additional tests

JuliaLang · Sep 4, 2018 · b7d48b9 · b7d48b9
1 parent 4f9028c
commit b7d48b9
Showing 1 changed file with 18 additions and 2 deletions.
diff --git a/stdlib/Statistics/test/runtests.jl b/stdlib/Statistics/test/runtests.jl
@@ -88,8 +88,17 @@ end
     @test mean(skipmissing([1, missing, 2])) === 1.5
     @test isequal(mean(Complex{Float64}[]), NaN+NaN*im)
     @test isequal(mean(skipmissing(Complex{Float64}[])), NaN+NaN*im)
+    @test mean(Complex{Float64}[]) isa Complex{Float64}
+    @test mean(skipmissing(Complex{Float64}[])) isa Complex{Float64}
     @test isequal(mean(abs, Complex{Float64}[]), NaN)
     @test isequal(mean(abs, skipmissing(Complex{Float64}[])), NaN)
+    @test mean(abs, Complex{Float64}[]) isa Float64
+    @test mean(abs, skipmissing(Complex{Float64}[])) isa Float64
+    @test_throws MethodError mean([])
+    @test_throws MethodError mean(skipmissing([]))
+    @test_throws MethodError mean((1 for i in 2:1))
+    @test mean(Int[]) isa Float64
+    @test mean(skipmissing(Int[])) isa Float64
 
     # Check that small types are accumulated using wider type
     for T in (Int8, UInt8)
@@ -250,8 +259,15 @@ end
         @test f(skipmissing([1, missing, 2]), 0) === f([1, 2], 0)
     end
 
-    @test isequal(mean(Complex{Float64}[]), NaN)
-    @test isequal(mean(skipmissing(Complex{Float64}[])), NaN)
+    @test isequal(var(Complex{Float64}[]), NaN)
+    @test isequal(var(skipmissing(Complex{Float64}[])), NaN)
+    @test var(Complex{Float64}[]) isa Float64
+    @test var(skipmissing(Complex{Float64}[])) isa Float64
+    @test_throws MethodError var([])
+    @test_throws MethodError var(skipmissing([]))
+    @test_throws MethodError var((1 for i in 2:1))
+    @test var(Int[]) isa Float64
+    @test var(skipmissing(Int[])) isa Float64
 end
 
 function safe_cov(x, y, zm::Bool, cr::Bool)