diff --git a/models/fixtures/access.yml b/models/fixtures/access.yml
index 596046e95022e..c0aa06c86d277 100644
--- a/models/fixtures/access.yml
+++ b/models/fixtures/access.yml
@@ -177,3 +177,5 @@
   user_id: 40
   repo_id: 1
   mode: 2
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/access_token.yml b/models/fixtures/access_token.yml
index 0744255f6645a..d85d785da54a2 100644
--- a/models/fixtures/access_token.yml
+++ b/models/fixtures/access_token.yml
@@ -31,3 +31,5 @@
   created_unix: 946687980
   updated_unix: 946687980
   # commented out tokens so you can see what they are in plaintext
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/action.yml b/models/fixtures/action.yml
index af9ce93ba5c5d..32f2ae8764295 100644
--- a/models/fixtures/action.yml
+++ b/models/fixtures/action.yml
@@ -73,3 +73,5 @@
   is_private: false
   created_unix: 1680454039
   content: '4|' # issueId 5
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/action_artifact.yml b/models/fixtures/action_artifact.yml
index a25dfc205c45a..5fcc70aa536c1 100644
--- a/models/fixtures/action_artifact.yml
+++ b/models/fixtures/action_artifact.yml
@@ -177,3 +177,5 @@
   created_unix: 1730330775
   updated_unix: 1730330775
   expired_unix: 1738106775
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/action_run.yml b/models/fixtures/action_run.yml
index ac5e8303c35ab..63fd011e65f7a 100644
--- a/models/fixtures/action_run.yml
+++ b/models/fixtures/action_run.yml
@@ -160,3 +160,5 @@
   updated: 1683636626
   need_approval: 0
   approved_by: 0
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/action_run_job.yml b/models/fixtures/action_run_job.yml
index 04799b73ca064..82023f122a115 100644
--- a/models/fixtures/action_run_job.yml
+++ b/models/fixtures/action_run_job.yml
@@ -144,3 +144,5 @@
   status: 3
   started: 1683636528
   stopped: 1683636626
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/action_runner.yml b/models/fixtures/action_runner.yml
index ecb7214006574..110ff627a2a11 100644
--- a/models/fixtures/action_runner.yml
+++ b/models/fixtures/action_runner.yml
@@ -49,3 +49,5 @@
   repo_id: 0
   description: "This runner is going to be deleted"
   agent_labels: '["runner_to_be_deleted","linux"]'
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/action_runner_token.yml b/models/fixtures/action_runner_token.yml
index 6520b7f6fbea1..3af8a28c9c135 100644
--- a/models/fixtures/action_runner_token.yml
+++ b/models/fixtures/action_runner_token.yml
@@ -33,3 +33,5 @@
   is_active: 1
   created: 1695617751
   updated: 1695617751
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/action_task.yml b/models/fixtures/action_task.yml
index e1bc588dc59e1..52a37da730531 100644
--- a/models/fixtures/action_task.yml
+++ b/models/fixtures/action_task.yml
@@ -197,3 +197,5 @@
   log_length: 707
   log_size: 90179
   log_expired: 0
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/action_task_output.yml b/models/fixtures/action_task_output.yml
index 314e9f7115b66..741b193b13d7b 100644
--- a/models/fixtures/action_task_output.yml
+++ b/models/fixtures/action_task_output.yml
@@ -18,3 +18,5 @@
   task_id: 50
   output_key: output_b
   output_value: bbb
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/attachment.yml b/models/fixtures/attachment.yml
index 570d4a27dafd3..0870895a715ad 100644
--- a/models/fixtures/attachment.yml
+++ b/models/fixtures/attachment.yml
@@ -166,3 +166,5 @@
   download_count: 0
   size: 0
   created_unix: 946684800
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/badge.yml b/models/fixtures/badge.yml
index 438cd0ca5d4fe..72550be79aaa9 100644
--- a/models/fixtures/badge.yml
+++ b/models/fixtures/badge.yml
@@ -3,3 +3,5 @@
   slug: badge1
   description: just a test badge
   image_url: badge1.png
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/branch.yml b/models/fixtures/branch.yml
index a17999091e032..e09022a6142eb 100644
