Add latest changes from gitlab-org/gitlab@master

1 files changed, 39 insertions, 0 deletions

diff --git a/spec/lib/gitlab/utils/json_size_estimator_spec.rb b/spec/lib/gitlab/utils/json_size_estimator_spec.rb
new file mode 100644
index 00000000000..ae24e25558a
--- /dev/null
+++ b/spec/lib/gitlab/utils/json_size_estimator_spec.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Utils::JsonSizeEstimator do
+  RSpec::Matchers.define :match_json_bytesize_of do |expected|
+    match do |actual|
+      actual == expected.to_json.bytesize
+    end
+  end
+
+  def estimate(object)
+    described_class.estimate(object)
+  end
+
+  [
+    [],
+    [[[[]]]],
+    [1, "str", 3.14, ["str", { a: -1 }]],
+    {},
+    { a: {} },
+    { a: { b: { c: [1, 2, 3], e: Time.now, f: nil } } },
+    { 100 => 500 },
+    { '狸' => '狸' },
+    nil
+  ].each do |example|
+    it { expect(estimate(example)).to match_json_bytesize_of(example) }
+  end
+
+  it 'calls #to_s on unknown object' do
+    klass = Class.new do
+      def to_s
+        'hello'
+      end
+    end
+
+    expect(estimate(klass.new)).to match_json_bytesize_of(klass.new.to_s) # "hello"
+  end
+end