Merge branch 'looser-time-in-specs' into 'master'

Add a be_like_time matcher and use it in specs

## What does this MR do?

Introduces a be_like_time matcher and refactors existing code to use it

## Are there points in the code the reviewer needs to double check?

A few sites use be_within(2.seconds) or 5.minutes - I didn't change those

## Why was this MR needed?

A custom matcher helps to document that we need to compare times loosely, and keeps the fudge factor from being declared in multiple places.

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Related to !6935

See merge request !6936

spec/models/issue/metrics_spec.rb

@@ -13,7 +13,7 @@ describe Issue::Metrics, models: true do
         metrics = subject.metrics
 
         expect(metrics).to be_present
-        expect(metrics.first_associated_with_milestone_at).to be_within(1.second).of(time)
+        expect(metrics.first_associated_with_milestone_at).to be_like_time(time)
       end
 
       it "does not record the second time an issue is associated with a milestone" do
@@ -24,7 +24,7 @@ describe Issue::Metrics, models: true do
         metrics = subject.metrics
 
         expect(metrics).to be_present
-        expect(metrics.first_associated_with_milestone_at).to be_within(1.second).of(time)
+        expect(metrics.first_associated_with_milestone_at).to be_like_time(time)
       end
     end
 
@@ -36,7 +36,7 @@ describe Issue::Metrics, models: true do
         metrics = subject.metrics
 
         expect(metrics).to be_present
-        expect(metrics.first_added_to_board_at).to be_within(1.second).of(time)
+        expect(metrics.first_added_to_board_at).to be_like_time(time)
       end
 
       it "does not record the second time an issue is associated with a list label" do
@@ -48,7 +48,7 @@ describe Issue::Metrics, models: true do
         metrics = subject.metrics
 
         expect(metrics).to be_present
-        expect(metrics.first_added_to_board_at).to be_within(1.second).of(time)
+        expect(metrics.first_added_to_board_at).to be_like_time(time)
       end
     end
   end

spec/models/merge_request/metrics_spec.rb

@@ -12,7 +12,7 @@ describe MergeRequest::Metrics, models: true do
       metrics = subject.metrics
 
       expect(metrics).to be_present
-      expect(metrics.merged_at).to be_within(1.second).of(time)
+      expect(metrics.merged_at).to be_like_time(time)
     end
   end
 end

spec/requests/api/issues_spec.rb

@@ -694,7 +694,7 @@ describe API::API, api: true  do
           title: 'new issue', labels: 'label, label2', created_at: creation_time
 
         expect(response).to have_http_status(201)
-        expect(Time.parse(json_response['created_at'])).to be_within(1.second).of(creation_time)
+        expect(Time.parse(json_response['created_at'])).to be_like_time(creation_time)
       end
     end
   end
@@ -895,7 +895,7 @@ describe API::API, api: true  do
         expect(response).to have_http_status(200)
 
         expect(json_response['labels']).to include 'label3'
-        expect(Time.parse(json_response['updated_at'])).to be_within(1.second).of(update_time)
+        expect(Time.parse(json_response['updated_at'])).to be_like_time(update_time)
       end
     end
   end

spec/requests/api/notes_spec.rb

@@ -217,7 +217,7 @@ describe API::API, api: true  do
           expect(response).to have_http_status(201)
           expect(json_response['body']).to eq('hi!')
           expect(json_response['author']['username']).to eq(user.username)
-          expect(Time.parse(json_response['created_at'])).to be_within(1.second).of(creation_time)
+          expect(Time.parse(json_response['created_at'])).to be_like_time(creation_time)
         end
       end
 

spec/services/create_deployment_service_spec.rb

@@ -201,7 +201,7 @@ describe CreateDeploymentService, services: true do
           time = Time.now
           Timecop.freeze(time) { service.execute }
 
-          expect(merge_request.reload.metrics.first_deployed_to_production_at).to be_within(1.second).of(time)
+          expect(merge_request.reload.metrics.first_deployed_to_production_at).to be_like_time(time)
         end
 
         it "doesn't set the time if the deploy's environment is not 'production'" do
@@ -227,13 +227,13 @@ describe CreateDeploymentService, services: true do
             time = Time.now
             Timecop.freeze(time) { service.execute }
 
-            expect(merge_request.reload.metrics.first_deployed_to_production_at).to be_within(1.second).of(time)
+            expect(merge_request.reload.metrics.first_deployed_to_production_at).to be_like_time(time)
 
             # Current deploy
             service = described_class.new(project, user, params)
             Timecop.freeze(time + 12.hours) { service.execute }
 
-            expect(merge_request.reload.metrics.first_deployed_to_production_at).to be_within(1.second).of(time)
+            expect(merge_request.reload.metrics.first_deployed_to_production_at).to be_like_time(time)
           end
         end
 

spec/services/git_push_service_spec.rb

@@ -364,7 +364,7 @@ describe GitPushService, services: true do
       it 'sets the metric for referenced issues' do
         execute_service(project, user, @oldrev, @newrev, @ref)
 
-        expect(issue.reload.metrics.first_mentioned_in_commit_at).to be_within(1.second).of(commit_time)
+        expect(issue.reload.metrics.first_mentioned_in_commit_at).to be_like_time(commit_time)
       end
 
       it 'does not set the metric for non-referenced issues' do

spec/support/matchers/be_like_time.rb

+RSpec::Matchers.define :be_like_time do |expected|
+  match do |actual|
+    expect(actual).to be_within(1.second).of(expected)
+  end
+
+  description do
+    "within one second of #{expected}"
+  end
+
+  failure_message do |actual|
+    "expected #{actual} to be within one second of #{expected}"
+  end
+end

spec/workers/pipeline_metrics_worker_spec.rb

@@ -23,7 +23,7 @@ describe PipelineMetricsWorker do
       it 'records the build start time' do
         subject
 
-        expect(merge_request.reload.metrics.latest_build_started_at).to be_within(1.second).of(pipeline.started_at)
+        expect(merge_request.reload.metrics.latest_build_started_at).to be_like_time(pipeline.started_at)
       end
 
       it 'clears the build end time' do
@@ -39,7 +39,7 @@ describe PipelineMetricsWorker do
       it 'records the build end time' do
         subject
 
-        expect(merge_request.reload.metrics.latest_build_finished_at).to be_within(1.second).of(pipeline.finished_at)
+        expect(merge_request.reload.metrics.latest_build_finished_at).to be_like_time(pipeline.finished_at)
       end
     end
   end