Add tests for cat_tuple_types

Author: simonschoelly

test/runtests.jl

@@ -1,6 +1,4 @@
 using GraphDatasets
 using Test
 
-@testset "GraphDatasets.jl" begin
-    # Write your tests here.
-end
+include("utils.jl")

test/utils.jl

@@ -0,0 +1,22 @@
+using GraphDatasets: cat_tuple_types
+
+@testset "cat_tuple_types" begin
+
+    @test cat_tuple_types(Tuple{}, Tuple{}) == Tuple{}
+    @test cat_tuple_types(Tuple{}, Tuple{Int, String}) == Tuple{Int, String}
+    @test cat_tuple_types(Tuple{Int, String}, Tuple{}) == Tuple{Int, String}
+
+    @test cat_tuple_types(Tuple{}, @NamedTuple{a::String, b::Int}) == @NamedTuple{a::String, b::Int}
+    @test cat_tuple_types(@NamedTuple{a::String, b::Int}, Tuple{}) == @NamedTuple{a::String, b::Int}
+
+    @test cat_tuple_types(Tuple{Int, String}, Tuple{Char, Vector, Tuple}) == Tuple{Int, String, Char, Vector, Tuple}
+
+    @test cat_tuple_types(@NamedTuple{a::Int, b::String}, @NamedTuple{c::Char, d::Vector, e::Tuple}) ==
+        @NamedTuple{a::Int, b::String, c::Char, d::Vector, e::Tuple}
+
+    @test cat_tuple_types(Tuple{Int}, Tuple{}, Tuple{Char, Int}, Tuple{String}) ==
+            Tuple{Int, Char, Int, String}
+
+    @test cat_tuple_types(@NamedTuple{a::String}, Tuple{}, @NamedTuple{b::Int}, @NamedTuple{c::String, e::Char}) ==
+            @NamedTuple{a::String, b::Int, c::String, e::Char}
+end