package repository import ( "context" "fmt" "os" "testing" "github.com/restic/restic/internal/backend/local" "github.com/restic/restic/internal/backend/mem" "github.com/restic/restic/internal/crypto" "github.com/restic/restic/internal/restic" "github.com/restic/restic/internal/test" "github.com/restic/chunker" ) // testKDFParams are the parameters for the KDF to be used during testing. var testKDFParams = crypto.Params{ N: 128, R: 1, P: 1, } type logger interface { Logf(format string, args ...interface{}) } // TestUseLowSecurityKDFParameters configures low-security KDF parameters for testing. func TestUseLowSecurityKDFParameters(t logger) { t.Logf("using low-security KDF parameters for test") Params = &testKDFParams } // TestBackend returns a fully configured in-memory backend. func TestBackend(t testing.TB) (be restic.Backend, cleanup func()) { return mem.New(), func() {} } const TestChunkerPol = chunker.Pol(0x3DA3358B4DC173) // TestRepositoryWithBackend returns a repository initialized with a test // password. If be is nil, an in-memory backend is used. A constant polynomial // is used for the chunker and low-security test parameters. func TestRepositoryWithBackend(t testing.TB, be restic.Backend, version uint) (r restic.Repository, cleanup func()) { t.Helper() TestUseLowSecurityKDFParameters(t) restic.TestDisableCheckPolynomial(t) var beCleanup func() if be == nil { be, beCleanup = TestBackend(t) } repo := New(be, Options{}) cfg := restic.TestCreateConfig(t, TestChunkerPol, version) err := repo.init(context.TODO(), test.TestPassword, cfg) if err != nil { t.Fatalf("TestRepository(): initialize repo failed: %v", err) } return repo, func() { if beCleanup != nil { beCleanup() } } } // TestRepository returns a repository initialized with a test password on an // in-memory backend. When the environment variable RESTIC_TEST_REPO is set to // a non-existing directory, a local backend is created there and this is used // instead. The directory is not removed, but left there for inspection. func TestRepository(t testing.TB) (r restic.Repository, cleanup func()) { t.Helper() return TestRepositoryWithVersion(t, 0) } func TestRepositoryWithVersion(t testing.TB, version uint) (r restic.Repository, cleanup func()) { t.Helper() dir := os.Getenv("RESTIC_TEST_REPO") if dir != "" { _, err := os.Stat(dir) if err != nil { be, err := local.Create(context.TODO(), local.Config{Path: dir}) if err != nil { t.Fatalf("error creating local backend at %v: %v", dir, err) } return TestRepositoryWithBackend(t, be, version) } if err == nil { t.Logf("directory at %v already exists, using mem backend", dir) } } return TestRepositoryWithBackend(t, nil, version) } // TestOpenLocal opens a local repository. func TestOpenLocal(t testing.TB, dir string) (r restic.Repository) { be, err := local.Open(context.TODO(), local.Config{Path: dir, Connections: 2}) if err != nil { t.Fatal(err) } repo := New(be, Options{}) err = repo.SearchKey(context.TODO(), test.TestPassword, 10, "") if err != nil { t.Fatal(err) } return repo } type VersionedTest func(t *testing.T, version uint) func TestAllVersions(t *testing.T, test VersionedTest) { for version := restic.MinRepoVersion; version <= restic.MaxRepoVersion; version++ { t.Run(fmt.Sprintf("v%d", version), func(t *testing.T) { test(t, uint(version)) }) } } type VersionedBenchmark func(b *testing.B, version uint) func BenchmarkAllVersions(b *testing.B, bench VersionedBenchmark) { for version := restic.MinRepoVersion; version <= restic.MaxRepoVersion; version++ { b.Run(fmt.Sprintf("v%d", version), func(b *testing.B) { bench(b, uint(version)) }) } }