blp_test.go

// Licensed to the Apache Software Foundation (ASF) under one
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// 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
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// 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)
}