Use protobuild to generate test messages, both to simplify generating
proto2/proto3/extension variants of each test where appropriate and
to make it easier to test alternative message generators in the future.
Add various additional merge tests.
Change-Id: I4ba3ce232304e1d8325543680e2b6aae61de7364
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/219146
Reviewed-by: Joe Tsai <joetsai@google.com>
The proto package tests often test several variations of messages with a
similar shape. For example, most tests are performed with a proto2
message with a regular field, a proto2 message with an extension field,
and a proto3 message.
Add a protobuild package which can initialize all these variations from
a single template. For example, these three messages:
&testpb.TestAllTypes{OptionalInt32: proto.Int32(1)}
&test3pb.TestAllTypes{OptionalInt32: 1}
m := &testpb.TestAllExtensions{}
proto.SetExtension(m, &testpb.E_OptionalInt32, 1)
can all be constructed from the template:
protobuild.Message{"optional_int32": 1}
This reduces redundancy in tests and will make it more practical to
test alternative code generators.
Change-Id: I3245a4bf74ee1bce957bc772fed513d427720677
Reviewed-on: https://go-review.googlesource.com/c/protobuf/+/217457
Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>
