389 lines
13 KiB
Go
389 lines
13 KiB
Go
// Copyright 2021-2022 the Pinniped contributors. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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package execcredcache
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import (
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"fmt"
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"os"
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"path/filepath"
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"strings"
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"testing"
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"time"
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"github.com/stretchr/testify/require"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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clientauthenticationv1beta1 "k8s.io/client-go/pkg/apis/clientauthentication/v1beta1"
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"go.pinniped.dev/internal/testutil"
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)
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func TestNew(t *testing.T) {
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t.Parallel()
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tmp := testutil.TempDir(t) + "/credentials.yaml"
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c := New(tmp)
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require.NotNil(t, c)
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require.Equal(t, tmp, c.path)
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require.NotNil(t, c.errReporter)
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c.errReporter(fmt.Errorf("some error"))
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}
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func TestGet(t *testing.T) {
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t.Parallel()
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now := time.Now().Round(1 * time.Second)
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oneHourFromNow := metav1.NewTime(now.Add(1 * time.Hour))
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type testKey struct{ K1, K2 string }
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tests := []struct {
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name string
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makeTestFile func(t *testing.T, tmp string)
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trylockFunc func(*testing.T) error
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unlockFunc func(*testing.T) error
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key testKey
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want *clientauthenticationv1beta1.ExecCredential
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wantErrors []string
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wantTestFile func(t *testing.T, tmp string)
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}{
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{
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name: "not found",
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key: testKey{},
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},
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{
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name: "file lock error",
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makeTestFile: func(t *testing.T, tmp string) { require.NoError(t, os.WriteFile(tmp, []byte(""), 0600)) },
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trylockFunc: func(t *testing.T) error { return fmt.Errorf("some lock error") },
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unlockFunc: func(t *testing.T) error { require.Fail(t, "should not be called"); return nil },
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key: testKey{},
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wantErrors: []string{"could not lock cache file: some lock error"},
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},
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{
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name: "invalid file",
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makeTestFile: func(t *testing.T, tmp string) {
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require.NoError(t, os.WriteFile(tmp, []byte("invalid yaml"), 0600))
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},
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key: testKey{},
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wantErrors: []string{
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"failed to read cache, resetting: invalid cache file: error unmarshaling JSON: while decoding JSON: json: cannot unmarshal string into Go value of type execcredcache.credCache",
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},
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},
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{
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name: "invalid file, fail to unlock",
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makeTestFile: func(t *testing.T, tmp string) { require.NoError(t, os.WriteFile(tmp, []byte("invalid"), 0600)) },
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trylockFunc: func(t *testing.T) error { return nil },
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unlockFunc: func(t *testing.T) error { return fmt.Errorf("some unlock error") },
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key: testKey{},
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wantErrors: []string{
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"failed to read cache, resetting: invalid cache file: error unmarshaling JSON: while decoding JSON: json: cannot unmarshal string into Go value of type execcredcache.credCache",
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"could not unlock cache file: some unlock error",
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},
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},
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{
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name: "unreadable file",
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makeTestFile: func(t *testing.T, tmp string) {
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require.NoError(t, os.Mkdir(tmp, 0700))
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},
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key: testKey{},
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wantErrors: []string{
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"failed to read cache, resetting: could not read cache file: read TEMPFILE: is a directory",
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"could not write cache: open TEMPFILE: is a directory",
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},
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},
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{
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name: "valid file but cache miss",
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makeTestFile: func(t *testing.T, tmp string) {
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validCache := emptyCache()
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validCache.Entries = []entry{{
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Key: jsonSHA256Hex(testKey{K1: "v3", K2: "v4"}),
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CreationTimestamp: metav1.NewTime(now.Add(-2 * time.Minute)),
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LastUsedTimestamp: metav1.NewTime(now.Add(-1 * time.Minute)),
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Credential: &clientauthenticationv1beta1.ExecCredentialStatus{
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Token: "test-token",
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ExpirationTimestamp: &oneHourFromNow,
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},
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}}
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require.NoError(t, validCache.writeTo(tmp))
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},
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key: testKey{K1: "v1", K2: "v2"},
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wantErrors: []string{},
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},
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{
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name: "valid file but expired cache hit",
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makeTestFile: func(t *testing.T, tmp string) {
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validCache := emptyCache()
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oneMinuteAgo := metav1.NewTime(now.Add(-1 * time.Minute))
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validCache.Entries = []entry{{
