Fix array construction syntax on Julia 1.0

Author: gaurav-arya

src/TestUtils.jl

@@ -55,8 +55,9 @@ function test_fft_backend(array_constructor; test_real=true, test_inplace=true)
               15.0+0.0im  -4.5+2.598076211353316im  -4.5-2.598076211353316im;
               18.0+0.0im  -4.5+2.598076211353316im  -4.5-2.598076211353316im]),
             (collect(reshape(1:8, 2, 2, 2)), 1:2, true,
-             [10.0 + 0.0im -4.0 + 0.0im; -2.0 + 0.0im 0.0 + 0.0im;;;
-              26.0 + 0.0im -4.0 + 0.0im; -2.0 + 0.0im 0.0 + 0.0im]),
+             cat([10.0 + 0.0im -4.0 + 0.0im; -2.0 + 0.0im 0.0 + 0.0im],
+                 [26.0 + 0.0im -4.0 + 0.0im; -2.0 + 0.0im 0.0 + 0.0im],
+                 dims=3)),
             (collect(1:7) + im * collect(8:14), 1, false,
              [28.0 + 77.0im,
               -10.76782488800318 + 3.767824888003175im,
@@ -66,8 +67,9 @@ function test_fft_backend(array_constructor; test_real=true, test_inplace=true)
               -0.7088431389115866 - 6.291156861088417im,
               3.767824888003177 - 10.76782488800318im]),
             (collect(reshape(1:8, 2, 2, 2)) + im * reshape(9:16, 2, 2, 2), 1:2, false,
-             [10.0 + 42.0im -4.0 - 4.0im; -2.0 - 2.0im 0.0 + 0.0im;;;
-              26.0 + 58.0im -4.0 - 4.0im; -2.0 - 2.0im 0.0 + 0.0im]),
+             cat([10.0 + 42.0im -4.0 - 4.0im; -2.0 - 2.0im 0.0 + 0.0im],
+                 [26.0 + 58.0im -4.0 - 4.0im; -2.0 - 2.0im 0.0 + 0.0im],
+                 dims=3)),
         )
             x = array_constructor(_x) # dummy array that will be passed to plans
             x_complex = complex.(float.(x)) # for testing complex FFTs