Dependabot cron job feature

common/spec/dependabot/config/file_spec.rb

@@ -48,6 +48,49 @@
       end
     end
 
+    describe "#parse" do
+      let(:config) { described_class.parse(fixture("configfile", "ignore-conditions.yml")) }
+      let(:update_config) { config.update_config("npm_and_yarn") }
+
+      it "loads ignore conditions" do
+        expect(update_config.ignore_conditions.length).to eq(3)
+      end
+
+      it "passes update-types" do
+        types_ignore = update_config.ignore_conditions.find { |ic| ic.dependency_name == "@types/node" }
+        expect(types_ignore.update_types).to eq(["version-update:semver-patch"])
+      end
+    end
+  end
+  describe "File for cron" do
+    let(:config) { described_class.parse(fixture("configfile", "npm-cron.yml")) }
+
+    describe "#update_config" do
+      it "maps package_manager to package-ecosystem" do
+        update_config = config.update_config("npm_and_yarn")
+        expect(update_config).to be_a(Dependabot::Config::UpdateConfig)
+        expect(update_config.commit_message_options.prefix).to eq("no directory")
+      end
+
+      it "matches directory" do
+        update_config = config.update_config("npm_and_yarn", directory: "/target")
+        expect(update_config).to be_a(Dependabot::Config::UpdateConfig)
+        expect(update_config.commit_message_options.prefix).to eq("with directory")
+      end
+
+      it "matches target-branch" do
+        update_config = config.update_config("npm_and_yarn", directory: "/target", target_branch: "the-awesome-branch")
+        expect(update_config).to be_a(Dependabot::Config::UpdateConfig)
+        expect(update_config.commit_message_options.prefix).to eq("with directory and branch")
+      end
+
+      it "returns empty when not found" do
+        update_config = config.update_config("bundler")
+        expect(update_config).to be_a(Dependabot::Config::UpdateConfig)
+        expect(update_config.commit_message_options.prefix).to be_nil
+      end
+    end
+
     describe "#parse" do
       let(:config) { described_class.parse(fixture("configfile", "ignore-conditions.yml")) }
       let(:update_config) { config.update_config("npm_and_yarn") }

common/spec/fixtures/configfile/npm-cron.yml

@@ -0,0 +1,25 @@
+# NOTE: prefix: values are used by common/spec/dependabot/config/file_spec.rb
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "cron"
+        cron-expression: "0 8 * * *"
+    commit-message:
+      prefix: "no directory"
+  - package-ecosystem: "npm"
+    directory: "/target"
+    schedule:
+      interval: "cron"
+        cron-expression: "0 8 * * *"
+    commit-message:
+      prefix: "with directory"
+  - package-ecosystem: "npm"
+    directory: "/target"
+    schedule:
+      interval: "cron"
+       cron-expression: "0 8 * * *"
+    target-branch: "the-awesome-branch"
+    commit-message:
+      prefix: "with directory and branch"