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
|
require_relative '../../spec_helper'
describe "String#unpack1" do
it "returns the first value of #unpack" do
"ABCD".unpack1('x3C').should == "ABCD".unpack('x3C')[0]
"\u{3042 3044 3046}".unpack1("U*").should == 0x3042
"aG9nZWZ1Z2E=".unpack1("m").should == "hogefuga"
"A".unpack1("B*").should == "01000001"
end
ruby_version_is "3.1" do
it "starts unpacking from the given offset" do
"ZZABCD".unpack1('x3C', offset: 2).should == "ABCD".unpack('x3C')[0]
"ZZZZaG9nZWZ1Z2E=".unpack1("m", offset: 4).should == "hogefuga"
"ZA".unpack1("B*", offset: 1).should == "01000001"
end
it "raises an ArgumentError when the offset is negative" do
-> { "a".unpack1("C", offset: -1) }.should raise_error(ArgumentError)
end
it "returns nil if the offset is at the end of the string" do
"a".unpack1("C", offset: 1).should == nil
end
it "raises an ArgumentError when the offset is larget than the string" do
-> { "a".unpack1("C", offset: 2) }.should raise_error(ArgumentError)
end
end
end
|
