Generate branch/file names more randomly to avoid failures.

- Tests would randomly fail because of naming conflicts.
- Use a `random_git_name` method instead of using `FFaker` directly.

spec/models/cycle_analytics/code_spec.rb

@@ -7,13 +7,13 @@ describe 'CycleAnalytics#code', feature: true do
   subject { CycleAnalytics.new(project, from: from_date) }
 
   def create_commit_referencing_issue(issue)
-    sha = project.repository.commit_file(user, FFaker::Product.brand, "content", "Commit for ##{issue.iid}", "master", false)
+    sha = project.repository.commit_file(user, random_git_name, "content", "Commit for ##{issue.iid}", "master", false)
     commit = project.repository.commit(sha)
     commit.create_cross_references!(user)
   end
 
   def create_merge_request_closing_issue(issue, message: nil)
-    source_branch = FFaker::Product.brand
+    source_branch = random_git_name
     project.repository.add_branch(user, source_branch, 'master')
 
     opts = {

spec/models/cycle_analytics/plan_spec.rb

@@ -7,7 +7,7 @@ describe 'CycleAnalytics#plan', feature: true do
   subject { CycleAnalytics.new(project, from: from_date) }
 
   def create_commit_referencing_issue(issue)
-    sha = project.repository.commit_file(user, FFaker::Product.brand, "content", "Commit for ##{issue.iid}", "master", false)
+    sha = project.repository.commit_file(user, random_git_name, "content", "Commit for ##{issue.iid}", "master", false)
     commit = project.repository.commit(sha)
     commit.create_cross_references!
   end

spec/models/cycle_analytics/review_spec.rb

@@ -7,9 +7,9 @@ describe 'CycleAnalytics#review', feature: true do
   subject { CycleAnalytics.new(project, from: from_date) }
 
   def create_merge_request_closing_issue(issue)
-    source_branch = FFaker::Product.brand
+    source_branch = random_git_name
     project.repository.add_branch(user, source_branch, 'master')
-    sha = project.repository.commit_file(user, FFaker::Product.brand, "content", "commit message", source_branch, false)
+    sha = project.repository.commit_file(user, random_git_name, "content", "commit message", source_branch, false)
     project.repository.commit(sha)
 
     opts = {
@@ -22,7 +22,6 @@ describe 'CycleAnalytics#review', feature: true do
     MergeRequests::CreateService.new(project, user, opts).execute
   end
 
-
   def merge_merge_requests_closing_issue(issue)
     merge_requests = issue.closed_by_merge_requests
     merge_requests.each { |merge_request| MergeRequests::MergeService.new(project, user).execute(merge_request) }

spec/support/git_helpers.rb

+module GitHelpers
+  def random_git_name
+    "#{FFaker::Product.brand}-#{FFaker::Product.brand}-#{rand(1000)}"
+  end
+end
+
+RSpec.configure do |config|
+  config.include GitHelpers
+end