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# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)
describe :regexp_match, :shared => true do
it "returns nil if there is no match" do
/xyz/.send(@method,"abxyc").should be_nil
end
it "returns nil if the object is nil" do
/\w+/.send(@method, nil).should be_nil
end
end
describe "Regexp#=~" do
it_behaves_like(:regexp_match, :=~)
it "returns the index of the first character of the matching region" do
(/(.)(.)(.)/ =~ "abc").should == 0
end
ruby_version_is "1.9" do
it "returns the index too, when argument is a Symbol" do
(/(.)(.)(.)/ =~ :abc).should == 0
end
end
end
describe "Regexp#match" do
it_behaves_like(:regexp_match, :match)
it "returns a MatchData object" do
/(.)(.)(.)/.match("abc").should be_kind_of(MatchData)
end
ruby_version_is "1.9" do
it "returns a MatchData object, when argument is a Symbol" do
/(.)(.)(.)/.match(:abc).should be_kind_of(MatchData)
end
it "matches the input at a given position" do
/./.match("abc", 1).begin(0).should == 1
end
it "uses the start as a character offset" do
/(.+)/.match("hüllo", 2)[0].should == 'llo'
end
describe "when passed a block" do
it "yields the MatchData" do
/./.match("abc") {|m| ScratchPad.record m }
ScratchPad.recorded.should be_kind_of(MatchData)
end
it "returns the block result" do
/./.match("abc") { :result }.should == :result
end
it "does not yield if there is no match" do
ScratchPad.record []
/a/.match("b") {|m| ScratchPad << m }
ScratchPad.recorded.should == []
end
end
end
it "resets $~ if passed nil" do
# set $~
/./.match("a")
$~.should be_kind_of(MatchData)
/1/.match(nil)
$~.should be_nil
end
it "raises TypeError when the given argument cannot be coarce to String" do
f = 1
lambda { /foo/.match(f)[0] }.should raise_error(TypeError)
end
ruby_version_is ""..."1.9" do
it "coerces Exceptions into strings" do
f = Exception.new("foo")
/foo/.match(f)[0].should == "foo"
end
end
ruby_version_is "1.9" do
it "raises TypeError when the given argument is an Exception" do
f = Exception.new("foo")
lambda { /foo/.match(f)[0] }.should raise_error(TypeError)
end
end
end
describe "Regexp#~" do
it "matches against the contents of $_" do
$_ = "input data"
(~ /at/).should == 7
end
end
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