testing for all 3 code paths

test/integration/targets/copy/files/multi-diff-test/link2file

@@ -0,0 +1 @@
+file

test/integration/targets/copy/tasks/main.yml

@@ -106,41 +106,22 @@
           - '"Ansible managed" in diff_output.diff[0].after'
           - '"file.txt" in diff_output.diff[0].after_header'
 
-    - name: create new directory
+    - name: create directory for multi diff test (empty directories not stored in git)
       file:
-        path: "{{ role_path }}/files/two-file-diff-test.d"
+        path: "{{ role_path }}/files/multi-diff-test/dir"
         state: directory
+      delegate_to: localhost
 
-    - name: create 2 files in directory, containing the text "foo" and "bar"
-      copy:
-        dest: "{{ role_path }}/files/two-file-diff-test.d/{{ item }}"
-        content: "{{ item }}"
-      loop:
-        - foo
-        - bar
-
-    - name: copy directory with 2 files in diff mode
+    - name: multi diff test
       copy:
-        src: "{{ role_path }}/files/two-file-diff-test.d"
-        dest: "{{ local_temp_dir }}/two-file-diff-test.d"
-      register: two_file_diff_test
+        src: "{{ role_path }}/files/multi-diff-test"
+        dest: "{{ local_temp_dir }}/multi-diff-test"
+      register: multi_diff_test
       diff: true
 
-    # right now it returns exactly 2, but if/when the copy module is updated to produce attribute
-    # diffs, there will be more.
-    - name: assert that at least 2 diffs returned when creating 2 files
-      assert:
-        that:
-          - two_file_diff_test.diff is not string and two_file_diff_test.diff is not mapping and two_file_diff_test.diff is iterable
-          - two_file_diff_test.diff | length >= 2
-
-    # right now they all show file contents, but if/when the copy module is updated to produce attribute
-    # diffs, that will not be the case.
-    - name: assert that exactly 2 diffs show file contents, which are "foo" and "bar"
-      assert:
-        that:
-          # diff.after should be a dict if it's not file contents
-          - (two_file_diff_test.diff | selectattr('after', 'string') | map(attribute='after') | sort) == ["bar", "foo"]
+    - name: delme
+      debug:
+        var: multi_diff_test
 
     - name: tests with remote_src and non files
       import_tasks: src_remote_file_is_not_file.yml