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Key: jsonSHA256Hex(testKey{K1: "v1", K2: "v2"}),
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CreationTimestamp: metav1.NewTime(now.Add(-2 * time.Minute)),
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LastUsedTimestamp: metav1.NewTime(now.Add(-1 * time.Minute)),
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Credential: &clientauthenticationv1beta1.ExecCredentialStatus{
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Token: "test-token",
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ExpirationTimestamp: &oneMinuteAgo,
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},
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}}
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require.NoError(t, validCache.writeTo(tmp))
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},
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key: testKey{K1: "v1", K2: "v2"},
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wantErrors: []string{},
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},
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{
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name: "valid file with cache hit",
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makeTestFile: func(t *testing.T, tmp string) {
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validCache := emptyCache()
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validCache.Entries = []entry{{
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Key: jsonSHA256Hex(testKey{K1: "v1", K2: "v2"}),
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CreationTimestamp: metav1.NewTime(now.Add(-2 * time.Minute)),
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LastUsedTimestamp: metav1.NewTime(now.Add(-1 * time.Minute)),
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Credential: &clientauthenticationv1beta1.ExecCredentialStatus{
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Token: "test-token",
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ExpirationTimestamp: &oneHourFromNow,
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},
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}}
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require.NoError(t, validCache.writeTo(tmp))
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},
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key: testKey{K1: "v1", K2: "v2"},
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wantErrors: []string{},
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want: &clientauthenticationv1beta1.ExecCredential{
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TypeMeta: metav1.TypeMeta{
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Kind: "ExecCredential",
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APIVersion: "client.authentication.k8s.io/v1beta1",
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},
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Spec: clientauthenticationv1beta1.ExecCredentialSpec{},
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Status: &clientauthenticationv1beta1.ExecCredentialStatus{
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Token: "test-token",
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ExpirationTimestamp: &oneHourFromNow,
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},
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},
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wantTestFile: func(t *testing.T, tmp string) {
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cache, err := readCache(tmp)
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require.NoError(t, err)
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require.Len(t, cache.Entries, 1)
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require.Less(t, time.Since(cache.Entries[0].LastUsedTimestamp.Time).Nanoseconds(), (5 * time.Second).Nanoseconds())
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},
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},
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}
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for _, tt := range tests {
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tt := tt
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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tmp := testutil.TempDir(t) + "/sessions.yaml"
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if tt.makeTestFile != nil {
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tt.makeTestFile(t, tmp)
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}
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// Initialize a cache with a reporter that collects errors
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errors := errorCollector{t: t}
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c := New(tmp)
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c.errReporter = errors.report
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if tt.trylockFunc != nil {
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c.trylockFunc = func() error { return tt.trylockFunc(t) }
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}
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if tt.unlockFunc != nil {
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c.unlockFunc = func() error { return tt.unlockFunc(t) }
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}
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got := c.Get(tt.key)
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require.Equal(t, tt.want, got)
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errors.require(tt.wantErrors, "TEMPFILE", tmp)
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if tt.wantTestFile != nil {
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tt.wantTestFile(t, tmp)
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}
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})
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}
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}
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func TestPutToken(t *testing.T) {
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t.Parallel()
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now := time.Now().Round(1 * time.Second)
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type testKey struct{ K1, K2 string }
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tests := []struct {
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name string
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makeTestFile func(t *testing.T, tmp string)
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key testKey
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cred *clientauthenticationv1beta1.ExecCredential
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wantErrors []string
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wantTestFile func(t *testing.T, tmp string)
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}{
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{
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name: "fail to create directory",
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makeTestFile: func(t *testing.T, tmp string) {
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require.NoError(t, os.WriteFile(filepath.Dir(tmp), []byte{}, 0600))
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},
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wantErrors: []string{
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"could not create credential cache directory: mkdir TEMPDIR: not a directory",
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},
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},
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{
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name: "update to existing entry",
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makeTestFile: func(t *testing.T, tmp string) {
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validCache := emptyCache()
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validCache.Entries = []entry{
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{
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Key: jsonSHA256Hex(testKey{K1: "v1", K2: "v2"}),
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CreationTimestamp: metav1.NewTime(now.Add(-2 * time.Minute)),
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LastUsedTimestamp: metav1.NewTime(now.Add(-1 * time.Minute)),
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Credential: &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: timePtr(now.Add(1 * time.Hour)),
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Token: "token-one",
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},
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},
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// A second entry that was created over a day ago.
