1 files changed, 40 insertions, 0 deletions
diff --git a/Library/Homebrew/test/test_comparableset.rb b/Library/Homebrew/test/test_comparableset.rb
new file mode 100644
index 000000000..d39ad51d6
--- /dev/null
+++ b/Library/Homebrew/test/test_comparableset.rb
@@ -0,0 +1,40 @@
+require 'testing_env'
+require 'extend/set'
+
+class ComparableSetTests < Test::Unit::TestCase
+  def setup
+    @set = ComparableSet.new
+  end
+
+  def test_merging_multiple_dependencies
+    @set << X11Dependency.new
+    @set << X11Dependency.new
+    assert_equal @set.count, 1
+    @set << Requirement.new
+    assert_equal @set.count, 2
+  end
+
+  def test_comparison_prefers_larger
+    @set << X11Dependency.new
+    @set << X11Dependency.new('2.6')
+    assert_equal @set.count, 1
+    assert_equal @set.to_a, [X11Dependency.new('2.6')]
+  end
+
+  def test_comparison_does_not_merge_smaller
+    @set << X11Dependency.new('2.6')
+    @set << X11Dependency.new
+    assert_equal @set.count, 1
+    assert_equal @set.to_a, [X11Dependency.new('2.6')]
+  end
+
+  def test_merging_sets
+    @set << X11Dependency.new
+    @set << Requirement.new
+    reqs = Set.new [X11Dependency.new('2.6'), Requirement.new]
+    @set.merge reqs
+
+    assert_equal @set.count, 2
+    assert_equal @set.find {|r| r.is_a? X11Dependency}, X11Dependency.new('2.6')
+  end
+end