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1Protocol Buffers - Google's data interchange format
2===================================================
3
4Copyright 2008 Google Inc.
5
6This directory contains conformance tests for testing completeness and
7correctness of Protocol Buffers implementations.  These tests are designed
8to be easy to run against any Protocol Buffers implementation.
9
10This directory contains the tester process `conformance-test`, which
11contains all of the tests themselves.  Then separate programs written
12in whatever language you want to test communicate with the tester
13program over a pipe.
14
15Before running any of these tests, make sure you run `make` in the base
16directory to build `protoc`, since all the tests depend on it.
17
18    $ make
19
20Running the tests for C++
21-------------------------
22
23To run the tests against the C++ implementation, run:
24
25    $ cd conformance && make test_cpp
26
27Running the tests for JavaScript (Node.js)
28------------------------------------------
29
30To run the JavaScript tests against Node.js, make sure you have "node"
31on your path and then run:
32
33    $ cd conformance && make test_nodejs
34
35Running the tests for Ruby (MRI)
36--------------------------------
37
38To run the Ruby tests against MRI, first build the C extension:
39
40    $ cd ruby && rake
41
42Then run the tests like so:
43
44    $ cd conformance && make test_ruby
45
46Running the tests for other languages
47-------------------------------------
48
49Most of the languages in the Protobuf source tree are set up to run
50conformance tests.  However some of them are more tricky to set up
51properly.  See `tests.sh` in the base of the repository to see how
52Travis runs the tests.
53
54Testing other Protocol Buffer implementations
55---------------------------------------------
56
57To run these tests against a new Protocol Buffers implementation, write a
58program in your language that uses the protobuf implementation you want
59to test.  This program should implement the testing protocol defined in
60[conformance.proto](https://github.com/protocolbuffers/protobuf/blob/master/conformance/conformance.proto).
61This is designed to be as easy as possible: the C++ version is only
62150 lines and is a good example for what this program should look like
63(see [conformance_cpp.cc](https://github.com/protocolbuffers/protobuf/blob/master/conformance/conformance_cpp.cc)).
64The program only needs to be able to read from stdin and write to stdout.
65
66Portability
67-----------
68
69Note that the test runner currently does not work on Windows.  Patches
70to fix this are welcome!  (But please get in touch first to settle on
71a general implementation strategy).
72