snapshot of https://github.com/casbin/casbin.git (master, 2026-09-15; blobs > 131072B omitted)

blp_test.go

@@ -0,0 +1,53 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+package casbin
+
+import (
+	"testing"
+)
+
+func testEnforceBLP(t *testing.T, e *Enforcer, sub string, subLevel float64, obj string, objLevel float64, act string, res bool) {
+	t.Helper()
+	if myRes, err := e.Enforce(sub, subLevel, obj, objLevel, act); err != nil {
+		t.Errorf("Enforce Error: %s", err)
+	} else if myRes != res {
+		t.Errorf("%s, %v, %s, %v, %s: %t, supposed to be %t", sub, subLevel, obj, objLevel, act, myRes, res)
+	}
+}
+
+func TestBLPModel(t *testing.T) {
+	e, _ := NewEnforcer("examples/blp_model.conf")
+
+	// Read operations: subject level >= object level
+	testEnforceBLP(t, e, "alice", 3, "data1", 1, "read", true)
+	testEnforceBLP(t, e, "bob", 2, "data2", 2, "read", true)
+	testEnforceBLP(t, e, "charlie", 1, "data1", 1, "read", true)
+
+	// Read violations: subject level < object level
+	testEnforceBLP(t, e, "bob", 2, "data3", 3, "read", false)
+	testEnforceBLP(t, e, "charlie", 1, "data2", 2, "read", false)
+
+	// Write operations: subject level <= object level
+	testEnforceBLP(t, e, "alice", 3, "data3", 3, "write", true)
+	testEnforceBLP(t, e, "bob", 2, "data3", 3, "write", true)
+	testEnforceBLP(t, e, "charlie", 1, "data2", 2, "write", true)
+
+	// Write violations: subject level > object level
+	testEnforceBLP(t, e, "alice", 3, "data1", 1, "write", false)
+	testEnforceBLP(t, e, "bob", 2, "data1", 1, "write", false)
+}