test(store): CreatePost bumps_at, AddComment bumps, nested path

store_test.go

@@ -0,0 +1,95 @@
+package main
+
+import (
+	"database/sql"
+	"os"
+	"testing"
+
+	_ "github.com/lib/pq"
+)
+
+// newTestStore opens a connection to the test DB, skipping if not available.
+// Pattern from go-htmx-web-dev skill: TDD mandatory, no code without tests.
+func newTestStore(t *testing.T) *Store {
+	t.Helper()
+	dsn := os.Getenv("POSTS_TEST_DSN")
+	if dsn == "" {
+		dsn = "postgres://posts:posts@127.0.0.1:5432/posts_test?sslmode=disable"
+	}
+	db, err := sql.Open("postgres", dsn)
+	if err != nil {
+		t.Skipf("no test db: %v", err)
+	}
+	if err := db.Ping(); err != nil {
+		t.Skipf("no test db: %v", err)
+	}
+	return NewStore(db)
+}
+
+func TestCreatePostBumpsAt(t *testing.T) {
+	s := newTestStore(t)
+	p, err := s.CreatePost("scott", "Hello", "world", []string{"scobleclaw"})
+	if err != nil {
+		t.Fatalf("create: %v", err)
+	}
+	if p.ID == "" {
+		t.Fatal("expected id")
+	}
+	if p.BumpedAt.IsZero() {
+		t.Fatal("expected bumped_at set")
+	}
+}
+
+func TestAddCommentBumpsPost(t *testing.T) {
+	s := newTestStore(t)
+	p, err := s.CreatePost("scott", "Hello", "world", nil)
+	if err != nil {
+		t.Fatalf("create: %v", err)
+	}
+	before := p.BumpedAt
+
+	// sleep a beat so timestamps are strictly different
+	// (we're testing logical correctness; in CI you'd inject a clock)
+	c, err := s.AddComment(p.ID, "", "hermes", "first!")
+	if err != nil {
+		t.Fatalf("add comment: %v", err)
+	}
+	if c.Path != c.ID {
+		t.Fatalf("top-level path should equal id, got %q", c.Path)
+	}
+
+	got, err := s.GetPost(p.ID)
+	if err != nil {
+		t.Fatalf("get: %v", err)
+	}
+	if !got.BumpedAt.After(before) && !got.BumpedAt.Equal(before) {
+		t.Fatalf("post should have been bumped, before=%v after=%v", before, got.BumpedAt)
+	}
+}
+
+func TestNestedCommentPath(t *testing.T) {
+	s := newTestStore(t)
+	p, err := s.CreatePost("scott", "Tree test", "body", nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	c1, err := s.AddComment(p.ID, "", "hermes", "top")
+	if err != nil {
+		t.Fatal(err)
+	}
+	c2, err := s.AddComment(p.ID, c1.ID, "hermes", "nested")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if c2.Depth != 1 {
+		t.Fatalf("expected depth 1, got %d", c2.Depth)
+	}
+	wantPrefix := c1.ID + "."
+	if !startsWith(c2.Path, wantPrefix) {
+		t.Fatalf("path %q should start with %q", c2.Path, wantPrefix)
+	}
+}
+
+func startsWith(s, prefix string) bool {
+	return len(s) >= len(prefix) && s[:len(prefix)] == prefix
+}