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require "compilers"
require "software_spec"
describe CompilerSelector do
subject { described_class.new(software_spec, versions, compilers) }
let(:compilers) { [:clang, :gcc, :gnu] }
let(:software_spec) { SoftwareSpec.new }
let(:cc) { :clang }
let(:versions) do
double(
gcc_4_0_build_version: Version::NULL,
gcc_build_version: Version.create("5666"),
llvm_build_version: Version::NULL,
clang_build_version: Version.create("425"),
)
end
before(:each) do
allow(versions).to receive(:non_apple_gcc_version) do |name|
case name
when "gcc-4.8" then Version.create("4.8.1")
when "gcc-4.7" then Version.create("4.7.1")
else Version::NULL
end
end
end
describe "#compiler" do
it "raises an error if no matching compiler can be found" do
software_spec.fails_with(:clang)
software_spec.fails_with(:gcc)
software_spec.fails_with(gcc: "4.8")
software_spec.fails_with(gcc: "4.7")
expect { subject.compiler }.to raise_error(CompilerSelectionError)
end
it "defaults to cc" do
expect(subject.compiler).to eq(cc)
end
it "returns gcc if it fails with clang" do
software_spec.fails_with(:clang)
expect(subject.compiler).to eq(:gcc)
end
it "returns clang if it fails with gcc" do
software_spec.fails_with(:gcc)
expect(subject.compiler).to eq(:clang)
end
it "returns clang if it fails with non-Apple gcc" do
software_spec.fails_with(gcc: "4.8")
expect(subject.compiler).to eq(:clang)
end
it "still returns gcc-4.8 if it fails with gcc without a specific version" do
software_spec.fails_with(:clang)
software_spec.fails_with(:gcc)
expect(subject.compiler).to eq("gcc-4.8")
end
it "returns gcc if it fails with clang and llvm" do
software_spec.fails_with(:clang)
expect(subject.compiler).to eq(:gcc)
end
it "returns clang if it fails with gcc and llvm" do
software_spec.fails_with(:gcc)
expect(subject.compiler).to eq(:clang)
end
example "returns gcc if it fails with a specific gcc version" do
software_spec.fails_with(:clang)
software_spec.fails_with(gcc: "4.8")
expect(subject.compiler).to eq(:gcc)
end
example "returns a lower version of gcc if it fails with the highest version" do
software_spec.fails_with(:clang)
software_spec.fails_with(:gcc)
software_spec.fails_with(gcc: "4.8")
expect(subject.compiler).to eq("gcc-4.7")
end
it "prefers gcc" do
software_spec.fails_with(:clang)
software_spec.fails_with(:gcc)
expect(subject.compiler).to eq("gcc-4.8")
end
it "raises an error when gcc is missing" do
allow(versions).to receive(:gcc_build_version).and_return(Version::NULL)
software_spec.fails_with(:clang)
software_spec.fails_with(gcc: "4.8")
software_spec.fails_with(gcc: "4.7")
expect { subject.compiler }.to raise_error(CompilerSelectionError)
end
it "raises an error when llvm and gcc are missing" do
allow(versions).to receive(:gcc_build_version).and_return(Version::NULL)
software_spec.fails_with(:clang)
software_spec.fails_with(gcc: "4.8")
software_spec.fails_with(gcc: "4.7")
expect { subject.compiler }.to raise_error(CompilerSelectionError)
end
end
end
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