--- a/models/fixtures/branch.yml
+++ b/models/fixtures/branch.yml
@@ -249,3 +249,5 @@
   is_deleted: false
   deleted_by_id: 0
   deleted_unix: 0
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/collaboration.yml b/models/fixtures/collaboration.yml
index 4c3ac367f6b59..2de3448809060 100644
--- a/models/fixtures/collaboration.yml
+++ b/models/fixtures/collaboration.yml
@@ -63,3 +63,5 @@
   repo_id: 32
   user_id: 10
   mode: 2 # write
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/comment.yml b/models/fixtures/comment.yml
index 8fde386e226d4..6930dbb58e7fb 100644
--- a/models/fixtures/comment.yml
+++ b/models/fixtures/comment.yml
@@ -102,3 +102,5 @@
   review_id: 22
   assignee_id: 5
   created_unix: 946684817
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/commit_status.yml b/models/fixtures/commit_status.yml
index 87c652e53abc8..df3bc42505703 100644
--- a/models/fixtures/commit_status.yml
+++ b/models/fixtures/commit_status.yml
@@ -57,3 +57,5 @@
   context: deploy/awesomeness
   context_hash: ae9547713a6665fc4261d0756904932085a41cf2
   creator_id: 2
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/commit_status_index.yml b/models/fixtures/commit_status_index.yml
index f63343b042a30..9157911bac2b1 100644
--- a/models/fixtures/commit_status_index.yml
+++ b/models/fixtures/commit_status_index.yml
@@ -3,3 +3,5 @@
   repo_id: 1
   sha: "1234123412341234123412341234123412341234"
   max_index: 5
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/deploy_key.yml b/models/fixtures/deploy_key.yml
index ca780a73aa0c1..0d1b2f00980d5 100644
--- a/models/fixtures/deploy_key.yml
+++ b/models/fixtures/deploy_key.yml
@@ -1 +1,3 @@
 [] # empty
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/email_address.yml b/models/fixtures/email_address.yml
index 0f6bd9ee6dfec..b3c78120af1a8 100644
--- a/models/fixtures/email_address.yml
+++ b/models/fixtures/email_address.yml
@@ -317,3 +317,5 @@
   lower_email: user40@example.com
   is_activated: true
   is_primary: true
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/external_login_user.yml b/models/fixtures/external_login_user.yml
index ca780a73aa0c1..0d1b2f00980d5 100644
--- a/models/fixtures/external_login_user.yml
+++ b/models/fixtures/external_login_user.yml
@@ -1 +1,3 @@
 [] # empty
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/follow.yml b/models/fixtures/follow.yml
index b8d35828bf170..f8de0e039dc6f 100644
--- a/models/fixtures/follow.yml
+++ b/models/fixtures/follow.yml
@@ -17,3 +17,5 @@
   id: 4
   user_id: 31
   follow_id: 33
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/gpg_key.yml b/models/fixtures/gpg_key.yml
index 2d54313fdf1c7..3d2895dc1cae4 100644
--- a/models/fixtures/gpg_key.yml
+++ b/models/fixtures/gpg_key.yml
@@ -21,3 +21,5 @@
   can_encrypt_comms: true
   can_encrypt_storage: true
   can_certify: true
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/gpg_key_import.yml b/models/fixtures/gpg_key_import.yml
index ca780a73aa0c1..0d1b2f00980d5 100644
--- a/models/fixtures/gpg_key_import.yml
+++ b/models/fixtures/gpg_key_import.yml
@@ -1 +1,3 @@
 [] # empty
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/hook_task.yml b/models/fixtures/hook_task.yml
index 6023719b1ee95..e19eeb0368743 100644
--- a/models/fixtures/hook_task.yml
+++ b/models/fixtures/hook_task.yml
@@ -35,3 +35,5 @@
         "X-Head": "42"
       }
     }
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/issue.yml b/models/fixtures/issue.yml
index ca5b1c6cd1df5..6da3c9e279a44 100644
--- a/models/fixtures/issue.yml
+++ b/models/fixtures/issue.yml
@@ -372,3 +372,5 @@
   created_unix: 1707270422
   updated_unix: 1707270422
   is_locked: false
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/issue_assignees.yml b/models/fixtures/issue_assignees.yml
index c40ecad6764ce..a0bf422dc9515 100644
--- a/models/fixtures/issue_assignees.yml
+++ b/models/fixtures/issue_assignees.yml
