From 80667eaefe6907ca4b3f7a1a6f8db64dcd479d76 Mon Sep 17 00:00:00 2001
From: Fredrik Ekre <fredrik.ekre@chalmers.se>
Date: Mon, 31 Jul 2017 13:07:34 +0200
Subject: [PATCH] add tests for Diagonal constructor (#23016)

---
 test/linalg/diagonal.jl | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/test/linalg/diagonal.jl b/test/linalg/diagonal.jl
index 40194a5f20a39..a159e441bb6cc 100644
--- a/test/linalg/diagonal.jl
+++ b/test/linalg/diagonal.jl
@@ -18,6 +18,16 @@ srand(1)
     end
     D = Diagonal(d)
     DM = diagm(d)
+
+    @testset "constructor" begin
+        for x in (d, GenericArray(d))
+            @test Diagonal(x)::Diagonal{elty,typeof(x)} == DM
+            @test Diagonal(x).diag === x
+            @test Diagonal{elty}(x)::Diagonal{elty,typeof(x)} == DM
+            @test Diagonal{elty}(x).diag === x
+        end
+    end
+
     @testset "Basic properties" begin
         @test eye(Diagonal{elty},n) == Diagonal(ones(elty,n))
         @test_throws ArgumentError size(D,0)