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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
Code.require_file "test_helper.exs", __DIR__
defmodule RegexTest do
use ExUnit.Case, async: true
test :multiline do
refute Regex.match?(~r/^b$/, "a\nb\nc")
assert Regex.match?(~r/^b$/m, "a\nb\nc")
end
test :precedence do
assert {"aa", :unknown} |> elem(0) =~ ~r/(a)\1/
end
test :backreference do
assert "aa" =~ ~r/(a)\1/
end
test :compile! do
assert Regex.regex?(Regex.compile!("foo"))
assert_raise Regex.CompileError, ~r/position 0$/, fn ->
Regex.compile!("*foo")
end
end
test :compile do
{:ok, regex} = Regex.compile("foo")
assert Regex.regex?(regex)
assert {:error, _} = Regex.compile("*foo")
assert {:error, _} = Regex.compile("foo", "y")
end
test :compile_with_erl_opts do
{:ok, regex} = Regex.compile("foo\\sbar", [:dotall, {:newline, :anycrlf}])
assert "foo\nbar" =~ regex
end
test :regex? do
assert Regex.regex?(~r/foo/)
refute Regex.regex?(0)
end
test :source do
assert Regex.source(Regex.compile!("foo")) == "foo"
end
test :opts do
assert Regex.opts(Regex.compile!("foo", "i")) == "i"
end
test :unicode do
assert "josé" =~ ~r"\p{Latin}$"u
refute "£" =~ ~r/\p{Lu}/u
assert <<?<, 255, ?>>> =~ ~r/<.>/
refute <<?<, 255, ?>>> =~ ~r/<.>/u
end
test :names do
assert Regex.names(~r/(?<FOO>foo)/) == ["FOO"]
end
test :match? do
assert Regex.match?(~r/foo/, "foo")
refute Regex.match?(~r/foo/, "FOO")
assert Regex.match?(~r/foo/i, "FOO")
assert Regex.match?(~r/\d{1,3}/i, "123")
assert Regex.match?(~r/foo/, "afooa")
refute Regex.match?(~r/^foo/, "afooa")
assert Regex.match?(~r/^foo/, "fooa")
refute Regex.match?(~r/foo$/, "afooa")
assert Regex.match?(~r/foo$/, "afoo")
end
test :named_captures do
assert Regex.named_captures(~r/(?<foo>c)(?<bar>d)/, "abcd") == %{"bar" => "d", "foo" => "c"}
assert Regex.named_captures(~r/c(?<foo>d)/, "abcd") == %{"foo" => "d"}
assert Regex.named_captures(~r/c(?<foo>d)/, "no_match") == nil
assert Regex.named_captures(~r/c(?<foo>d|e)/, "abcd abce") == %{"foo" => "d"}
assert Regex.named_captures(~r/c(.)/, "cat") == %{}
end
test :sigil_R do
assert Regex.match?(~R/f#{1,3}o/, "f#o")
end
test :run do
assert Regex.run(~r"c(d)", "abcd") == ["cd", "d"]
assert Regex.run(~r"e", "abcd") == nil
end
test :run_with_all_names do
assert Regex.run(~r/c(?<foo>d)/, "abcd", capture: :all_names) == ["d"]
assert Regex.run(~r/c(?<foo>d)/, "no_match", capture: :all_names) == nil
assert Regex.run(~r/c(?<foo>d|e)/, "abcd abce", capture: :all_names) == ["d"]
end
test :run_with_indexes do
assert Regex.run(~r"c(d)", "abcd", return: :index) == [{2, 2}, {3, 1}]
assert Regex.run(~r"e", "abcd", return: :index) == nil
end
test :scan do
assert Regex.scan(~r"c(d|e)", "abcd abce") == [["cd", "d"], ["ce", "e"]]
assert Regex.scan(~r"c(?:d|e)", "abcd abce") == [["cd"], ["ce"]]
assert Regex.scan(~r"e", "abcd") == []
end
test :scan_with_all_names do
assert Regex.scan(~r/cd/, "abcd", capture: :all_names) == []
assert Regex.scan(~r/c(?<foo>d)/, "abcd", capture: :all_names) == [["d"]]
assert Regex.scan(~r/c(?<foo>d)/, "no_match", capture: :all_names) == []
assert Regex.scan(~r/c(?<foo>d|e)/, "abcd abce", capture: :all_names) == [["d"], ["e"]]
end
test :split do
assert Regex.split(~r",", "") == [""]
assert Regex.split(~r" ", "foo bar baz") == ["foo", "bar", "baz"]
assert Regex.split(~r" ", "foo bar baz", parts: 2) == ["foo", "bar baz"]
assert Regex.split(~r"\s", "foobar") == ["foobar"]
assert Regex.split(~r" ", " foo bar baz ") == ["", "foo", "bar", "baz", ""]
assert Regex.split(~r" ", " foo bar baz ", trim: true) == ["foo", "bar", "baz"]
assert Regex.split(~r"=", "key=") == ["key", ""]
assert Regex.split(~r"=", "=value") == ["", "value"]
end
test :replace do
assert Regex.replace(~r(d), "abc", "d") == "abc"
assert Regex.replace(~r(b), "abc", "d") == "adc"
assert Regex.replace(~r(b), "abc", "[&]") == "a[b]c"
assert Regex.replace(~r(b), "abc", "[\\&]") == "a[&]c"
assert Regex.replace(~r[(b)], "abc", "[\\1]") == "a[b]c"
assert Regex.replace(~r(d), "abcbe", "d") == "abcbe"
assert Regex.replace(~r(b), "abcbe", "d") == "adcde"
assert Regex.replace(~r(b), "abcbe", "[&]") == "a[b]c[b]e"
assert Regex.replace(~r(b), "abcbe", "[\\&]") == "a[&]c[&]e"
assert Regex.replace(~r[(b)], "abcbe", "[\\1]") == "a[b]c[b]e"
end
test :escape do
assert matches_escaped?(".")
refute matches_escaped?(".", "x")
assert matches_escaped?("[\w]")
refute matches_escaped?("[\w]", "x")
assert matches_escaped?("\\")
assert matches_escaped?("\\xff", "\\xff")
refute matches_escaped?("\\xff", "\xff")
assert matches_escaped?("(")
assert matches_escaped?("()")
assert matches_escaped?("(?:foo)")
assert matches_escaped?("\\A \\z")
assert matches_escaped?(" x ")
assert matches_escaped?(" x x ") # unicode spaces here
assert matches_escaped?("# lol")
assert matches_escaped?("\\A.^$*+?()[{\\| \t\n\xff\\z #hello\x{202F}\x{205F}")
end
defp matches_escaped?(string) do
matches_escaped?(string, string)
end
defp matches_escaped?(string, match) do
Regex.match? ~r/#{Regex.escape(string)}/simxu, match
end
end
|
