File: casecmp_spec.rb

package info (click to toggle)
jruby 1.7.26-1%2Bdeb9u1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 84,572 kB
  • sloc: ruby: 669,910; java: 253,056; xml: 35,152; ansic: 9,187; yacc: 7,267; cpp: 5,244; sh: 1,036; makefile: 345; jsp: 48; tcl: 40
file content (122 lines) | stat: -rw-r--r-- 3,307 bytes parent folder | download
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
# -*- 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('abc')
    def other.to_str() "abc" end
    "abc".casecmp(other).should == 0
  end

  it "raises a TypeError if other can't be converted to a string" do
    lambda { "abc".casecmp(mock('abc')) }.should raise_error(TypeError)
  end

  describe "in UTF-8 mode" do
    before :each do
      @kcode = $KCODE
      $KCODE = "utf-8"
    end

    after :each do
      $KCODE = @kcode
    end

    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

    # These could be encoded in Latin-1, but there's no way
    # to express that in 1.8.
    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