From 13cac4e8d5890e11a3b14d9e898af7811a5e5ccd Mon Sep 17 00:00:00 2001
From: nickbair <bairinc@gmail.com>
Date: Mon, 2 Sep 2024 12:50:31 -0600
Subject: [PATCH 1/3] WIP generate tests

---
 lib/{ => code_gen}/code_generator.ex |  6 ++---
 lib/{ => code_gen}/config.ex         |  0
 lib/code_gen/test_generator.ex       | 34 ++++++++++++++++++++++++++++
 test/generated_test.exs              |  5 ++++
 4 files changed, 42 insertions(+), 3 deletions(-)
 rename lib/{ => code_gen}/code_generator.ex (97%)
 rename lib/{ => code_gen}/config.ex (100%)
 create mode 100644 lib/code_gen/test_generator.ex
 create mode 100644 test/generated_test.exs

diff --git a/lib/code_generator.ex b/lib/code_gen/code_generator.ex
similarity index 97%
rename from lib/code_generator.ex
rename to lib/code_gen/code_generator.ex
index 91a0370..6ec26fa 100644
--- a/lib/code_generator.ex
+++ b/lib/code_gen/code_generator.ex
@@ -161,15 +161,15 @@ defmodule ExOanda.CodeGenerator do
     end
   end
 
-   @doc false
-   def format_module_name(module_name) do
+  @doc false
+  def format_module_name(module_name) do
     module_name
     |> Atom.to_string()
     |> String.replace("Elixir.", "")
     |> String.to_atom()
   end
 
-  defp generate_module_name(module_name), do: String.to_atom("Elixir.ExOanda.#{module_name}")
+  defp generate_module_name(module_name), do: Module.concat([ExOanda, module_name])
 
   defp format_args(args) do
     for a <- args, do: {String.to_atom(a), [], nil}
diff --git a/lib/config.ex b/lib/code_gen/config.ex
similarity index 100%
rename from lib/config.ex
rename to lib/code_gen/config.ex
diff --git a/lib/code_gen/test_generator.ex b/lib/code_gen/test_generator.ex
new file mode 100644
index 0000000..30fdfe1
--- /dev/null
+++ b/lib/code_gen/test_generator.ex
@@ -0,0 +1,34 @@
+defmodule ExOanda.TestGenerator do
+  use ExUnit.Case, async: true
+
+  def generate_tests(configs) do
+    Enum.each(configs, fn %{module_name: module_name, functions: functions} ->
+      module = Module.concat([ExOandaTest, module_name, "Generated"])
+
+      test_functions =
+        Enum.map(functions, fn function ->
+          function_name = function.function_name
+          target_module = Module.concat([ExOanda, module_name])
+          arity = length(function.arguments) + 1 # Connection struct + configured arguments (less optional params)
+
+          quote do
+            test "#{unquote(module_name)}.#{unquote(function_name)} is generated." do
+              assert function_exported?(unquote(target_module), unquote(String.to_atom(function_name)), unquote(arity))
+            end
+
+            test "#{unquote(module_name)}.#{unquote(function_name)}! is generated." do
+              assert function_exported?(unquote(target_module), unquote(String.to_atom("#{function_name}!")), unquote(arity))
+            end
+          end
+        end)
+
+      module_body =
+        quote do
+          use ExUnit.Case, async: true
+          unquote_splicing(test_functions)
+        end
+
+      Module.create(module, module_body, __ENV__)
+    end)
+  end
+end
diff --git a/test/generated_test.exs b/test/generated_test.exs
new file mode 100644
index 0000000..400c5fa
--- /dev/null
+++ b/test/generated_test.exs
@@ -0,0 +1,5 @@
+defmodule ExOandaTest.GeneratedFunctions do
+  use ExUnit.Case, async: true
+
+  ExOanda.TestGenerator.generate_tests(ExOanda.Config.load_config())
+end

From 90d993ed85c426c01f81b1637a57702614c5e41e Mon Sep 17 00:00:00 2001
From: nickbair <bairinc@gmail.com>
Date: Mon, 2 Sep 2024 19:30:22 -0600
Subject: [PATCH 2/3] Add moduledoc tag

---
 lib/code_gen/test_generator.ex | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/code_gen/test_generator.ex b/lib/code_gen/test_generator.ex
index 30fdfe1..2d9460a 100644
--- a/lib/code_gen/test_generator.ex
+++ b/lib/code_gen/test_generator.ex
@@ -1,4 +1,6 @@
 defmodule ExOanda.TestGenerator do
+  @moduledoc false
+
   use ExUnit.Case, async: true
 
   def generate_tests(configs) do

From 28667abf3b70c55da7a5d3eb663733025bc2e56a Mon Sep 17 00:00:00 2001
From: nickbair <bairinc@gmail.com>
Date: Wed, 4 Sep 2024 16:45:08 -0600
Subject: [PATCH 3/3] Clean up

---
 lib/code_gen/config.ex | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/code_gen/config.ex b/lib/code_gen/config.ex
index dceebea..205366b 100644
--- a/lib/code_gen/config.ex
+++ b/lib/code_gen/config.ex
@@ -4,7 +4,7 @@ defmodule ExOanda.Config do
   use TypedEctoSchema
   import Ecto.Changeset
 
-  @yaml_file "./config.yml"
+  @config_file "./config.yml"
 
   @primary_key false
 
@@ -29,6 +29,7 @@ defmodule ExOanda.Config do
     end
   end
 
+  @doc false
   def changeset(config, params \\ %{}) do
     config
     |> cast(params, [:module_name, :description])
@@ -36,8 +37,9 @@ defmodule ExOanda.Config do
     |> cast_embed(:functions, with: &functions_changeset/2)
   end
 
+  @doc false
   def load_config do
-    @yaml_file
+    @config_file
     |> YamlElixir.read_all_from_file!()
     |> List.first()
     |> Map.fetch!("interfaces")