diff --git a/test/torch/component_test.exs b/test/torch/component_test.exs
index dab4d861..16c05e78 100644
--- a/test/torch/component_test.exs
+++ b/test/torch/component_test.exs
@@ -77,6 +77,109 @@ defmodule Torch.ComponentTest do
 
       assert html =~ ~s(<span class="invalid-feedback">can&#39;t be blank</span>)
     end
+
+    test "renders a string input type" do
+      html =
+        render_component(fn assigns ->
+          ~H"""
+            <.torch_input type="string" name="username" value="test_user" label="Username" />
+          """
+        end)
+
+      assert html =~ ~s(<input type="text" name="username" id="username" value="test_user")
+      assert html =~ ~s(<label for="username">\n  Username\n</label>)
+    end
+
+    test "renders a number input type" do
+      html =
+        render_component(fn assigns ->
+          ~H"""
+            <.torch_input type="number" name="age" value="25" label="Age" />
+          """
+        end)
+
+      assert html =~ ~s(<input type="number" name="age" id="age" value="25")
+      assert html =~ ~s(<label for="age">\n  Age\n</label>)
+    end
+
+    test "renders a date input type" do
+      html =
+        render_component(fn assigns ->
+          ~H"""
+            <.torch_input type="date" name="birthday" value="2023-01-01" label="Birthday" />
+          """
+        end)
+
+      assert html =~ ~s(<input type="date" name="birthday" id="birthday" value="2023-01-01")
+      assert html =~ ~s(<label for="birthday">\n  Birthday\n</label>)
+    end
+
+    test "renders with custom id" do
+      html =
+        render_component(fn assigns ->
+          ~H"""
+            <.torch_input type="text" name="username" id="custom-id" value="test_user" />
+          """
+        end)
+
+      assert html =~ ~s(<input type="text" name="username" id="custom-id" value="test_user")
+    end
+
+    test "renders with form field" do
+      form_data = %{
+        "user" => %{
+          "name" => "John Doe",
+          "email" => "john@example.com"
+        }
+      }
+
+      form = Phoenix.Component.to_form(form_data, as: :user)
+      field = Phoenix.HTML.FormField.to_form_field(form, :name)
+
+      html =
+        render_component(
+          fn assigns ->
+            ~H"""
+              <.torch_input field={@field} type="text" label="Name" />
+            """
+          end,
+          %{
+            field: field
+          }
+        )
+
+      assert html =~ ~s(<input type="text" name="user[name]" id="user_name" value="John Doe")
+      assert html =~ ~s(<label for="user_name">\n  Name\n</label>)
+    end
+
+    test "renders with form field and multiple flag" do
+      form_data = %{
+        "user" => %{
+          "roles" => ["admin", "editor"]
+        }
+      }
+
+      form = Phoenix.Component.to_form(form_data, as: :user)
+      field = Phoenix.HTML.FormField.to_form_field(form, :roles)
+
+      html =
+        render_component(
+          fn assigns ->
+            ~H"""
+              <.torch_input field={@field} type="select" multiple={true} options={@options} label="Roles" />
+            """
+          end,
+          %{
+            field: field,
+            options: [{"Admin", "admin"}, {"Editor", "editor"}, {"Viewer", "viewer"}]
+          }
+        )
+
+      assert html =~ ~s(<select id="user_roles" name="user[roles][]" class="" multiple)
+      assert html =~ ~s(<option selected value="admin">Admin</option>)
+      assert html =~ ~s(<option selected value="editor">Editor</option>)
+      assert html =~ ~s(<option value="viewer">Viewer</option>)
+    end
   end
 
   describe "torch_label/1" do
@@ -122,6 +225,24 @@ defmodule Torch.ComponentTest do
       assert html =~ ~s(<p class="torch-flash info">Information message)
       assert html =~ ~s(<p class="torch-flash error">Error message)
     end
+
+    test "renders empty flash messages" do
+      html =
+        render_component(
+          fn assigns ->
+            ~H"""
+              <.flash_messages flash={@flash} />
+            """
+          end,
+          %{
+            flash: %{}
+          }
+        )
+
+      assert html =~ ~s(<section id="torch-flash-messages">)
+      assert html =~ ~s(<div class="torch-container">)
+      refute html =~ ~s(<p class="torch-flash)
+    end
   end
 
   describe "torch_flash/1" do
@@ -135,6 +256,18 @@ defmodule Torch.ComponentTest do
 
       assert html =~ ~s(<p class="torch-flash info">This is a flash message.)
     end
+
+    test "renders a flash message with close button" do
+      html =
+        render_component(fn assigns ->
+          ~H"""
+            <.torch_flash flash_type="error" message="Error occurred." />
+          """
+        end)
+
+      assert html =~ ~s(<p class="torch-flash error">Error occurred.)
+      assert html =~ ~s(<button class="torch-flash-close">x</button>)
+    end
   end
 
   describe "translate_error/1" do
@@ -155,5 +288,11 @@ defmodule Torch.ComponentTest do
       translated = Component.translate_errors(errors, :username)
       assert translated == ["can't be blank"]
     end
+
+    test "returns empty list when field has no errors" do
+      errors = [username: {"can't be blank", []}, email: {"is invalid", []}]
+      translated = Component.translate_errors(errors, :password)
+      assert translated == []
+    end
   end
 end
diff --git a/test/torch/config_test.exs b/test/torch/config_test.exs
new file mode 100644
index 00000000..c218cf2e
--- /dev/null
+++ b/test/torch/config_test.exs
@@ -0,0 +1,68 @@
+defmodule Torch.ConfigTest do
+  use ExUnit.Case, async: true
+
+  describe "otp_app/0" do
+    test "returns the configured otp_app" do
+      # Save the original value
+      original_value = Application.get_env(:torch, :otp_app)
+
+      # Set a test value
+      Application.put_env(:torch, :otp_app, :test_app)
+      assert Torch.Config.otp_app() == :test_app
+
+      # Restore the original value
+      if original_value do
+        Application.put_env(:torch, :otp_app, original_value)
+      else
+        Application.delete_env(:torch, :otp_app)
+      end
+    end
+
+    test "returns nil when otp_app is not configured" do
+      # Save the original value
+      original_value = Application.get_env(:torch, :otp_app)
+
+      # Delete the config
+      Application.delete_env(:torch, :otp_app)
+      assert Torch.Config.otp_app() == nil
+
+      # Restore the original value
+      if original_value do
+        Application.put_env(:torch, :otp_app, original_value)
+      end
+    end
+  end
+
+  describe "i18n_backend/0" do
+    test "returns the configured i18n_backend" do
+      # Save the original value
+      original_value = Application.get_env(:torch, :i18n_backend)
+
+      # Set a test value
+      test_backend = Module.concat(["Test", "I18n", "Backend"])
+      Application.put_env(:torch, :i18n_backend, test_backend)
+      assert Torch.Config.i18n_backend() == test_backend
+
+      # Restore the original value
+      if original_value do
+        Application.put_env(:torch, :i18n_backend, original_value)
+      else
+        Application.delete_env(:torch, :i18n_backend)
+      end
+    end
+
+    test "returns default backend when i18n_backend is not configured" do
+      # Save the original value
+      original_value = Application.get_env(:torch, :i18n_backend)
+
+      # Delete the config
+      Application.delete_env(:torch, :i18n_backend)
+      assert Torch.Config.i18n_backend() == Torch.I18n.Backend
+
+      # Restore the original value
+      if original_value do
+        Application.put_env(:torch, :i18n_backend, original_value)
+      end
+    end
+  end
+end