diff --git a/test/categorical_algebra/Columns.jl b/test/categorical_algebra/Columns.jl
deleted file mode 100644
index 079b6b7cb..000000000
--- a/test/categorical_algebra/Columns.jl
+++ /dev/null
@@ -1,122 +0,0 @@
-module TestColumns
-
-using Test
-using Catlab.Columns
-
-# Mappings
-##########
-
-m = PartialVecMap{Int}()
-
-@test_throws BoundsError m[1]
-@test_throws BoundsError (m[1] = 2)
-
-dom_hint!(m, Base.OneTo(5))
-
-@test_throws AssertionError m[1]
-
-m[1] = 2
-
-@test m[1] == 2
-@test defined_indices(m) == [1]
-@test defined_values(m) == [2]
-
-undefine!(m, 1)
-
-@test_throws AssertionError m[1]
-@test defined_indices(m) == []
-@test defined_values(m) == []
-
-m = DefaultVecMap{Int,DefaultVal{Int,0}}()
-
-@test_throws BoundsError m[1]
-@test_throws BoundsError (m[1] = 2)
-
-dom_hint!(m, Base.OneTo(5))
-
-@test m[1] == 0
-
-m[1] = 2
-
-@test m[1] == 2
-@test defined_indices(m) == 1:5
-@test defined_values(m) == [2,0,0,0,0]
-
-undefine!(m, 1)
-
-@test m[1] == 0
-@test defined_indices(m) == 1:5
-@test defined_values(m) == [0,0,0,0,0]
-
-m = PartialDictMap{Symbol, Int}()
-
-@test_throws KeyError m[:a]
-
-m[:a] = 2
-
-@test m[:a] == 2
-
-@test [defined_indices(m)...] == [:a]
-@test [defined_values(m)...] == [2]
-
-undefine!(m, :a)
-
-@test Symbol[defined_indices(m)...] == Symbol[]
-@test Int[defined_values(m)...] == Int[]
-
-m = DefaultDictMap{Symbol, Vector{Int}, DefaultEmpty{Vector{Int}}}()
-
-@test m[:a] == []
-
-m[:a] = [2,3,4]
-
-@test m[:a] == [2,3,4]
-
-@test [defined_indices(m)...] == [:a]
-@test [defined_values(m)...] == [[2,3,4]]
-
-# InvMappings
-#############
-
-m = PartialVecMap{Symbol}(4)
-i = TrivialIM{Int,Symbol}()
-
-m[1] = :a
-m[2] = :b
-m[3] = :b
-m[4] = :c
-
-@test inverse(m, i, :b) == [2,3]
-
-undefine!(m, 3)
-
-@test inverse(m, i, :b) == [2]
-@test inverse(m, i, :c) == [4]
-
-i = StoredPreimageIM(DefaultDictMap{Symbol, Set{Int}, DefaultEmpty{Set{Int}}}())
-add_mapping!(i, :a, 1)
-add_mapping!(i, :b, 2)
-add_mapping!(i, :c, 4)
-
-@test [inverse(m, i, :b)...] == [2]
-
-remove_mapping!(i, :c, 4)
-
-@test [inverse(m, i, :c)...] == []
-
-# Columns
-#########
-
-m = column_type(Hom(NoIndex))()
-m = column_type(Hom(Index))()
-m = column_type(Hom(UniqueIndex))()
-
-m = column_type(Attr(NoIndex, String))()
-m = column_type(Attr(Index, String))()
-m = column_type(Attr(UniqueIndex, String))()
-
-m = column_type(Attr(NoIndex, nothing)){String}()
-m = column_type(Attr(Index, nothing)){String}()
-m = column_type(Attr(UniqueIndex, nothing)){String}()
-
-end