fix: Clarify tests (#203)

* fix: Initial example

* fix: Switch to other runner

* fix: Clarify other usages

Author: tmathern

tests/test_unit_tests.py

@@ -577,7 +577,8 @@ def test_sign_and_read_is_not_embedded(self):
                     "data": {
                         "actions": [
                             {
-                                "action": "c2pa.opened"
+                                "action": "c2pa.created",
+                                "digitalSourceType": "http://cv.iptc.org/newscodes/digitalsourcetype/digitalCreation"
                             }
                         ]
                     }
@@ -745,8 +746,8 @@ def setUp(self):
                     "data": {
                         "actions": [
                             {
-                                "action": "c2pa.opened"
-                                # Should have more parameters here, but omitted in tests
+                                "action": "c2pa.created",
+                                "digitalSourceType": "http://cv.iptc.org/newscodes/digitalsourcetype/digitalCreation"
                             }
                         ]
                     }
@@ -2227,8 +2228,9 @@ def test_builder_manifest_with_unicode_characters(self):
                     "data": {
                         "actions": [
                             {
-                                "action": "c2pa.opened",
-                                "description": "Opened with Unicode: test"
+                                "action": "c2pa.created",
+                                "description": "Unicode: test",
+                                "digitalSourceType": "http://cv.iptc.org/newscodes/digitalsourcetype/digitalCreation"
                             }
                         ]
                     }