tests: improve testset names

Author: alyst

test/DerivativeTest.jl

@@ -19,7 +19,7 @@ const x = 1
 
 @testset "Derivative test vs Calculus.jl" begin
 
-@testset "$f" for f in DiffTests.NUMBER_TO_NUMBER_FUNCS
+@testset "$f(x::Number)::Number" for f in DiffTests.NUMBER_TO_NUMBER_FUNCS
     v = f(x)
     d = ForwardDiff.derivative(f, x)
     @test isapprox(d, Calculus.derivative(f, x), atol=FINITEDIFF_ERROR)
@@ -30,7 +30,7 @@ const x = 1
     @test isapprox(DiffResults.derivative(out), d)
 end
 
-@testset "$f" for f in DiffTests.NUMBER_TO_ARRAY_FUNCS
+@testset "$f(x::Number)::Array" for f in DiffTests.NUMBER_TO_ARRAY_FUNCS
     v = f(x)
     d = ForwardDiff.derivative(f, x)
 
@@ -47,7 +47,7 @@ end
     @test isapprox(DiffResults.derivative(out), d)
 end
 
-@testset "$f!" for f! in DiffTests.INPLACE_NUMBER_TO_ARRAY_FUNCS
+@testset "$f!(y::Vector, x::Number)" for f! in DiffTests.INPLACE_NUMBER_TO_ARRAY_FUNCS
     m, n = 3, 2
     y = fill(0.0, m, n)
     f = x -> (tmp = similar(y, promote_type(eltype(y), typeof(x)), m, n); f!(tmp, x); tmp)

test/GradientTest.jl

@@ -59,7 +59,7 @@ end
 ########################
 @testset "Comparison vs Calculus.jl" begin
 
-@testset "$f" for f in DiffTests.VECTOR_TO_NUMBER_FUNCS
+@testset "$f(x::Vector)::Number" for f in DiffTests.VECTOR_TO_NUMBER_FUNCS
     v = f(X)
     g = ForwardDiff.gradient(f, X)
     @test isapprox(g, Calculus.gradient(f, X), atol=FINITEDIFF_ERROR)

test/HessianTest.jl

@@ -68,7 +68,7 @@ cfgx = ForwardDiff.HessianConfig(sin, x)
 
 @testset "Comparison vs Calculus.jl" begin
 
-@testset "$f" for f in DiffTests.VECTOR_TO_NUMBER_FUNCS
+@testset "$f(x::Vector)::Number" for f in DiffTests.VECTOR_TO_NUMBER_FUNCS
     v = f(X)
     g = ForwardDiff.gradient(f, X)
     h = ForwardDiff.hessian(f, X)

test/JacobianTest.jl

@@ -104,7 +104,7 @@ end
 
 @testset "Comparison vs Calculus.jl" begin
 
-@testset "$f" for f in DiffTests.ARRAY_TO_ARRAY_FUNCS
+@testset "$f(x::Array)::Array" for f in DiffTests.ARRAY_TO_ARRAY_FUNCS
     v = f(X)
     j = ForwardDiff.jacobian(f, X)
     @test isapprox(j, Calculus.jacobian(x -> vec(f(x)), X, :forward), atol=1.3FINITEDIFF_ERROR)
@@ -126,7 +126,7 @@ end
     end
 end
 
-@testset "$f!" for f! in DiffTests.INPLACE_ARRAY_TO_ARRAY_FUNCS
+@testset "$f!(y::Array, x::Array)" for f! in DiffTests.INPLACE_ARRAY_TO_ARRAY_FUNCS
     v = fill!(similar(Y), 0.0)
     f!(v, X)
     j = ForwardDiff.jacobian(f!, fill!(similar(Y), 0.0), X)