Turn off Log.Print

[hengpor]

I noticed there are couple log.Print in loading model and policy config. There should environmental variable to control this log so it will can give developer to switch it on/off between dev and prod version.

[hsluoyz]

Hi @hengpor ,

I have added the switch to log. Please refer to TestEnableLog in: https://github.com/casbin/casbin/blob/master/enforcer_test.go

func TestEnableLog(t *testing.T) {
	e := NewEnforcer("examples/basic_model.conf", "examples/basic_policy.csv", true)
	// The log is enabled by default, so the above is the same with:
	// e := NewEnforcer("examples/basic_model.conf", "examples/basic_policy.csv")

	testEnforce(t, e, "alice", "data1", "read", true)
	testEnforce(t, e, "alice", "data1", "write", false)
	testEnforce(t, e, "alice", "data2", "read", false)
	testEnforce(t, e, "alice", "data2", "write", false)
	testEnforce(t, e, "bob", "data1", "read", false)
	testEnforce(t, e, "bob", "data1", "write", false)
	testEnforce(t, e, "bob", "data2", "read", false)
	testEnforce(t, e, "bob", "data2", "write", true)

	// The log can also be enabled or disabled at run-time.
	e.EnableLog(false)
	testEnforce(t, e, "alice", "data1", "read", true)
	testEnforce(t, e, "alice", "data1", "write", false)
	testEnforce(t, e, "alice", "data2", "read", false)
	testEnforce(t, e, "alice", "data2", "write", false)
	testEnforce(t, e, "bob", "data1", "read", false)
	testEnforce(t, e, "bob", "data1", "write", false)
	testEnforce(t, e, "bob", "data2", "read", false)
	testEnforce(t, e, "bob", "data2", "write", true)
}

[hsluoyz]

This issue is supposed to be fixed.