@@ -18,3 +18,5 @@
   id: 5
   assignee_id: 10
   issue_id: 6
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/issue_index.yml b/models/fixtures/issue_index.yml
index 5aabc08e388c5..5110068447124 100644
--- a/models/fixtures/issue_index.yml
+++ b/models/fixtures/issue_index.yml
@@ -33,3 +33,5 @@
 -
   group_id: 51
   max_index: 1
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/issue_label.yml b/models/fixtures/issue_label.yml
index f4ecb1f923232..3754bd782860e 100644
--- a/models/fixtures/issue_label.yml
+++ b/models/fixtures/issue_label.yml
@@ -17,3 +17,5 @@
   id: 4
   issue_id: 2
   label_id: 4
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/issue_pin.yml b/models/fixtures/issue_pin.yml
index 14b7a72d847bd..dc3d1c60d9986 100644
--- a/models/fixtures/issue_pin.yml
+++ b/models/fixtures/issue_pin.yml
@@ -4,3 +4,5 @@
   issue_id: 4
   is_pull: false
   pin_order: 1
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/issue_user.yml b/models/fixtures/issue_user.yml
index 64824316ea275..756cb7be4b43a 100644
--- a/models/fixtures/issue_user.yml
+++ b/models/fixtures/issue_user.yml
@@ -18,3 +18,5 @@
   issue_id: 1
   is_read: false
   is_mentioned: true
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/issue_watch.yml b/models/fixtures/issue_watch.yml
index 4bc3ff1b8b987..edc1041abc38e 100644
--- a/models/fixtures/issue_watch.yml
+++ b/models/fixtures/issue_watch.yml
@@ -29,3 +29,5 @@
   is_watching: false
   created_unix: 946684800
   updated_unix: 946684800
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/label.yml b/models/fixtures/label.yml
index acfac74968631..064f790a7711a 100644
--- a/models/fixtures/label.yml
+++ b/models/fixtures/label.yml
@@ -107,3 +107,5 @@
   num_issues: 0
   num_closed_issues: 0
   archived_unix: 0
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/lfs_meta_object.yml b/models/fixtures/lfs_meta_object.yml
index ae5ae565425fc..0fe430f147baf 100644
--- a/models/fixtures/lfs_meta_object.yml
+++ b/models/fixtures/lfs_meta_object.yml
@@ -30,3 +30,5 @@
   size: 25
   repository_id: 54
   created_unix: 1671607299
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/login_source.yml b/models/fixtures/login_source.yml
index ca780a73aa0c1..0d1b2f00980d5 100644
--- a/models/fixtures/login_source.yml
+++ b/models/fixtures/login_source.yml
@@ -1 +1,3 @@
 [] # empty
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/milestone.yml b/models/fixtures/milestone.yml
index 87c30cc96c4ac..c4ed2aea78073 100644
--- a/models/fixtures/milestone.yml
+++ b/models/fixtures/milestone.yml
@@ -52,3 +52,5 @@
   num_closed_issues: 0
   completeness: 0
   deadline_unix: 253370764800
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/mirror.yml b/models/fixtures/mirror.yml
index 97bc4ae60dda2..1f690654cb38d 100644
--- a/models/fixtures/mirror.yml
+++ b/models/fixtures/mirror.yml
@@ -47,3 +47,5 @@
   next_update_unix: 0
   lfs_enabled: false
   lfs_endpoint: ""
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/notice.yml b/models/fixtures/notice.yml
index af08f07bfa137..17e26d7634f2e 100644
--- a/models/fixtures/notice.yml
+++ b/models/fixtures/notice.yml
@@ -12,3 +12,5 @@
   id: 3
   type: 1 # NoticeRepository
   description: description3
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/notification.yml b/models/fixtures/notification.yml
index bd279d4bb284c..dcfbeada39db6 100644
--- a/models/fixtures/notification.yml
+++ b/models/fixtures/notification.yml
@@ -52,3 +52,5 @@
   issue_id: 4
   created_unix: 946688800
   updated_unix: 946688820
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/oauth2_application.yml b/models/fixtures/oauth2_application.yml
index 2f38cb58b6169..5b3b00b16e887 100644
--- a/models/fixtures/oauth2_application.yml
+++ b/models/fixtures/oauth2_application.yml
@@ -18,3 +18,5 @@
   created_unix: 1546869730
   updated_unix: 1546869730
   confidential_client: false
