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TAP, the Test Anything Protocol, is a simple text-based interface between testing modules in a test harness. TAP started life as part of the test harness for Perl but now has implementations in C/C++, Python, PHP, Perl and probably others by the time you read this.

Here's what a TAP test transcript looks like (using the development version):

   TAP version 13
   1..4
   ok 1 - Input file opened
   not ok 2 - First line of the input valid
     ---
     message: 'First line invalid'
     severity: fail
     data:
       got: 'Flirble'
       expect: 'Fnible'
     ...
   ok 3 - Read the rest of the file
   not ok 4 - Summarized correctly # TODO Not written yet
     ---
     message: "Can't make summary yet"
     severity: todo
     ... 

Starting Points

Testing with TAP

• Testing with TAP - How to run TAP based tests in your language of choice

TAP Development

• TAP Producers - Testing tools that generate TAP output
• TAP Consumers - Test harnesses that read TAP
• TAP Proposals - What next?
• TAP Philosophy - The Tao of TAP
• TAP History - The story of TAP
• YAMLish - TAP's embedded YAML dialect
• Things missing from TAP

Other Test Protocols

• TET - the Test Environment Toolkit

Help

• FAQ

External Resources

• TAP specification
• TAP version 13 specification
• Wikipedia article on TAP

Mailing Lists

• TAP-L - For discussion of the Test Anything Protocol
• TAPX-DEV - For developers of TAP::Parser and other interested parties. Perl specific.