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// +build go1.13
/*
*
* Copyright 2020 gRPC authors.
*
* Licensed 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 certprovider
import (
"context"
"errors"
"testing"
"time"
)
var errProviderTestInternal = errors.New("provider internal error")
// TestDistributorEmpty tries to read key material from an empty distributor and
// expects the call to timeout.
func (s) TestDistributorEmpty(t *testing.T) {
dist := NewDistributor()
// This call to KeyMaterial() should timeout because no key material has
// been set on the distributor as yet.
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
if err := readAndVerifyKeyMaterial(ctx, dist, nil); !errors.Is(err, context.DeadlineExceeded) {
t.Fatal(err)
}
}
// TestDistributor invokes the different methods on the Distributor type and
// verifies the results.
func (s) TestDistributor(t *testing.T) {
dist := NewDistributor()
// Read cert/key files from testdata.
km1 := loadKeyMaterials(t, "x509/server1_cert.pem", "x509/server1_key.pem", "x509/client_ca_cert.pem")
km2 := loadKeyMaterials(t, "x509/server2_cert.pem", "x509/server2_key.pem", "x509/client_ca_cert.pem")
// Push key material into the distributor and make sure that a call to
// KeyMaterial() returns the expected key material, with both the local
// certs and root certs.
dist.Set(km1, nil)
ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
defer cancel()
if err := readAndVerifyKeyMaterial(ctx, dist, km1); err != nil {
t.Fatal(err)
}
// Push new key material into the distributor and make sure that a call to
// KeyMaterial() returns the expected key material, with only root certs.
dist.Set(km2, nil)
if err := readAndVerifyKeyMaterial(ctx, dist, km2); err != nil {
t.Fatal(err)
}
// Push an error into the distributor and make sure that a call to
// KeyMaterial() returns that error and nil keyMaterial.
dist.Set(km2, errProviderTestInternal)
if gotKM, err := dist.KeyMaterial(ctx); gotKM != nil || !errors.Is(err, errProviderTestInternal) {
t.Fatalf("KeyMaterial() = {%v, %v}, want {nil, %v}", gotKM, err, errProviderTestInternal)
}
// Stop the distributor and KeyMaterial() should return errProviderClosed.
dist.Stop()
if km, err := dist.KeyMaterial(ctx); !errors.Is(err, errProviderClosed) {
t.Fatalf("KeyMaterial() = {%v, %v}, want {nil, %v}", km, err, errProviderClosed)
}
}
// TestDistributorConcurrency invokes methods on the distributor in parallel. It
// exercises that the scenario where a distributor's KeyMaterial() method is
// blocked waiting for keyMaterial, while the Set() method is called from
// another goroutine. It verifies that the KeyMaterial() method eventually
// returns with expected keyMaterial.
func (s) TestDistributorConcurrency(t *testing.T) {
dist := NewDistributor()
// Read cert/key files from testdata.
km := loadKeyMaterials(t, "x509/server1_cert.pem", "x509/server1_key.pem", "x509/client_ca_cert.pem")
ctx, cancel := context.WithTimeout(context.Background(), defaultTestTimeout)
defer cancel()
// Push key material into the distributor from a goroutine and read from
// here to verify that the distributor returns the expected keyMaterial.
go func() {
// Add a small sleep here to make sure that the call to KeyMaterial()
// happens before the call to Set(), thereby the former is blocked till
// the latter happens.
time.Sleep(100 * time.Microsecond)
dist.Set(km, nil)
}()
if err := readAndVerifyKeyMaterial(ctx, dist, km); err != nil {
t.Fatal(err)
}
}
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