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/oauth2_authorization_code.yml b/models/fixtures/oauth2_authorization_code.yml
index d29502164e67f..64d8b17507794 100644
--- a/models/fixtures/oauth2_authorization_code.yml
+++ b/models/fixtures/oauth2_authorization_code.yml
@@ -13,3 +13,5 @@
   code_challenge_method: "S256"
   redirect_uri: "http://127.0.0.1/"
   valid_until: 3546869730
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/oauth2_grant.yml b/models/fixtures/oauth2_grant.yml
index e63286878b20f..54f4e45e62ee1 100644
--- a/models/fixtures/oauth2_grant.yml
+++ b/models/fixtures/oauth2_grant.yml
@@ -29,3 +29,5 @@
   scope: "whatever"
   created_unix: 1546869730
   updated_unix: 1546869730
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/org_user.yml b/models/fixtures/org_user.yml
index 73a3e9dba9bd0..dc35701182a27 100644
--- a/models/fixtures/org_user.yml
+++ b/models/fixtures/org_user.yml
@@ -135,3 +135,5 @@
   uid: 20
   org_id: 17
   is_public: false
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/project.yml b/models/fixtures/project.yml
index 44d87bce04674..e61781fd7f1d4 100644
--- a/models/fixtures/project.yml
+++ b/models/fixtures/project.yml
@@ -69,3 +69,5 @@
   type: 2
   created_unix: 1688973000
   updated_unix: 1688973000
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/project_board.yml b/models/fixtures/project_board.yml
index 3293dea6edf4c..91d21981714fa 100644
--- a/models/fixtures/project_board.yml
+++ b/models/fixtures/project_board.yml
@@ -75,3 +75,5 @@
   default: true
   created_unix: 1588117528
   updated_unix: 1588117528
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/project_issue.yml b/models/fixtures/project_issue.yml
index b1af05908aafb..7d9d511882085 100644
--- a/models/fixtures/project_issue.yml
+++ b/models/fixtures/project_issue.yml
@@ -21,3 +21,5 @@
   issue_id: 5
   project_id: 1
   project_board_id: 3
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/protected_branch.yml b/models/fixtures/protected_branch.yml
index ca780a73aa0c1..0d1b2f00980d5 100644
--- a/models/fixtures/protected_branch.yml
+++ b/models/fixtures/protected_branch.yml
@@ -1 +1,3 @@
 [] # empty
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/protected_tag.yml b/models/fixtures/protected_tag.yml
index 1944e7bd84ca4..cb83439645e19 100644
--- a/models/fixtures/protected_tag.yml
+++ b/models/fixtures/protected_tag.yml
@@ -22,3 +22,5 @@
   allowlist_team_i_ds: "[]"
   created_unix: 1715596037
   updated_unix: 1715596037
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/public_key.yml b/models/fixtures/public_key.yml
index 856b0e3fb2976..756bca86b6104 100644
--- a/models/fixtures/public_key.yml
+++ b/models/fixtures/public_key.yml
@@ -10,3 +10,5 @@
   updated_unix: 1565224552
   login_source_id: 0
   verified: false
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/pull_request.yml b/models/fixtures/pull_request.yml
index 9a16316e5a2b4..b8da7fe081205 100644
--- a/models/fixtures/pull_request.yml
+++ b/models/fixtures/pull_request.yml
@@ -117,3 +117,5 @@
   index: 1
   head_repo_id: 61
   base_repo_id: 61
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/reaction.yml b/models/fixtures/reaction.yml
index ee571a73a485e..9effcc98f7c95 100644
--- a/models/fixtures/reaction.yml
+++ b/models/fixtures/reaction.yml
@@ -37,3 +37,5 @@
   comment_id: 2
   user_id: 1
   created_unix: 1573248005
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/release.yml b/models/fixtures/release.yml
index 372a79509f0a8..be44e331ec077 100644
--- a/models/fixtures/release.yml
+++ b/models/fixtures/release.yml
@@ -150,3 +150,5 @@
   is_prerelease: false
   is_tag: false
   created_unix: 946684803
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/renamed_branch.yml b/models/fixtures/renamed_branch.yml
index efa5130a2b9e9..9055080ff8520 100644
--- a/models/fixtures/renamed_branch.yml
+++ b/models/fixtures/renamed_branch.yml