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{
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Key: jsonSHA256Hex(testKey{K1: "v3", K2: "v4"}),
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CreationTimestamp: metav1.NewTime(now.Add(-2 * time.Hour)),
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LastUsedTimestamp: metav1.NewTime(now.Add(-1 * time.Hour)),
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Credential: &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: timePtr(now.Add(1 * time.Hour)),
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Token: "token-two",
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},
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},
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}
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require.NoError(t, os.MkdirAll(filepath.Dir(tmp), 0700))
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require.NoError(t, validCache.writeTo(tmp))
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},
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key: testKey{K1: "v1", K2: "v2"},
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cred: &clientauthenticationv1beta1.ExecCredential{
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TypeMeta: metav1.TypeMeta{
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Kind: "ExecCredential",
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APIVersion: "client.authentication.k8s.io/v1beta1",
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},
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Status: &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: timePtr(now.Add(1 * time.Hour)),
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Token: "token-one",
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},
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},
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wantTestFile: func(t *testing.T, tmp string) {
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cache, err := readCache(tmp)
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require.NoError(t, err)
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require.Len(t, cache.Entries, 1)
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require.Less(t, time.Since(cache.Entries[0].LastUsedTimestamp.Time).Nanoseconds(), (5 * time.Second).Nanoseconds())
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require.Equal(t, &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: timePtr(now.Add(1 * time.Hour).Local()),
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Token: "token-one",
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}, cache.Entries[0].Credential)
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},
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},
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{
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name: "new entry",
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makeTestFile: func(t *testing.T, tmp string) {
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validCache := emptyCache()
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validCache.Entries = []entry{
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{
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Key: jsonSHA256Hex(testKey{K1: "v3", K2: "v4"}),
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CreationTimestamp: metav1.NewTime(now.Add(-2 * time.Minute)),
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LastUsedTimestamp: metav1.NewTime(now.Add(-1 * time.Minute)),
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Credential: &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: timePtr(now.Add(1 * time.Hour)),
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Token: "other-token",
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},
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},
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}
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require.NoError(t, os.MkdirAll(filepath.Dir(tmp), 0700))
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require.NoError(t, validCache.writeTo(tmp))
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},
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key: testKey{K1: "v1", K2: "v2"},
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cred: &clientauthenticationv1beta1.ExecCredential{
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TypeMeta: metav1.TypeMeta{
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Kind: "ExecCredential",
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APIVersion: "client.authentication.k8s.io/v1beta1",
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},
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Status: &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: timePtr(now.Add(1 * time.Hour)),
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Token: "token-one",
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},
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},
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wantTestFile: func(t *testing.T, tmp string) {
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cache, err := readCache(tmp)
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require.NoError(t, err)
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require.Len(t, cache.Entries, 2)
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require.Less(t, time.Since(cache.Entries[1].LastUsedTimestamp.Time).Nanoseconds(), (5 * time.Second).Nanoseconds())
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require.Equal(t, &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: timePtr(now.Add(1 * time.Hour).Local()),
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Token: "token-one",
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}, cache.Entries[1].Credential)
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},
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},
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{
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name: "error writing cache",
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makeTestFile: func(t *testing.T, tmp string) {
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require.NoError(t, os.MkdirAll(tmp, 0700))
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},
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key: testKey{K1: "v1", K2: "v2"},
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cred: &clientauthenticationv1beta1.ExecCredential{
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TypeMeta: metav1.TypeMeta{
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Kind: "ExecCredential",
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APIVersion: "client.authentication.k8s.io/v1beta1",
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},
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Status: &clientauthenticationv1beta1.ExecCredentialStatus{
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ExpirationTimestamp: timePtr(now.Add(1 * time.Hour)),
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Token: "token-one",
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},
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},
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wantErrors: []string{
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"failed to read cache, resetting: could not read cache file: read TEMPFILE: is a directory",
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"could not write cache: open TEMPFILE: is a directory",
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},
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},
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}
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for _, tt := range tests {
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tt := tt
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t.Run(tt.name, func(t *testing.T) {
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t.Parallel()
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tmp := testutil.TempDir(t) + "/cachedir/credentials.yaml"
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if tt.makeTestFile != nil {
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tt.makeTestFile(t, tmp)
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}
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// Initialize a cache with a reporter that collects errors
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errors := errorCollector{t: t}
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c := New(tmp)
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c.errReporter = errors.report
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c.Put(tt.key, tt.cred)
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errors.require(tt.wantErrors, "TEMPFILE", tmp, "TEMPDIR", filepath.Dir(tmp))
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if tt.wantTestFile != nil {
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tt.wantTestFile(t, tmp)
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}
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})
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}
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}
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func TestHashing(t *testing.T) {
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type testKey struct{ K1, K2 string }
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require.Equal(t, "38e0b9de817f645c4bec37c0d4a3e58baecccb040f5718dc069a72c7385a0bed", jsonSHA256Hex(nil))
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require.Equal(t, "625bb1f93dc90a1bda400fdaceb8c96328e567a0c6aaf81e7fccc68958b4565d", jsonSHA256Hex([]string{"k1", "k2"}))
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require.Equal(t, "8fb659f5dd266ffd8d0c96116db1d96fe10e3879f9cb6f7e9ace016696ff69f6", jsonSHA256Hex(testKey{K1: "v1", K2: "v2"}))
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require.Equal(t, "42c783a2c29f91127b064df368bda61788181d2dd1709b417f9506102ea8da67", jsonSHA256Hex(testKey{K1: "v3", K2: "v4"}))
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require.Panics(t, func() { jsonSHA256Hex(&unmarshalable{}) })
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}
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type errorCollector struct {
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t *testing.T
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saw []error
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}
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func (e *errorCollector) report(err error) {
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e.saw = append(e.saw, err)
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}
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func (e *errorCollector) require(want []string, subs ...string) {
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require.Len(e.t, e.saw, len(want))
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for i, w := range want {
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for i := 0; i < len(subs); i += 2 {
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w = strings.ReplaceAll(w, subs[i], subs[i+1])
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}
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require.EqualError(e.t, e.saw[i], w)
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}
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}
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func timePtr(from time.Time) *metav1.Time {
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t := metav1.NewTime(from)
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return &t
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}
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type unmarshalable struct{}
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func (*unmarshalable) MarshalJSON() ([]byte, error) { return nil, fmt.Errorf("some MarshalJSON error") }
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