1 files changed, 34 insertions, 0 deletions
diff --git a/spec/migrations/20200511145545_change_variable_interpolation_format_in_common_metrics_spec.rb b/spec/migrations/20200511145545_change_variable_interpolation_format_in_common_metrics_spec.rb
new file mode 100644
index 00000000000..f9e8a7ee6e9
--- /dev/null
+++ b/spec/migrations/20200511145545_change_variable_interpolation_format_in_common_metrics_spec.rb
@@ -0,0 +1,34 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require Rails.root.join('db', 'post_migrate', '20200511145545_change_variable_interpolation_format_in_common_metrics')
+
+describe ChangeVariableInterpolationFormatInCommonMetrics, :migration do
+  let(:prometheus_metrics) { table(:prometheus_metrics) }
+
+  let!(:common_metric) do
+    prometheus_metrics.create!(
+      identifier: 'system_metrics_kubernetes_container_memory_total',
+      query: 'avg(sum(container_memory_usage_bytes{container_name!="POD",' \
+      'pod_name=~"^%{ci_environment_slug}-(.*)",namespace="%{kube_namespace}"})' \
+      ' by (job)) without (job)  /1024/1024/1024',
+      project_id: nil,
+      title: 'Memory Usage (Total)',
+      y_label: 'Total Memory Used (GB)',
+      unit: 'GB',
+      legend: 'Total (GB)',
+      group: -5,
+      common: true
+    )
+  end
+
+  it 'updates query to use {{}}' do
+    expected_query = 'avg(sum(container_memory_usage_bytes{container_name!="POD",' \
+    'pod_name=~"^{{ci_environment_slug}}-(.*)",namespace="{{kube_namespace}}"})' \
+    ' by (job)) without (job)  /1024/1024/1024'
+
+    migrate!
+
+    expect(common_metric.reload.query).to eq(expected_query)
+  end
+end