blob: cba40d70f1225880f688491d39a2b15e15cbd9f9 (
plain)
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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes.rb', __FILE__)
describe "String#start_with?" do
it "returns true only if beginning match" do
s = "hello"
s.start_with?('h').should be_true
s.start_with?('hel').should be_true
s.start_with?('el').should be_false
end
it "returns true only if any beginning match" do
"hello".start_with?('x', 'y', 'he', 'z').should be_true
end
it "returns true if the search string is empty" do
"hello".start_with?("").should be_true
"".start_with?("").should be_true
end
it "converts its argument using :to_str" do
s = "hello"
find = mock('h')
find.should_receive(:to_str).and_return("h")
s.start_with?(find).should be_true
end
it "ignores arguments not convertible to string" do
"hello".start_with?().should be_false
lambda { "hello".start_with?(1) }.should raise_error(TypeError)
lambda { "hello".start_with?(["h"]) }.should raise_error(TypeError)
lambda { "hello".start_with?(1, nil, "h") }.should raise_error(TypeError)
end
it "uses only the needed arguments" do
find = mock('h')
find.should_not_receive(:to_str)
"hello".start_with?("h",find).should be_true
end
it "works for multibyte strings" do
"céréale".start_with?("cér").should be_true
end
ruby_version_is "2.5" do
it "supports regexps" do
regexp = /[h1]/
"hello".start_with?(regexp).should be_true
"1337".start_with?(regexp).should be_true
"foxes are 1337".start_with?(regexp).should be_false
"chunky\n12bacon".start_with?(/12/).should be_false
end
it "supports regexps with ^ and $ modifiers" do
regexp1 = /^\d{2}/
regexp2 = /\d{2}$/
"12test".start_with?(regexp1).should be_true
"test12".start_with?(regexp1).should be_false
"12test".start_with?(regexp2).should be_false
"test12".start_with?(regexp2).should be_false
end
it "sets Regexp.last_match if it returns true" do
regexp = /test-(\d+)/
"test-1337".start_with?(regexp).should be_true
Regexp.last_match.should_not be_nil
Regexp.last_match[1].should == "1337"
$1.should == "1337"
"test-asdf".start_with?(regexp).should be_false
Regexp.last_match.should be_nil
$1.should be_nil
end
end
end
|
