diff --git a/erpnext/projects/report/project_summary/test_project_summary.py b/erpnext/projects/report/project_summary/test_project_summary.py
new file mode 100644
index 00000000000..66dff87e1e6
--- /dev/null
+++ b/erpnext/projects/report/project_summary/test_project_summary.py
@@ -0,0 +1,65 @@
+# Copyright (c) 2026, Frappe Technologies Pvt. Ltd. and Contributors
+# See license.txt
+
+import frappe
+from frappe import _
+
+from erpnext.projects.report.project_summary.project_summary import execute
+from erpnext.tests.utils import ERPNextTestSuite
+
+
+class TestProjectSummary(ERPNextTestSuite):
+	"""Lists projects with their total / completed / overdue task counts."""
+
+	def make_project(self):
+		return frappe.get_doc(
+			{
+				"doctype": "Project",
+				"project_name": f"_Test PS {frappe.generate_hash(length=6)}",
+				"company": "_Test Company",
+			}
+		).insert()
+
+	def make_task(self, project, status="Open"):
+		task = frappe.get_doc(
+			{
+				"doctype": "Task",
+				"subject": f"Task {frappe.generate_hash(length=6)}",
+				"project": project.name,
+			}
+		).insert()
+		if status != "Open":
+			# set the status directly; the report counts tasks by their stored status
+			frappe.db.set_value("Task", task.name, "status", status)
+		return task
+
+	def run_report(self, project):
+		return execute(frappe._dict({"name": project.name}))
+
+	def project_row(self, project):
+		_columns, data, *_rest = self.run_report(project)
+		return next((r for r in data if r["name"] == project.name), None)
+
+	def test_task_counts(self):
+		project = self.make_project()
+		self.make_task(project, "Completed")
+		self.make_task(project, "Completed")
+		self.make_task(project, "Open")
+		self.make_task(project, "Overdue")
+
+		row = self.project_row(project)
+		self.assertIsNotNone(row, "Project missing from report")
+		self.assertEqual(row["total_tasks"], 4)
+		self.assertEqual(row["completed_tasks"], 2)
+		self.assertEqual(row["overdue_tasks"], 1)
+
+	def test_report_summary_totals(self):
+		project = self.make_project()
+		self.make_task(project, "Completed")
+		self.make_task(project, "Open")
+
+		_columns, _data, _message, _chart, report_summary = self.run_report(project)
+		summary = {s["label"]: s["value"] for s in report_summary}
+		self.assertEqual(summary[_("Total Tasks")], 2)
+		self.assertEqual(summary[_("Completed Tasks")], 1)
+		self.assertEqual(summary[_("Overdue Tasks")], 0)