add tests to Between and All

Author: bkamins

test/runtests.jl

@@ -27,4 +27,30 @@ end
 
 end
 
+@testset "Between" begin
+
+    for x in (1, :a), y in (1, :a)
+        b = DataAPI.Between(x, y)
+        @test b.first == x
+        @test b.last == y
+    end
+
+    @test_throws MethodError DataAPI.Between(true, 1)
+    @test_throws MethodError DataAPI.Between(:a, 0x01)
+
+end
+
+@testset "All" begin
+
+    @test DataAPI.All().cols == ()
+    @test DataAPI.All(1).cols == (1,)
+    @test DataAPI.All([1,2,3], :a).cols == ([1, 2, 3], :a)
+
+    a = DataAPI.All(DataAPI.All())
+    @test length(a.cols) == 1
+    @test a.cols[1] isa DataAPI.All
+    @test a.cols[1].cols == ()
+
+end
+
 end # @testset "DataAPI"