Strip surrounding whitespace from HTMLVariant name (#15776)

app/models/html_variant.rb

@@ -8,6 +8,8 @@ class HtmlVariant < ApplicationRecord
   has_many :html_variant_successes, dependent: :destroy
   has_many :html_variant_trials, dependent: :destroy
 
+  before_validation :strip_whitespace
+
   validates :group, inclusion: { in: GROUP_NAMES }
   validates :html, presence: true
   validates :name, uniqueness: true
@@ -77,4 +79,8 @@ class HtmlVariant < ApplicationRecord
   def allowed_image_host?(src)
     src.start_with?("https://res.cloudinary.com/") || src.start_with?(Images::Optimizer.get_imgproxy_endpoint)
   end
+
+  def strip_whitespace
+    name.strip!
+  end
 end

spec/models/html_variant_spec.rb

@@ -70,4 +70,9 @@ RSpec.describe HtmlVariant, type: :model do
     html_variant.save
     expect(Images::Optimizer).not_to have_received(:call)
   end
+
+  it "strips whitespace from the name" do
+    variant = create(:html_variant, name: " hello world ")
+    variant.reload.name.should eq "hello world"
+  end
 end