QE-10881 Fix output when feature is empty (#315)

There is a bug introduced recently that causes cucu to not be able to
handle empty feature files

features/cli/report_basics.feature

@@ -246,7 +246,7 @@ Feature: Report basics
       """
       Feature: nothing to see here
       """
-     When I run the command "cucu run {CUCU_RESULTS_DIR}/empty_features --results {CUCU_RESULTS_DIR}/empty_features_results --generate-report --report {CUCU_RESULTS_DIR}/empty_features_report" and save stdout to "STDOUT", stderr to "STDERR" and expect exit code "1"
+     When I run the command "cucu run {CUCU_RESULTS_DIR}/empty_features --results {CUCU_RESULTS_DIR}/empty_features_results --generate-report --report {CUCU_RESULTS_DIR}/empty_features_report" and save stdout to "STDOUT", stderr to "STDERR" and expect exit code "0"
       And I start a webserver at directory "{CUCU_RESULTS_DIR}/empty_features_report/" and save the port to the variable "PORT"
       And I open a browser at the url "http://{HOST_ADDRESS}:{PORT}/index.html"
      Then I should see the text "No data available in table"

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "cucu"
-version = "0.119.0"
+version = "0.120.0"
 license = "MIT"
 description = ""
 authors = ["Rodney Gomes <[email protected]>"]

src/cucu/formatter/json.py

@@ -253,6 +253,9 @@ def write_json_footer(self):
         self.stream.write("\n]\n")
 
     def write_json_feature(self, feature_data):
+        if "elements" not in feature_data:
+            return
+
         filtered_scenarios = [
             x
             for x in feature_data["elements"]

src/cucu/formatter/junit.py

@@ -210,9 +210,7 @@ def attributes(self, tag):
             scenarios = filtered_scenarios
 
             if len(scenarios) == 0:
-                # we had a suite of just skipped results and should remove the
-                # results all together
-                os.remove(output_filepath)
+                # we had a suite of just skipped results
                 return
 
         # calculate with the latest data