Source GitHub: add unit tests (#31285)

Co-authored-by: artem1205 <[email protected]>

airbyte-integrations/connectors/source-github/unit_tests/pull_request_stats_query.json

@@ -0,0 +1,3 @@
+{
+  "query": "query {\n  repository(owner: \"airbytehq\", name: \"airbyte\") {\n    name\n    owner {\n      login\n    }\n    pullRequests(first: 10, orderBy: {field: UPDATED_AT, direction: ASC}) {\n      nodes {\n        node_id: id\n        id: databaseId\n        number\n        updated_at: updatedAt\n        changed_files: changedFiles\n        deletions\n        additions\n        merged\n        mergeable\n        can_be_rebased: canBeRebased\n        maintainer_can_modify: maintainerCanModify\n        merge_state_status: mergeStateStatus\n        comments {\n          totalCount\n        }\n        commits {\n          totalCount\n        }\n        review_comments: reviews(first: 100) {\n          totalCount\n          nodes {\n            comments {\n              totalCount\n            }\n          }\n        }\n        merged_by: mergedBy {\n          __typename\n          ... on User {\n            node_id: id\n            id: databaseId\n            login\n            avatar_url: avatarUrl\n            html_url: url\n            site_admin: isSiteAdmin\n          }\n        }\n      }\n      pageInfo {\n        hasNextPage\n        endCursor\n      }\n    }\n  }\n}"
+}

airbyte-integrations/connectors/source-github/unit_tests/responses/contributor_activity_response.json

@@ -0,0 +1,33 @@
+[
+  {
+    "author": {
+      "login": "octocat",
+      "id": 1,
+      "node_id": "MDQ6VXNlcjE=",
+      "avatar_url": "https://github.com/images/error/octocat_happy.gif",
+      "gravatar_id": "",
+      "url": "https://api.github.com/users/octocat",
+      "html_url": "https://github.com/octocat",
+      "followers_url": "https://api.github.com/users/octocat/followers",
+      "following_url": "https://api.github.com/users/octocat/following{/other_user}",
+      "gists_url": "https://api.github.com/users/octocat/gists{/gist_id}",
+      "starred_url": "https://api.github.com/users/octocat/starred{/owner}{/repo}",
+      "subscriptions_url": "https://api.github.com/users/octocat/subscriptions",
+      "organizations_url": "https://api.github.com/users/octocat/orgs",
+      "repos_url": "https://api.github.com/users/octocat/repos",
+      "events_url": "https://api.github.com/users/octocat/events{/privacy}",
+      "received_events_url": "https://api.github.com/users/octocat/received_events",
+      "type": "User",
+      "site_admin": false
+    },
+    "total": 135,
+    "weeks": [
+      {
+        "w": 1367712000,
+        "a": 6898,
+        "d": 77,
+        "c": 10
+      }
+    ]
+  }
+]

airbyte-integrations/connectors/source-github/unit_tests/responses/projects_v2_response.json

@@ -0,0 +1,45 @@
+{
+  "data": {
+    "repository": {
+      "name": "integration-test",
+      "owner": {
+        "login": "airbytehq"
+      },
+      "projectsV2": {
+        "nodes": [
+          {
+            "closed": false,
+            "created_at": "2023-09-25T18:34:52Z",
+            "closed_at": null,
+            "updated_at": "2023-09-25T18:35:45Z",
+            "creator": {
+              "avatarUrl": "https://avatars.githubusercontent.com/u/92915184?u=e53c87d81ec6fb0596bc0f75e12e84e8f0df8d83&v=4",
+              "login": "airbyteio",
+              "resourcePath": "/airbyteio",
+              "url": "https://github.com/airbyteio"
+            },
+            "node_id": "PVT_kwDOA4_XW84AV7NS",
+            "id": 5747538,
+            "number": 58,
+            "public": false,
+            "readme": "# Title\nintegration test project",
+            "short_description": "integration test project description",
+            "template": false,
+            "title": "integration test project",
+            "url": "https://github.com/orgs/airbytehq/projects/58",
+            "viewerCanClose": true,
+            "viewerCanReopen": true,
+            "viewerCanUpdate": true,
+            "owner": {
+              "id": "MDEyOk9yZ2FuaXphdGlvbjU5NzU4NDI3"
+            }
+          }
+        ],
+        "pageInfo": {
+          "hasNextPage": false,
+          "endCursor": "MQ"
+        }
+      }
+    }
+  }
+}