1 files changed, 60 insertions, 1 deletions
diff --git a/skate/zippy_test.go b/skate/zippy_test.go
index 3c1911c..4c9ed32 100644
--- a/skate/zippy_test.go
+++ b/skate/zippy_test.go
@@ -277,7 +277,7 @@ func TestRemoveSelfLinks(t *testing.T) {
 		},
 		{
 			brefs:  []*BiblioRef{},
-			result: nil,
+			result: []*BiblioRef{},
 		},
 		{
 			brefs: []*BiblioRef{
@@ -308,3 +308,62 @@ func TestRemoveSelfLinks(t *testing.T) {
 		}
 	}
 }
+
+func TestDeduplicateBrefs(t *testing.T) {
+	var cases = []struct {
+		brefs  []*BiblioRef
+		result []*BiblioRef
+	}{
+		{
+			brefs:  nil,
+			result: nil,
+		},
+		{
+			brefs:  []*BiblioRef{},
+			result: nil,
+		},
+		{
+			brefs: []*BiblioRef{
+				&BiblioRef{Key: "123", MatchStatus: StatusStrong.Short()},
+				&BiblioRef{Key: "123", MatchStatus: StatusExact.Short()},
+			},
+			result: []*BiblioRef{
+				&BiblioRef{Key: "123", MatchStatus: StatusExact.Short()},
+			},
+		},
+		{
+			brefs: []*BiblioRef{
+				&BiblioRef{Key: "123", MatchStatus: StatusStrong.Short()},
+				&BiblioRef{Key: "123", MatchStatus: StatusUnmatched.Short()},
+			},
+			result: []*BiblioRef{
+				&BiblioRef{Key: "123", MatchStatus: StatusStrong.Short()},
+			},
+		},
+		{
+			brefs: []*BiblioRef{
+				&BiblioRef{Key: "123", MatchStatus: StatusStrong.Short()},
+				&BiblioRef{Key: "123", MatchStatus: StatusWeak.Short()},
+			},
+			result: []*BiblioRef{
+				&BiblioRef{Key: "123", MatchStatus: StatusStrong.Short()},
+			},
+		},
+		{
+			brefs: []*BiblioRef{
+				&BiblioRef{Key: "123", MatchStatus: StatusStrong.Short()},
+				&BiblioRef{Key: "123", MatchStatus: StatusAmbiguous.Short()},
+			},
+			result: []*BiblioRef{
+				&BiblioRef{Key: "123", MatchStatus: StatusStrong.Short()},
+			},
+		},
+	}
+	for i, c := range cases {
+		result := deduplicateBrefs(c.brefs)
+		if !reflect.DeepEqual(result, c.result) {
+			t.Fatalf("[%d]: got %v, want %v (%v)",
+				i, result, c.result, pretty.Diff(result, c.result))
+		}
+	}
+}