Make it possible to override the file name "rerun.txt"

README.md

@@ -89,6 +89,8 @@ Former `:color`, `:drb`, `:port` and `:profile` options are thus deprecated and
                                   # default: true
 
 :keep_failed => false             # Keep failed features until they pass
+                                  # This uses the temporary file `rerun.txt`;
+                                  # set `GUARD_CUCUMBER_RERUN_FILE` to override
                                   # default: true
 
 :run_all => { :cli => "-p" }      # Override any option when running all specs

guard-cucumber.gemspec

@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
   s.required_rubygems_version = ">= 1.3.6"
 
   s.add_dependency "guard-compat",       "~> 1.0"
-  s.add_dependency "cucumber",    ">= 1.3.0"
+  s.add_dependency "cucumber",    "~> 1.3"
   s.add_dependency "nenv",    "~> 0.1"
 
   s.add_development_dependency "bundler", "~> 1.6"

lib/guard/cucumber.rb

@@ -113,14 +113,22 @@ def run_on_modifications(paths)
     def read_failed_features
       failed = []
 
-      if File.exist?("rerun.txt")
-        failed = File.open("rerun.txt") { |file| file.read.split(" ") }
-        File.delete("rerun.txt")
+      if File.exist?(rerun_file)
+        failed = File.open(rerun_file) { |file| file.read.split(" ") }
+        File.delete(rerun_file)
       end
 
       failed
     end
 
+    def rerun_file
+      Guard::Cucumber.rerun_file
+    end
+
+    def self.rerun_file
+      ENV["GUARD_CUCUMBER_RERUN_FILE"] || "rerun.txt"
+    end
+
     # Change the `--format` cli option.
     #
     # @param [String] format the new format

lib/guard/cucumber/notification_formatter.rb

@@ -119,11 +119,15 @@ def notify_summary
       # Writes the `rerun.txt` file containing all failed features.
       #
       def write_rerun_features
-        File.open("rerun.txt", "w") do |f|
+        File.open(rerun_file, "w") do |f|
           f.puts @file_names.join(" ")
         end
       end
 
+      def rerun_file
+        Guard::Cucumber.rerun_file
+      end
+
       # Gives the icon name to use for the status.
       #
       # @param [Symbol] status the cucumber status

spec/guard/cucumber/notification_formatter_spec.rb

@@ -6,6 +6,9 @@
 
   context "after all features" do
     let(:step) { double("step") }
+    let(:step_match) { double("step_match") }
+    let(:feature_element) { double("feature_element") }
+    let(:file) { double("file") }
 
     before do
       allow(mother).to receive(:steps).with(:passed).and_return([step])
@@ -22,6 +25,20 @@
 
       subject.after_features(nil)
     end
+
+    before { ENV["GUARD_CUCUMBER_RERUN_FILE"] = "foo/bar.txt" }
+    after { ENV.delete "GUARD_CUCUMBER_RERUN_FILE" }
+
+    it "writes to the rerun file" do
+      allow(Guard::Compat::UI).to receive(:notify)
+      allow(step_match).to receive(:format_args)
+      subject.step_name(nil, step_match, :failed, nil, nil, nil)
+      expect(file).to receive(:puts).with("features/foo")
+      expect(File).to receive(:open).with("foo/bar.txt", "w").and_yield(file)
+      allow(feature_element).to receive(:location).and_return("features/foo")
+      subject.after_feature_element(feature_element)
+      subject.after_features(nil)
+    end
   end
 
   describe "#step_name" do

spec/guard/cucumber_spec.rb

@@ -148,6 +148,17 @@
       subject.run_on_modifications(["features/bar"])
     end
 
+    context "when GUARD_CUCUMBER_RERUN_FILE is set" do
+      before { ENV["GUARD_CUCUMBER_RERUN_FILE"] = "foo/bar.txt" }
+      after { ENV.delete "GUARD_CUCUMBER_RERUN_FILE" }
+
+      it "reads that file instead of rerun.txt" do
+        expect(runner).to receive(:run).and_return(false)
+        expect(File).to receive(:exist?).with("foo/bar.txt").and_return(false)
+        expect { subject.run_all }.to throw_symbol :task_has_failed
+      end
+    end
+
     context "with the :feature_sets option" do
       non_standard_feature_set = ["a_non_standard_feature_set"]
       let(:options) { { feature_sets: non_standard_feature_set } }