pattern_matching_map_contents_test.exs

defmodule SomeTest do
  use ExUnit.Case
  
    def some_function(%{arg1: "thing", arg3: _}) do
        :two
    end
    def some_function(%{arg1: "thing", arg2: _}) do
        :one
    end
    def some_function(_) do
        :total_miss
    end

    test ":one was called" do
        assert :one == some_function(%{arg1: "thing", arg2: 2})
    end
    test ":two was called" do
        # fails and returns :total_miss
        assert :two == some_function(%{arg1: "thing", arg3: 3})
    end
end

You don't have a method with both arg2 and arg3. You have arg1 + arg2 and arg1 + arg3.

Thank you. That seems to work. Now to figure out why my actual code isn't behaving correctly.