Merge pull request #319 from JuliaArrays/seed-unit-tests

Make unit tests deterministic by seeding the RNG

Author: c42f

test/abstractarray.jl

@@ -86,13 +86,14 @@
     end
 
     @testset "full" begin
-        m_a = randn(2,2)
+        m_a = [0.831333 -1.91207; 0.200986  -0.69399]
         m_a = m_a*m_a.'
         m = SMatrix{2,2}(m_a)
         @test @inferred(full(Symmetric(m))) == m_a
         @test @inferred(full(Symmetric(m, :L))) == m_a
 
-        m_a = randn(2,2) + im*randn(2,2)
+        m_a = [0.34911-2.08735im   -0.438891-0.446692im;
+               -0.666533-0.652323im   0.834871-2.10413im]
         m_a = m_a*m_a'
         m = SMatrix{2,2}(m_a)
         @test @inferred(full(Hermitian(m))) == m_a

test/det.jl

@@ -6,7 +6,10 @@
     @test det(eye(SMatrix{3,3})*im) == det(eye(3,3)*im)
 
     @test det(@SMatrix [0 1 0; 1 0 0; 0 0 1]) == -1
-    m = randn(Float64, 4,4)
+    m = [0.570085  0.667147  0.264427  0.561446
+         0.115197  0.141744  0.83314   0.0457302
+         0.249238  0.841643  0.809544  0.908978
+         0.72068   0.6155    0.210278  0.607331]
     @test det(SMatrix{4,4}(m)) ≈ det(m)
     #triu/tril
     @test det(@SMatrix [1 2; 0 3]) == 3

test/indexing.jl

@@ -145,7 +145,7 @@
     end
 
     @testset "Indexing with empty vectors" begin
-        a = randn(2,2)
+        a = [1.0 2.0; 3.0 4.0]
         @test a[SVector{0,Int}()] == SVector{0,Float64}(())
         @test a[SVector{0,Int}(),SVector{0,Int}()] == SMatrix{0,0,Float64,0}(())
         b = copy(a)

test/linalg.jl

@@ -155,7 +155,7 @@ using StaticArrays, Base.Test
 
     @testset "trace" begin
         @test trace(@SMatrix [1.0 2.0; 3.0 4.0]) === 5.0
-        @test_throws DimensionMismatch trace(@SMatrix rand(5,4))
+        @test_throws DimensionMismatch trace(@SMatrix ones(5,4))
     end
 
     @testset "size zero" begin

test/runtests.jl

@@ -1,6 +1,11 @@
 using StaticArrays
 using Base.Test
 
+# We generate a lot of matrices using rand(), but unit tests should be
+# deterministic. Therefore seed the RNG here (and further down, to avoid test
+# file order dependence)
+srand(42)
+
 include("testutil.jl")
 include("SVector.jl")
 include("MVector.jl")
@@ -18,23 +23,23 @@ include("custom_types.jl")
 include("core.jl")
 include("abstractarray.jl")
 include("indexing.jl")
-include("mapreduce.jl")
-include("arraymath.jl")
+srand(42); include("mapreduce.jl")
+srand(42); include("arraymath.jl")
 include("broadcast.jl")
 include("linalg.jl")
-include("matrix_multiply.jl")
-include("triangular.jl")
+srand(42); include("matrix_multiply.jl")
+srand(42); include("triangular.jl")
 include("det.jl")
 include("inv.jl")
-include("solve.jl")
-include("eigen.jl")
+srand(42); include("solve.jl")
+srand(44); include("eigen.jl")
 include("expm.jl")
 include("sqrtm.jl")
 include("lyap.jl")
 include("lu.jl")
-include("qr.jl")
-include("chol.jl")
+srand(42); include("qr.jl")
+srand(42); include("chol.jl")
 include("deque.jl")
 include("io.jl")
 include("svd.jl")
-include("fixed_size_arrays.jl")
+srand(42); include("fixed_size_arrays.jl")

test/triangular.jl

@@ -1,5 +1,3 @@
-srand()
-
 @testset "Triangular-matrix multiplication" begin
     for n in (1, 2, 3, 4),
         eltyA in (Float64, Complex128, Int),