Library/Homebrew/test/cxxstdlib_spec.rb


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

require "formula"
require "cxxstdlib"

describe CxxStdlib do
  let(:clang) { CxxStdlib.create(:libstdcxx, :clang) }
  let(:gcc) { CxxStdlib.create(:libstdcxx, :gcc) }
  let(:gcc40) { CxxStdlib.create(:libstdcxx, :gcc_4_0) }
  let(:gcc42) { CxxStdlib.create(:libstdcxx, :gcc_4_2) }
  let(:gcc48) { CxxStdlib.create(:libstdcxx, "gcc-4.8") }
  let(:gcc49) { CxxStdlib.create(:libstdcxx, "gcc-4.9") }
  let(:lcxx) { CxxStdlib.create(:libcxx, :clang) }
  let(:purec) { CxxStdlib.create(nil, :clang) }

  describe "#compatible_with?" do
    specify "Apple libstdcxx intercompatibility" do
      expect(clang).to be_compatible_with(gcc)
      expect(clang).to be_compatible_with(gcc42)
    end

    specify "compatibility with itself" do
      expect(gcc).to be_compatible_with(gcc)
      expect(gcc48).to be_compatible_with(gcc48)
      expect(clang).to be_compatible_with(clang)
    end

    specify "Apple/GNU libstdcxx incompatibility" do
      expect(clang).not_to be_compatible_with(gcc48)
      expect(gcc48).not_to be_compatible_with(clang)
    end

    specify "GNU cross-version incompatibility" do
      expect(gcc48).not_to be_compatible_with(gcc49)
      expect(gcc49).not_to be_compatible_with(gcc48)
    end

    specify "libstdcxx and libcxx incompatibility" do
      expect(clang).not_to be_compatible_with(lcxx)
      expect(lcxx).not_to be_compatible_with(clang)
    end

    specify "compatibility for non-cxx software" do
      expect(purec).to be_compatible_with(clang)
      expect(clang).to be_compatible_with(purec)
      expect(purec).to be_compatible_with(purec)
      expect(purec).to be_compatible_with(gcc48)
      expect(gcc48).to be_compatible_with(purec)
    end
  end

  describe "#apple_compiler?" do
    it "returns true for Apple compilers" do
      expect(clang).to be_an_apple_compiler
      expect(gcc).to be_an_apple_compiler
      expect(gcc42).to be_an_apple_compiler
    end

    it "returns false for non-Apple compilers" do
      expect(gcc48).not_to be_an_apple_compiler
    end
  end

  describe "#type_string" do
    specify "formatting" do
      expect(clang.type_string).to eq("libstdc++")
      expect(lcxx.type_string).to eq("libc++")
    end
  end
end