Some more coverage for csvfile (#70661)

* Some more coverage for csvfile

Change:
- Add a few tests

Test Plan:
- CI, new tests

Signed-off-by: Rick Elrod <rick@elrod.me>

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

@@ -3,12 +3,27 @@
   ignore_errors: yes
   register: no_keyword
 
+- set_fact:
+    this_will_error: "{{ lookup('csvfile', 'foo file=people.csv delimiter=, col=1 thisarg=doesnotexist') }}"
+  ignore_errors: yes
+  register: invalid_arg
+
+- set_fact:
+    this_will_error: "{{ lookup('csvfile', 'foo file=doesnotexist delimiter=, col=1') }}"
+  ignore_errors: yes
+  register: missing_file
+
 - name: Make sure we failed above
   assert:
     that:
       - no_keyword is failed
       - >
         "Search key is required but was not found" in no_keyword.msg
+      - >
+        "not in paramvals" in invalid_arg.msg
+      - missing_file is failed
+      - >
+        "need string or buffer" in missing_file.msg or "expected str, bytes or os.PathLike object" in missing_file.msg
 
 - name: Check basic comma-separated file
   assert: