[in-review] Fix search by company name and search by industry name

lib/companies/helper.ex

@@ -5,8 +5,18 @@ defmodule Companies.Helpers do
 
   @default_page_size "16"
 
-  def searched_list(list, _params) do
-    list
+  def searched_list(list, params) do
+    search_param = params["search"]["text"]
+
+    if search_param do
+      list
+      |> Enum.filter(
+        &(String.contains?(String.downcase(&1.name), String.downcase(search_param)) or
+            String.contains?(String.downcase(&1.industry), String.downcase(search_param)))
+      )
+    else
+      list
+    end
   end
 
   def sorted_list(list, params) do

test/companies/helper_test.exs

@@ -0,0 +1,77 @@
+defmodule Companies.HelperTest do
+  use ExUnit.Case
+
+  alias Companies.Helpers
+
+  describe "searched_list/2" do
+    test "returns the original list if search_param is not provided" do
+      list = [
+        %{name: "Company A", industry: "Tech"},
+        %{name: "Company B", industry: "Health"}
+      ]
+
+      params = %{"search" => %{"text" => nil}}
+
+      assert Helpers.searched_list(list, params) == list
+    end
+
+    test "filters the list based on search_param" do
+      list = [
+        %{name: "Company A", industry: "Tech"},
+        %{name: "Company B", industry: "Health"}
+      ]
+
+      params = %{"search" => %{"text" => "tech"}}
+
+      result = Helpers.searched_list(list, params)
+
+      assert length(result) == 1
+      assert Enum.at(result, 0) == %{name: "Company A", industry: "Tech"}
+    end
+
+    test "handles case-insensitive search" do
+      list = [
+        %{name: "Company A", industry: "Tech"},
+        %{name: "Company B", industry: "Health"}
+      ]
+
+      params = %{"search" => %{"text" => "COMPANY"}}
+
+      result = Helpers.searched_list(list, params)
+
+      assert length(result) == 2
+      assert Enum.at(result, 0) == %{name: "Company A", industry: "Tech"}
+      assert Enum.at(result, 1) == %{name: "Company B", industry: "Health"}
+    end
+
+    test "handles an empty list" do
+      list = []
+
+      params = %{"search" => %{"text" => "tech"}}
+
+      assert Helpers.searched_list(list, params) == []
+    end
+
+    test "handles an empty search_param" do
+      list = [
+        %{name: "Company A", industry: "Tech"},
+        %{name: "Company B", industry: "Health"}
+      ]
+
+      params = %{"search" => %{"text" => ""}}
+
+      assert Helpers.searched_list(list, params) == list
+    end
+
+    test "handles a non-matching search_param" do
+      list = [
+        %{name: "Company A", industry: "Tech"},
+        %{name: "Company B", industry: "Health"}
+      ]
+
+      params = %{"search" => %{"text" => "Finance"}}
+
+      assert Helpers.searched_list(list, params) == []
+    end
+  end
+end