@@ -3,3 +3,5 @@
   repo_id: 1
   from: dev
   to: master
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/repo_archiver.yml b/models/fixtures/repo_archiver.yml
index ca780a73aa0c1..0d1b2f00980d5 100644
--- a/models/fixtures/repo_archiver.yml
+++ b/models/fixtures/repo_archiver.yml
@@ -1 +1,3 @@
 [] # empty
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/repo_indexer_status.yml b/models/fixtures/repo_indexer_status.yml
index ca780a73aa0c1..0d1b2f00980d5 100644
--- a/models/fixtures/repo_indexer_status.yml
+++ b/models/fixtures/repo_indexer_status.yml
@@ -1 +1,3 @@
 [] # empty
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/repo_license.yml b/models/fixtures/repo_license.yml
index ca780a73aa0c1..0d1b2f00980d5 100644
--- a/models/fixtures/repo_license.yml
+++ b/models/fixtures/repo_license.yml
@@ -1 +1,3 @@
 [] # empty
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/repo_redirect.yml b/models/fixtures/repo_redirect.yml
index 8850c8d780b70..60459d638d6db 100644
--- a/models/fixtures/repo_redirect.yml
+++ b/models/fixtures/repo_redirect.yml
@@ -3,3 +3,5 @@
   owner_id: 2
   lower_name: oldrepo1
   redirect_repo_id: 1
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/repo_topic.yml b/models/fixtures/repo_topic.yml
index f166faccc1d8f..3a4e7edaa96ab 100644
--- a/models/fixtures/repo_topic.yml
+++ b/models/fixtures/repo_topic.yml
@@ -25,3 +25,5 @@
 -
   repo_id: 2
   topic_id: 6
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/repo_transfer.yml b/models/fixtures/repo_transfer.yml
index b12e6b207f4c5..0a26eaec8ee39 100644
--- a/models/fixtures/repo_transfer.yml
+++ b/models/fixtures/repo_transfer.yml
@@ -29,3 +29,5 @@
   repo_id: 5
   created_unix: 1553610671
   updated_unix: 1553610671
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/repo_unit.yml b/models/fixtures/repo_unit.yml
index 4c3e37500f094..69f083ccd75af 100644
--- a/models/fixtures/repo_unit.yml
+++ b/models/fixtures/repo_unit.yml
@@ -747,3 +747,5 @@
   type: 10
   config: "{}"
   created_unix: 946684810
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/repository.yml b/models/fixtures/repository.yml
index dfa514db37f21..d8eb796207285 100644
--- a/models/fixtures/repository.yml
+++ b/models/fixtures/repository.yml
@@ -1788,3 +1788,5 @@
   size: 0
   is_fsck_enabled: true
   close_issues_via_commit_in_any_branch: false
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/review.yml b/models/fixtures/review.yml
index 5b8bbceca9edf..abcc9d3bb274c 100644
--- a/models/fixtures/review.yml
+++ b/models/fixtures/review.yml
@@ -214,3 +214,5 @@
   original_author_id: 0
   updated_unix: 946684817
   created_unix: 946684817
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/star.yml b/models/fixtures/star.yml
index 39b51b3736f2f..96db493448bb5 100644
--- a/models/fixtures/star.yml
+++ b/models/fixtures/star.yml
@@ -17,3 +17,5 @@
   id: 4
   uid: 10
   repo_id: 32
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/stopwatch.yml b/models/fixtures/stopwatch.yml
index b7919d6fbbd6e..bbb3852069c47 100644
--- a/models/fixtures/stopwatch.yml
+++ b/models/fixtures/stopwatch.yml
@@ -9,3 +9,5 @@
   user_id: 2
   issue_id: 2
   created_unix: 1500988002
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/system_setting.yml b/models/fixtures/system_setting.yml
index dcad176c899e7..ae612fa9f935a 100644
--- a/models/fixtures/system_setting.yml
+++ b/models/fixtures/system_setting.yml
@@ -13,3 +13,5 @@
   version: 1
   created: 1653533198
   updated: 1653533198
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/team.yml b/models/fixtures/team.yml
index b549d0589bc9e..3c2cb7802a377 100644
--- a/models/fixtures/team.yml
+++ b/models/fixtures/team.yml
@@ -261,3 +261,5 @@
   num_members: 1
   includes_all_repositories: true
   can_create_org_repo: false
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/team_repo.yml b/models/fixtures/team_repo.yml
