Test error thrown by formula macro

ararslan · ararslan · commit 81c5c4e13e92 · 2016-12-17T10:56:07.000-08:00
diff --git a/test/formula.jl b/test/formula.jl
@@ -105,4 +105,7 @@ t = Terms(@formula(y ~ x1 * x2 * x3))
 ## @test t.terms == [:x2, :(x1&x2)]    # == [:(1 & x1)]
 ## @test t.eterms == [:y, :x1, :x2]
 
+# Incorrect formula separator
+@test_throws ErrorException eval(:(@formula(y => x + 1)))
+
 end
