1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
require_relative '../../spec_helper'
describe "Regexp.last_match" do
it "returns MatchData instance when not passed arguments" do
/c(.)t/ =~ 'cat'
Regexp.last_match.should be_kind_of(MatchData)
end
it "returns the nth field in this MatchData when passed an Integer" do
/c(.)t/ =~ 'cat'
Regexp.last_match(1).should == 'a'
end
it "returns nil when there is no match" do
/foo/ =~ "TEST123"
Regexp.last_match(:test).should == nil
Regexp.last_match(1).should == nil
Regexp.last_match(Object.new).should == nil
Regexp.last_match("test").should == nil
end
describe "when given a Symbol" do
it "returns a named capture" do
/(?<test>[A-Z]+.*)/ =~ "TEST123"
Regexp.last_match(:test).should == "TEST123"
end
it "raises an IndexError when given a missing name" do
/(?<test>[A-Z]+.*)/ =~ "TEST123"
-> { Regexp.last_match(:missing) }.should raise_error(IndexError)
end
end
describe "when given a String" do
it "returns a named capture" do
/(?<test>[A-Z]+.*)/ =~ "TEST123"
Regexp.last_match("test").should == "TEST123"
end
end
describe "when given an Object" do
it "coerces argument to an index using #to_int" do
obj = mock("converted to int")
obj.should_receive(:to_int).and_return(1)
/(?<test>[A-Z]+.*)/ =~ "TEST123"
Regexp.last_match(obj).should == "TEST123"
end
it "raises a TypeError when unable to coerce" do
obj = Object.new
/(?<test>[A-Z]+.*)/ =~ "TEST123"
-> { Regexp.last_match(obj) }.should raise_error(TypeError)
end
end
end
|
