From 85cb9e5d87d6977195bd5ccda1c9d5f8dd630e10 Mon Sep 17 00:00:00 2001
From: Chris Rackauckas <accounts@chrisrackauckas.com>
Date: Wed, 2 Oct 2019 07:59:49 -0400
Subject: [PATCH] add ForwardDiff dependency and setup safetestsets

---
 Project.toml       |  7 ++++++-
 src/MyExample.jl   |  4 +++-
 src/extra_file.jl  |  1 +
 test/my_f_tests.jl | 13 +++++++++++++
 test/runtests.jl   | 11 ++---------
 5 files changed, 25 insertions(+), 11 deletions(-)
 create mode 100644 test/my_f_tests.jl

diff --git a/Project.toml b/Project.toml
index ed5582d..fc96965 100644
--- a/Project.toml
+++ b/Project.toml
@@ -3,11 +3,16 @@ uuid = "be72d800-e507-11e9-3551-81be3d289e2a"
 authors = ["Chris Rackauckas"]
 version = "0.1.0"
 
+[deps]
+ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
+
 [compat]
+ForwardDiff = "0.10"
 julia = "1"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
+SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 
 [targets]
-test = ["Test"]
+test = ["Test","SafeTestsets"]
diff --git a/src/MyExample.jl b/src/MyExample.jl
index 2f7fbaa..ee47da6 100644
--- a/src/MyExample.jl
+++ b/src/MyExample.jl
@@ -1,9 +1,11 @@
 module MyExample
 
+using ForwardDiff
+
 greet() = print("Hello World!")
 
 include("extra_file.jl")
 
-export my_f
+export my_f, derivative_of_my_f
 
 end # module
diff --git a/src/extra_file.jl b/src/extra_file.jl
index e111656..e2b309c 100644
--- a/src/extra_file.jl
+++ b/src/extra_file.jl
@@ -1 +1,2 @@
 my_f(x,y) = 2x+3y
+derivative_of_my_f(x,y) = ForwardDiff.derivative(x->my_f(x,y),x)
diff --git a/test/my_f_tests.jl b/test/my_f_tests.jl
new file mode 100644
index 0000000..2d59d1d
--- /dev/null
+++ b/test/my_f_tests.jl
@@ -0,0 +1,13 @@
+using MyExample
+using Test
+
+@testset "MyExample.jl" begin
+    # 2x + 3y
+    @test my_f(2,1) == 7
+    @test my_f(2,3) == 13
+    @test my_f(1,3) == 11
+end
+
+@testset "Derivative Tests" begin
+    @test derivative_of_my_f(2,1) == 2
+end
diff --git a/test/runtests.jl b/test/runtests.jl
index d6972ed..dc9f615 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -1,9 +1,2 @@
-using MyExample
-using Test
-
-@testset "MyExample.jl" begin
-    # 2x + 3y
-    @test my_f(2,1) == 7
-    @test my_f(2,3) == 13
-    @test my_f(1,3) == 11
-end
+using SafeTestsets
+@safetestset "My f tests" begin include("my_f_tests.jl") end