feat: add an option to include file line

README.md

@@ -73,6 +73,7 @@ The JUnit style XML report for this project looks like this:
 - `report_dir` (binary - default `Mix.Project.app_path()`): the directory to which the formatter will write the report. Do not end it with a slash. **IMPORTANT!!** `JUnitFormatter` will **NOT** create the directory. If you are pointing to a directory that is outside _build then it is your duty to clean it and to be sure it exists.
 - `prepend_project_name?` (boolean - default `false`): tells if the report file should have the name of the project as a prefix. See the "Umbrella" part of the documentation.
 - `include_filename?` (boolean - default `false`): dictates whether `<testcase>`s in the XML report should include a "file" attribute of the relative path to the file of the test. Note that this defaults to false because not all JUnit ingesters will accept a file attribute.
+- `include_file_line?` (boolean - default `false`): only has effect when `include_filename?` is `true`. Dictates whether `file` attribute should include line of the test after a colon (e.g. `test/file_test.exs:123`).
 
 Example configuration:
 

lib/formatter.ex

@@ -191,7 +191,7 @@ defmodule JUnitFormatter do
       time: format_time(test.time)
     ]
 
-    attrs = maybe_add_filename(attrs, test.tags.file)
+    attrs = maybe_add_filename(attrs, test.tags.file, test.tags.line)
 
     {
       :testcase,
@@ -225,9 +225,18 @@ defmodule JUnitFormatter do
   defp message({type, reason, _}) when is_atom(type), do: "#{type}: #{inspect(reason)}"
   defp message({type, reason, _}), do: "#{inspect(type)}: #{inspect(reason)}"
 
-  defp maybe_add_filename(attrs, path) do
+  defp maybe_add_filename(attrs, path, line) do
     if Application.get_env(:junit_formatter, :include_filename?) do
-      Keyword.put(attrs, :file, Path.relative_to_cwd(path))
+      path = Path.relative_to_cwd(path)
+
+      file =
+        if Application.get_env(:junit_formatter, :include_file_line?) do
+          "#{path}:#{line}"
+        else
+          path
+        end
+
+      Keyword.put(attrs, :file, file)
     else
       attrs
     end

test/formatter_test.exs

@@ -251,6 +251,18 @@ defmodule FormatterTest do
         assert xpath(output, ~x{//testsuite/testcase/@file}s) == "test/formatter_test.exs"
       end
 
+      test "has file attribute with line when configured to" do
+        defsuite do
+          test "it will fail", do: assert(false)
+        end
+
+        put_config(:include_filename?, true)
+        put_config(:include_file_line?, true)
+        output = run_and_capture_output()
+
+        assert xpath(output, ~x{//testsuite/testcase/@file}s) == "test/formatter_test.exs:256"
+      end
+
       test "does not have file attribute when not configured to" do
         defsuite do
           test "it will fail", do: assert(false)