internal/fuzztest: factor out common fuzzer tests
All the fuzzers have the same test, which runs the fuzzer against every
entry in the corpus. Move the test logic into a separate package.
Change-Id: I3a7e2ca75d20a5ff6d51ed9e6151629e6667684b
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/212258
Reviewed-by: Joe Tsai <joetsai@google.com>
diff --git a/internal/fuzz/textfuzz/fuzz.go b/internal/fuzz/textfuzz/fuzz.go
index bd89da0..242e4b6 100644
--- a/internal/fuzz/textfuzz/fuzz.go
+++ b/internal/fuzz/textfuzz/fuzz.go
@@ -2,7 +2,7 @@
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
-// Package textfuzz includes a fuzzer for the text marshaler and unmarshaler.
+// Package textfuzz includes fuzzers for prototext.Marshal and prototext.Unmarshal.
package textfuzz
import (