Python: Quarantine slow tests into their own CI run

.github/workflows/ci.yml

@@ -36,6 +36,7 @@ jobs:
         - { path: nuget, name: nuget }
         - { path: omnibus, name: omnibus }
         - { path: python, name: python }
+        - { path: python, name: python_slow }
         - { path: terraform, name: terraform }
     env:
       BASE_IMAGE: ubuntu:18.04

python/spec/dependabot/python/file_updater/pip_compile_file_updater_spec.rb

@@ -223,7 +223,7 @@
       let(:generated_fixture_name) { "pip_compile_imports_setup.txt" }
       let(:setup_fixture_name) { "small.py" }
 
-      it "updates the requirements.txt" do
+      it "updates the requirements.txt", :slow do
         expect(updated_files.count).to eq(1)
         expect(updated_files.first.content).to include("attrs==18.1.0")
         expect(updated_files.first.content).
@@ -235,7 +235,7 @@
         expect(updated_files.first.content).to_not include("--hash=sha")
       end
 
-      context "that needs sanitizing" do
+      context "that needs sanitizing", :slow do
         let(:setup_fixture_name) { "small_needs_sanitizing.py" }
         it "updates the requirements.txt" do
           expect(updated_files.count).to eq(1)
@@ -497,7 +497,7 @@
       let(:dependency_requirements) { [] }
       let(:dependency_previous_requirements) { [] }
 
-      it "raises an error indicating the dependencies are not resolvable" do
+      it "raises an error indicating the dependencies are not resolvable", :slow do
         expect { updated_files }.to raise_error(Dependabot::DependencyFileNotResolvable) do |err|
           expect(err.message).to include(
             "There are incompatible versions in the resolved dependencies:\n  pyyaml==5.4"

python/spec/dependabot/python/file_updater/pipfile_file_updater_spec.rb

@@ -133,7 +133,7 @@
         )
       end
 
-      it "updates both files correctly" do
+      it "updates both files correctly", :slow do
         expect(updated_files.map(&:name)).to eq(%w(Pipfile Pipfile.lock))
 
         updated_lockfile = updated_files.find { |f| f.name == "Pipfile.lock" }
@@ -310,7 +310,7 @@
         let(:lockfile_fixture_name) { "git_source_no_ref.lock" }
 
         context "when updating the non-git dependency" do
-          it "doesn't update the git dependency" do
+          it "doesn't update the git dependency", :slow do
             expect(json_lockfile["default"]["requests"]["version"]).
               to eq("==2.18.4")
             expect(json_lockfile["default"]["pythonfinder"]).

python/spec/dependabot/python/update_checker/pip_compile_version_resolver_spec.rb

@@ -269,7 +269,7 @@
         }]
       end
 
-      it "raises a helpful error" do
+      it "raises a helpful error", :slow do
         expect { subject }.
           to raise_error(Dependabot::DependencyFileNotResolvable) do |error|
             expect(error.message).
@@ -337,7 +337,7 @@
       it { is_expected.to be >= Gem::Version.new("40.6.2") }
     end
 
-    context "with an import of the setup.py" do
+    context "with an import of the setup.py", :slow do
       let(:dependency_files) do
         [manifest_file, generated_file, setup_file, pyproject]
       end
@@ -375,7 +375,7 @@
       end
     end
 
-    context "with native dependencies that are not pre-built" do
+    context "with native dependencies that are not pre-built", :slow do
       let(:manifest_fixture_name) { "native_dependencies.in" }
       let(:generated_fixture_name) { "pip_compile_native_dependencies.txt" }
       let(:dependency_name) { "cryptography" }

python/spec/dependabot/python/update_checker/pipenv_version_resolver_spec.rb

@@ -247,7 +247,7 @@
         end
       end
 
-      context "for a resolution that has caused trouble in the past" do
+      context "for a resolution that has caused trouble in the past", :slow do
         let(:dependency_files) { [pipfile] }
         let(:pipfile_fixture_name) { "problematic_resolution" }
         let(:dependency_name) { "twilio" }

python/spec/dependabot/python/update_checker/poetry_version_resolver_spec.rb

@@ -204,7 +204,7 @@
       it { is_expected.to eq(Gem::Version.new("2.15.1")) }
     end
 
-    context "resolvable only if git references are preserved" do
+    context "resolvable only if git references are preserved", :slow do
       let(:pyproject_fixture_name) { "git_conflict.toml" }
       let(:lockfile_fixture_name) { "git_conflict.lock" }
       let(:dependency_name) { "django-widget-tweaks" }

python/spec/spec_helper.rb

@@ -9,3 +9,21 @@ def require_common_spec(path)
 end
 
 require "#{common_dir}/spec/spec_helper.rb"
+
+module SlowTestHelper
+  def self.slow_tests?
+    ENV["SUITE_NAME"] == "python_slow"
+  end
+end
+
+RSpec.configure do |config|
+  config.around do |example|
+    if SlowTestHelper.slow_tests? && example.metadata[:slow]
+      example.run
+    elsif !SlowTestHelper.slow_tests? && !example.metadata[:slow]
+      example.run
+    else
+      example.skip
+    end
+  end
+end