initial

2026-05-28 19:49:29 +00:00
commit 0bfe0c314d
7 changed files with 766 additions and 0 deletions
@@ -0,0 +1,153 @@
+package main
+
+import "testing"
+
+func TestDecideTrigger_MentionInIssueComment(t *testing.T) {
+	body := []byte(`{
+		"action": "created",
+		"sender": {"login": "lars"},
+		"repository": {"full_name": "lars/demo", "ssh_url": "git@host:lars/demo.git", "default_branch": "main"},
+		"issue": {"number": 7, "user": {"login": "lars"}, "html_url": "http://h/lars/demo/issues/7"},
+		"comment": {"id": 1, "body": "@klaus please look at this", "user": {"login": "lars"}}
+	}`)
+	_, tr, err := DecideTrigger("issue_comment", body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if tr == nil {
+		t.Fatal("expected trigger, got nil")
+	}
+	if tr.Reason != "mention" || tr.Number != 7 || tr.IsPR {
+		t.Fatalf("unexpected trigger: %+v", tr)
+	}
+}
+
+func TestDecideTrigger_AssignedPR(t *testing.T) {
+	body := []byte(`{
+		"action": "assigned",
+		"sender": {"login": "lars"},
+		"assignee": {"login": "Klaus"},
+		"repository": {"full_name": "lars/demo", "ssh_url": "git@host:lars/demo.git", "default_branch": "main"},
+		"pull_request": {"number": 12, "head": {"ref": "feat-x"}, "user": {"login": "lars"}}
+	}`)
+	_, tr, err := DecideTrigger("pull_request", body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if tr == nil || tr.Reason != "assigned" || !tr.IsPR || tr.Number != 12 || tr.BranchHint != "feat-x" {
+		t.Fatalf("unexpected trigger: %+v", tr)
+	}
+}
+
+func TestDecideTrigger_ReplyOnKlausPR(t *testing.T) {
+	body := []byte(`{
+		"action": "created",
+		"sender": {"login": "lars"},
+		"repository": {"full_name": "lars/demo", "ssh_url": "git@host:lars/demo.git", "default_branch": "main"},
+		"issue": {"number": 5, "user": {"login": "klaus"}, "pull_request": {"html_url": "x"}},
+		"comment": {"id": 9, "body": "looks good", "user": {"login": "lars"}}
+	}`)
+	_, tr, err := DecideTrigger("issue_comment", body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if tr == nil || tr.Reason != "reply_on_klaus_pr" || !tr.IsPR {
+		t.Fatalf("unexpected trigger: %+v", tr)
+	}
+}
+
+func TestDecideTrigger_IgnoresOwnEvents(t *testing.T) {
+	body := []byte(`{
+		"action": "created",
+		"sender": {"login": "klaus"},
+		"repository": {"full_name": "lars/demo"},
+		"issue": {"number": 1, "user": {"login": "lars"}},
+		"comment": {"body": "@klaus hi", "user": {"login": "klaus"}}
+	}`)
+	_, tr, err := DecideTrigger("issue_comment", body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if tr != nil {
+		t.Fatalf("expected nil trigger for self-event, got %+v", tr)
+	}
+}
+
+func TestDecideTrigger_NoMentionNoTrigger(t *testing.T) {
+	body := []byte(`{
+		"action": "created",
+		"sender": {"login": "lars"},
+		"repository": {"full_name": "lars/demo"},
+		"issue": {"number": 2, "user": {"login": "lars"}},
+		"comment": {"body": "thanks everyone", "user": {"login": "lars"}}
+	}`)
+	_, tr, _ := DecideTrigger("issue_comment", body)
+	if tr != nil {
+		t.Fatalf("expected nil trigger, got %+v", tr)
+	}
+}
+
+func TestDecideTrigger_EditedCommentAddsMention(t *testing.T) {
+	body := []byte(`{
+		"action": "edited",
+		"sender": {"login": "lars"},
+		"repository": {"full_name": "lars/demo"},
+		"issue": {"number": 21, "user": {"login": "Klaus"}},
+		"comment": {"id": 31, "body": "@Klaus Please respond", "user": {"login": "lars"}},
+		"changes": {"body": {"from": "Hello? Can you hear me?"}}
+	}`)
+	_, tr, err := DecideTrigger("issue_comment", body)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if tr == nil || tr.Reason != "mention" || tr.Number != 21 {
+		t.Fatalf("expected mention trigger, got %+v", tr)
+	}
+}
+
+func TestDecideTrigger_EditedCommentAlreadyMentioned(t *testing.T) {
+	// Mention was in the original body too — do not re-trigger.
+	body := []byte(`{
+		"action": "edited",
+		"sender": {"login": "lars"},
+		"repository": {"full_name": "lars/demo"},
+		"issue": {"number": 21, "user": {"login": "lars"}},
+		"comment": {"id": 31, "body": "@Klaus please look (typo fixed)", "user": {"login": "lars"}},
+		"changes": {"body": {"from": "@Klaus please look (typo)"}}
+	}`)
+	_, tr, _ := DecideTrigger("issue_comment", body)
+	if tr != nil {
+		t.Fatalf("expected nil trigger (mention pre-existed), got %+v", tr)
+	}
+}
+
+func TestDecideTrigger_EditedNonBodyChange(t *testing.T) {
+	// changes present but no body field — e.g. labels changed. Should not trigger.
+	body := []byte(`{
+		"action": "edited",
+		"sender": {"login": "lars"},
+		"repository": {"full_name": "lars/demo"},
+		"issue": {"number": 1, "body": "@Klaus help", "user": {"login": "lars"}},
+		"changes": {"added_labels": null}
+	}`)
+	_, tr, _ := DecideTrigger("issues", body)
+	if tr != nil {
+		t.Fatalf("expected nil trigger when body wasn't part of edit, got %+v", tr)
+	}
+}
+
+func TestMentionRegex_NotPartOfWord(t *testing.T) {
+	cases := map[string]bool{
+		"hello @klaus please":         true,
+		"@klaus do x":                 true,
+		"thanks @KLAUS":               true,
+		"email me at not@klausmail":   false,
+		"see klausbot":                false,
+		"@klausen is someone else":    false,
+	}
+	for in, want := range cases {
+		if got := mentionsKlaus(in); got != want {
+			t.Errorf("mentionsKlaus(%q) = %v, want %v", in, got, want)
+		}
+	}
+}