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95f440eaa0
That PR contains an example of how fuzz tests can be written with Go 1.18. It also fixes a few panics with invalid configs. Signed-off-by: Alexey Palazhchenko <alexey.palazhchenko@talos-systems.com>
98 lines
2.1 KiB
Go
98 lines
2.1 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package configloader_test
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import (
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"os"
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"path/filepath"
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"reflect"
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"testing"
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"github.com/stretchr/testify/require"
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"github.com/talos-systems/talos/pkg/machinery/config/configloader"
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)
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// callMethods calls obj's "getter" methods recursively and fails on panic.
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func callMethods(t testing.TB, obj reflect.Value, chain ...string) {
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t.Helper()
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typ := obj.Type()
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for i := 0; i < obj.NumMethod(); i++ {
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method := obj.Method(i)
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if method.Type().NumIn() != 0 {
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continue
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}
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methodName := typ.Method(i).Name
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nextChain := make([]string, len(chain)+1)
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copy(nextChain, chain)
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nextChain[len(nextChain)-1] = methodName
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// t.Log(nextChain)
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// skip known broken methods
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switch methodName {
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case "GetRSAKey", "GetEd25519Key", "GetECDSAKey", "GetCert", "GetKey":
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fallthrough
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case "MarshalYAML":
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fallthrough
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case "Endpoint":
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// t.Logf("Skipping %v", nextChain)
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continue
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}
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var resS []reflect.Value
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require.NotPanics(t, func() { resS = method.Call(nil) }, "Method chain: %v", nextChain)
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if len(resS) == 0 {
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continue
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}
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res := resS[0]
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// skip result if it has the same type
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// to avoid infinite recursion on methods like DeepCopy
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if res.Type() == typ {
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continue
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}
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callMethods(t, res, nextChain...)
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}
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}
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func testConfigLoaderBytes(t testing.TB, b []byte) {
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t.Helper()
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p, err := configloader.NewFromBytes(b)
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if err != nil {
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t.Skipf("Failed to load, skipping: %s.", err)
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}
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callMethods(t, reflect.ValueOf(p))
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}
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// TODO(aleksi): maybe remove once Go 1.18 is out; see https://github.com/golang/go/issues/47413
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func TestConfigLoader(t *testing.T) {
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t.Parallel()
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files, err := filepath.Glob(filepath.Join("testdata", "*.test"))
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require.NoError(t, err)
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for _, file := range files {
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file := file
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t.Run(file, func(t *testing.T) {
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t.Parallel()
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b, err := os.ReadFile(file)
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require.NoError(t, err)
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testConfigLoaderBytes(t, b)
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})
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}
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}
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