index a29078107eeb4..c91f74467a891 100644
--- a/models/fixtures/team_repo.yml
+++ b/models/fixtures/team_repo.yml
@@ -75,3 +75,5 @@
   org_id: 41
   team_id: 22
   repo_id: 61
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/team_unit.yml b/models/fixtures/team_unit.yml
index 110019eee30cf..bb950870094f0 100644
--- a/models/fixtures/team_unit.yml
+++ b/models/fixtures/team_unit.yml
@@ -340,3 +340,5 @@
   team_id: 24
   type: 1 # code
   access_mode: 2
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/team_user.yml b/models/fixtures/team_user.yml
index 6b2d153278ac5..4cceffee6a90f 100644
--- a/models/fixtures/team_user.yml
+++ b/models/fixtures/team_user.yml
@@ -159,3 +159,5 @@
   org_id: 35
   team_id: 24
   uid: 2
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/topic.yml b/models/fixtures/topic.yml
index 055addf510e20..97ac821fc1125 100644
--- a/models/fixtures/topic.yml
+++ b/models/fixtures/topic.yml
@@ -27,3 +27,5 @@
   id: 6
   name: topicname2
   repo_count: 2
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/tracked_time.yml b/models/fixtures/tracked_time.yml
index 768af38d9e20f..7c2145a6d86fb 100644
--- a/models/fixtures/tracked_time.yml
+++ b/models/fixtures/tracked_time.yml
@@ -69,3 +69,5 @@
   time: 100000
   created_unix: 947688815
   deleted: true
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/two_factor.yml b/models/fixtures/two_factor.yml
index d8cb85274b687..13b421b7b4990 100644
--- a/models/fixtures/two_factor.yml
+++ b/models/fixtures/two_factor.yml
@@ -7,3 +7,5 @@
   last_used_passcode:
   created_unix: 1564253724
   updated_unix: 1564253724
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/user.yml b/models/fixtures/user.yml
index 976a236011cc9..1a33947e047a4 100644
--- a/models/fixtures/user.yml
+++ b/models/fixtures/user.yml
@@ -1556,3 +1556,5 @@
   repo_admin_change_team_access: false
   theme: ""
   keep_activity_private: false
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/user_blocking.yml b/models/fixtures/user_blocking.yml
index 2ec9d99df5214..c1714e40c826e 100644
--- a/models/fixtures/user_blocking.yml
+++ b/models/fixtures/user_blocking.yml
@@ -17,3 +17,5 @@
   id: 4
   blocker_id: 50
   blockee_id: 34
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/user_open_id.yml b/models/fixtures/user_open_id.yml
index d3a367b99dfa3..72fe7e34b8cc8 100644
--- a/models/fixtures/user_open_id.yml
+++ b/models/fixtures/user_open_id.yml
@@ -15,3 +15,5 @@
   uid: 2
   uri: https://domain1.tld/user2/
   show: true
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/user_redirect.yml b/models/fixtures/user_redirect.yml
index c668cb6c3b7b0..1b0f7a9494253 100644
--- a/models/fixtures/user_redirect.yml
+++ b/models/fixtures/user_redirect.yml
@@ -6,3 +6,5 @@
   id: 2
   lower_name: olduser2
   redirect_user_id: 2
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/watch.yml b/models/fixtures/watch.yml
index 18bcd2ed2b478..b7ee121f24d16 100644
--- a/models/fixtures/watch.yml
+++ b/models/fixtures/watch.yml
@@ -39,3 +39,5 @@
   user_id: 10
   repo_id: 32
   mode: 1 # normal
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/webauthn_credential.yml b/models/fixtures/webauthn_credential.yml
index bc43127fcd46d..d188a4d76a814 100644
--- a/models/fixtures/webauthn_credential.yml
+++ b/models/fixtures/webauthn_credential.yml
@@ -7,3 +7,5 @@
   clone_warning: false
   created_unix: 946684800
   updated_unix: 946684800
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly
diff --git a/models/fixtures/webhook.yml b/models/fixtures/webhook.yml
index ec282914b81e7..f372aaaecb41d 100644
--- a/models/fixtures/webhook.yml
+++ b/models/fixtures/webhook.yml
@@ -50,3 +50,5 @@
   events: '{"push_only":true,"branch_filter":"{master,feature*}"}'
   is_active: true
   is_system_webhook: false
+
+# DO NOT add more test data in the fixtures, test case should prepare their own test data separately and clearly