Convert MPIRequirement test to spec.

1 files changed, 14 insertions, 0 deletions

diff --git a/Library/Homebrew/test/mpi_requirement_spec.rb b/Library/Homebrew/test/mpi_requirement_spec.rb
new file mode 100644
index 000000000..f32b27993
--- /dev/null
+++ b/Library/Homebrew/test/mpi_requirement_spec.rb
@@ -0,0 +1,14 @@
+require "requirements/mpi_requirement"
+
+describe MPIRequirement do
+  describe "::new" do
+    subject { described_class.new(*(wrappers + tags)) }
+    let(:wrappers) { [:cc, :cxx, :f77] }
+    let(:tags) { [:optional, "some-other-tag"] }
+
+    it "untangles wrappers and tags" do
+      expect(subject.lang_list).to eq(wrappers)
+      expect(subject.tags).to eq(tags)
+    end
+  end
+end