Add test for julia/Matrix.jl

Author: albinahlback

test/Rings-test.jl

@@ -1,4 +1,5 @@
 include("julia/Integers-test.jl")
+include("julia/Matrix-test.jl")
 include("broadcasting-test.jl")
 
 # artificially low cutoffs for testing purposes

test/julia/Matrix-test.jl

@@ -0,0 +1,34 @@
+@testset "Julia.Matrix.manipulation" begin
+  r, c = 1, 2
+  A = zero_matrix(Int, r, c)
+  A[1, :] = [10, -2]
+  B = Int[10 -2]
+
+  @test A == B
+  @test number_of_rows(A) == r
+  @test number_of_columns(A) == c
+end
+
+@testset "Julia.Matrix.array_creation" begin
+  M = matrix_ring(ZZ, 2)
+  m1 = M(ZZ[1 2; 3 4])
+  m2 = M(ZZ[1 0; 0 1])
+  arr = Array(M, 2)
+  arr[1] = deepcopy(m1)
+  arr[2] = deepcopy(m2)
+  @test arr[1] == m1
+  @test arr[2] == m2
+end
+
+@testset "Julia.Matrix.permutations" begin
+  M = matrix_ring(ZZ, 2, 2)
+  m0 = ZZ[1 2; 3 4]
+  m1 = ZZ[2 3; 4 5]
+  m2 = ZZ[3 4; 5 6]
+  m3 = ZZ[4 5; 6 7]
+  m = [m0 m1; m2 m3]
+  rm = swap_rows(m, 2, 1)
+  cm = swap_columns(m, 1, 2)
+  @test rm == [m2 m3; m0 m1]
+  @test cm == [m1 m0; m3 m2]
+end