-
require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "String#casecmp independent of case" do
it "returns -1 when less than other" do
"a".casecmp("b").should == -1
"A".casecmp("b").should == -1
end
it "returns 0 when equal to other" do
"a".casecmp("a").should == 0
"A".casecmp("a").should == 0
end
it "returns 1 when greater than other" do
"b".casecmp("a").should == 1
"B".casecmp("a").should == 1
end
it "tries to convert other to string using to_str" do
other = mock('x')
other.should_receive(:to_str).and_return("abc")
"abc".casecmp(other).should == 0
end
it "returns nil if other can't be converted to a string" do
"abc".casecmp(mock('abc')).should be_nil
end
it "returns nil if incompatible encodings" do
"あれ".casecmp("れ".encode(Encoding::EUC_JP)).should be_nil
end
describe "in UTF-8 mode" do
describe "for non-ASCII characters" do
before :each do
@upper_a_tilde = "Ã"
@lower_a_tilde = "ã"
@upper_a_umlaut = "Ä"
@lower_a_umlaut = "ä"
end
it "returns -1 when numerically less than other" do
@upper_a_tilde.casecmp(@lower_a_tilde).should == -1
@upper_a_tilde.casecmp(@upper_a_umlaut).should == -1
end
it "returns 0 when numerically equal to other" do
@upper_a_tilde.casecmp(@upper_a_tilde).should == 0
end
it "returns 1 when numerically greater than other" do
@lower_a_umlaut.casecmp(@upper_a_umlaut).should == 1
@lower_a_umlaut.casecmp(@lower_a_tilde).should == 1
end
end
describe "for ASCII characters" do
it "returns -1 when less than other" do
"a".casecmp("b").should == -1
"A".casecmp("b").should == -1
end
it "returns 0 when equal to other" do
"a".casecmp("a").should == 0
"A".casecmp("a").should == 0
end
it "returns 1 when greater than other" do
"b".casecmp("a").should == 1
"B".casecmp("a").should == 1
end
end
end
describe "for non-ASCII characters" do
before :each do
@upper_a_tilde = "\xc3"
@lower_a_tilde = "\xe3"
end
it "returns -1 when numerically less than other" do
@upper_a_tilde.casecmp(@lower_a_tilde).should == -1
end
it "returns 0 when equal to other" do
@upper_a_tilde.casecmp("\xc3").should == 0
end
it "returns 1 when numerically greater than other" do
@lower_a_tilde.casecmp(@upper_a_tilde).should == 1
end
it "does not case fold" do
"ß".casecmp("ss").should == 1
end
end
describe "when comparing a subclass instance" do
it "returns -1 when less than other" do
b = StringSpecs::MyString.new "b"
"a".casecmp(b).should == -1
"A".casecmp(b).should == -1
end
it "returns 0 when equal to other" do
a = StringSpecs::MyString.new "a"
"a".casecmp(a).should == 0
"A".casecmp(a).should == 0
end
it "returns 1 when greater than other" do
a = StringSpecs::MyString.new "a"
"b".casecmp(a).should == 1
"B".casecmp(a).should == 1
end
end
end
describe 'String#casecmp? independent of case' do
it 'returns true when equal to other' do
'abc'.casecmp?('abc').should == true
'abc'.casecmp?('ABC').should == true
end
it 'returns false when not equal to other' do
'abc'.casecmp?('DEF').should == false
'abc'.casecmp?('def').should == false
end
it "tries to convert other to string using to_str" do
other = mock('x')
other.should_receive(:to_str).and_return("abc")
"abc".casecmp?(other).should == true
end
it "returns nil if incompatible encodings" do
"あれ".casecmp?("れ".encode(Encoding::EUC_JP)).should be_nil
end
describe 'for UNICODE characters' do
it 'returns true when downcase(:fold) on unicode' do
'äöü'.casecmp?('ÄÖÜ').should == true
end
end
describe "when comparing a subclass instance" do
it 'returns true when equal to other' do
a = StringSpecs::MyString.new "a"
'a'.casecmp?(a).should == true
'A'.casecmp?(a).should == true
end
it 'returns false when not equal to other' do
b = StringSpecs::MyString.new "a"
'b'.casecmp?(b).should == false
'B'.casecmp?(b).should == false
end
end
describe "in UTF-8 mode" do
describe "for non-ASCII characters" do
before :each do
@upper_a_tilde = "Ã"
@lower_a_tilde = "ã"
@upper_a_umlaut = "Ä"
@lower_a_umlaut = "ä"
end
it "returns true when they are the same with normalized case" do
@upper_a_tilde.casecmp?(@lower_a_tilde).should == true
end
it "returns false when they are unrelated" do
@upper_a_tilde.casecmp?(@upper_a_umlaut).should == false
end
it "returns true when they have the same bytes" do
@upper_a_tilde.casecmp?(@upper_a_tilde).should == true
end
end
end
it "case folds" do
"ß".casecmp?("ss").should be_true
end
it "returns nil if other can't be converted to a string" do
"abc".casecmp?(mock('abc')).should be_nil
end
end
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