Add syntax sugar for MPIDependency

Closes Homebrew/homebrew#20797.

1 files changed, 12 insertions, 0 deletions

diff --git a/Library/Homebrew/test/test_mpi_dependency.rb b/Library/Homebrew/test/test_mpi_dependency.rb
new file mode 100644
index 000000000..06f158805
--- /dev/null
+++ b/Library/Homebrew/test/test_mpi_dependency.rb
@@ -0,0 +1,12 @@
+require 'testing_env'
+require 'requirements/mpi_dependency'
+
+class MPIDependencyTests < Test::Unit::TestCase
+  def test_initialize_untangles_tags_and_wrapper_symbols
+    wrappers = [:cc, :cxx, :f77]
+    tags = [:optional, 'some-other-tag']
+    dep = MPIDependency.new(*wrappers + tags)
+    assert_equal wrappers, dep.lang_list
+    assert_equal tags, dep.tags
+  end
+end