pirj · December 2, 2020 21:22 · Dec 2, 2020
diff --git a/with_zones_spec.rb b/with_zones_spec.rb
@@ -0,0 +1,37 @@
+RSpec.shared_examples 'with different zones', :within_time_zones do
+  block = metadata[:block] # the block passed to `context 'some test'`
+  parent_example_group = superclass # the `describe 'root'` one
+
+  # around { } # skip running examples in `context 'some test'`
+  # or
+  # metadata[:skip] = true # skip the whole `context 'some test'`
+  # or
+  parent_example_group.children.delete(self)
+
+  metadata[:within_time_zones].each do |time_zone|
+    # generates a group in the parent
+    group = parent_example_group.context "with tz=#{time_zone}", &block
+
+    group.around do |example|
+      $tz = time_zone
+      example.run
+      $tz = nil
+    end
+
+    group.let(:tz) { time_zone } # optional
+  end
+end
+
+RSpec.describe 'root' do
+  describe 'inner' do
+    context 'some test', within_time_zones: ['Madrid', 'Minsk'] do
+      it { expect(tz).to eq(tz) }
+      it { expect($tz).to eq($tz) }
+    end
+    context '2' do
+      it '22' do
+        expect(22).to eq 22
+      end
+    end
+  end
+end
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