[tap] Fwd: concatenated streams discussion from tap-l
Gaurav Vaidya <gaurav@ggvaidya.com> Sun, 29 August 2010 14:40 UTC
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From: Gaurav Vaidya <gaurav@ggvaidya.com>
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Date: Sun, 29 Aug 2010 22:41:00 +0800
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Cc: EBo <ebo@sandien.com>
Subject: [tap] Fwd: concatenated streams discussion from tap-l
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Hey everybody, As some of you know, EBo (who's working on a TAP producer on the Plan 9 operating system) has some ideas about adding test names into the TAP header and has been sharing these on the tap-l@testanything.org list. He's been having problems signing up for the IETF mailing list, and so has asked me to forward his proposal onto this list. cheers, Gaurav --- From: ebo@sandien.com Subject: concatenated streams discussion from tap-l Date: August 29, 2010 1:31:19 PM SST While on the tap-l forum I started a thread on parsing concatenated streams <http://testanything.org/pipermail/tap-l/2010-August/000344.html> The upshot of the thread is that by simply adding naming to TAP plans allows a concatenated stream to be fully reparsed by a consumer. I have since modified the proposed grammar slightly to allow different versions of TAP plans to be embedded in the stream: ========================= ; allow parsing of concatenated streams from different versions of TAP ; to be interspersed. It also allows for an empty file to be ; considered a valid TAP stream. Stream = *Testset Testset = Header [Comments] [Test-Name] (Plan Body / Body Plan) Footer Test-Name = "NAME" SP Name-String [SP Description] EOL ; test names are printable UTF8 without SPACE, DEL or "#" Name-String = 1*(%x21-22 %x24-7E %x80-FF) ========================= With this addition I was able to reparse Test::Harness's verbose output and regenerate the complete plan-by-plan statistics after the fact. So, the results of runtests can be dumped to a file or pipe and later parsed by consumers. There are a number of subtle variants of the proposed grammar which might be more suitable, but Test::Harness's prove command already dumps the file name to the output as the first item output, and just prior to the plan. Unfortunately it does not explicitly tag it, so there is no way to know if this is a line to be ignored or to be taken as the name. Also, while the test names end in the .t extension it is not a requirement, and a potential problem with assuming that the name is always there could potentially break consumers. If we take Test::Harness as the canonical source, then the current behavior is actually more closely interpreted as: Testset = Header [Comments] Test-Name (Plan Body / Body Plan) Footer Test-Name = Name-String [SP Description] EOL As a note, I later discovered that naming and concatenated threads addresses issues in the things missing from TAP document <http://testanything.org/wiki/index.php/Things_missing_from_TAP>, but does not address any hierarchical nesting of plans, just concatenated ones. Anyway, I am soliciting comments on the above proposal to add name tags to TAPv14. Best regards, EBo --
- [tap] Fwd: concatenated streams discussion from t… Gaurav Vaidya