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# -*- encoding: ascii-8bit -*-
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes.rb', __FILE__)
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
ruby_version_is ""..."2.5" do
it "raises a TypeError if other can't be converted to a string" do
lambda { "abc".casecmp(mock('abc')) }.should raise_error(TypeError)
end
end
ruby_version_is "2.5" do
it "returns nil if other can't be converted to a string" do
"abc".casecmp(mock('abc')).should be_nil
end
end
describe "in UTF-8 mode" do
describe "for non-ASCII characters" do
before :each do
@upper_a_tilde = "\xc3\x83"
@lower_a_tilde = "\xc3\xa3"
@upper_a_umlaut = "\xc3\x84"
@lower_a_umlaut = "\xc3\xa4"
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
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
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