gem_module: Integration tests for bindir option

tests/integration/targets/gem/tasks/main.yml

@@ -178,3 +178,40 @@
     that:
       - install_gem_result is changed
       - gem_search.files | length == 0
+
+# Custom directory for executables (--bindir)
+- name: Install gem with custom bindir
+  gem:
+    name: gist
+    state: present
+    bindir: "{{ output_dir }}/custom_bindir"
+  register: install_gem_result
+
+- name: Get stats of gem executable
+  stat:
+    path: "{{ output_dir }}/custom_bindir/gist"
+  register: gem_bindir_stat
+
+- name: Ensure gem executable was installed in custom directory
+  assert:
+    that:
+      - install_gem_result is changed
+      - gem_bindir_stat.stat.exists and gem_bindir_stat.stat.isreg
+
+- name: Remove gem with custom bindir
+  gem:
+    name: gist
+    state: absent
+    bindir: "{{ output_dir }}/custom_bindir"
+  register: install_gem_result
+
+- name: Get stats of gem executable
+  stat:
+    path: "{{ output_dir }}/custom_bindir/gist"
+  register: gem_bindir_stat
+
+- name: Ensure gem executable was removed from custom directory
+  assert:
+    that:
+      - install_gem_result is changed
+      - not gem_bindir_stat.stat.exists