added the last two models

test/controllers/credentials_controller_test.rb

@@ -0,0 +1,48 @@
+require "test_helper"
+
+class CredentialsControllerTest < ActionDispatch::IntegrationTest
+  setup do
+    @credential = credentials(:one)
+  end
+
+  test "should get index" do
+    get credentials_url
+    assert_response :success
+  end
+
+  test "should get new" do
+    get new_credential_url
+    assert_response :success
+  end
+
+  test "should create credential" do
+    assert_difference("Credential.count") do
+      post credentials_url, params: { credential: { email: @credential.email, password: @credential.password } }
+    end
+
+    assert_redirected_to credential_url(Credential.last)
+  end
+
+  test "should show credential" do
+    get credential_url(@credential)
+    assert_response :success
+  end
+
+  test "should get edit" do
+    get edit_credential_url(@credential)
+    assert_response :success
+  end
+
+  test "should update credential" do
+    patch credential_url(@credential), params: { credential: { email: @credential.email, password: @credential.password } }
+    assert_redirected_to credential_url(@credential)
+  end
+
+  test "should destroy credential" do
+    assert_difference("Credential.count", -1) do
+      delete credential_url(@credential)
+    end
+
+    assert_redirected_to credentials_url
+  end
+end