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8 Commits

Author SHA1 Message Date
Ryan Harrison 5dc0ea7cce Unify fuzzer random number generation into a single class 
BUG=tint:1098

Change-Id: I84931804515487d931bbbb5f0d5239d03ca76dfc
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/63300
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Alastair Donaldson <afdx@google.com>
 2021-09-03 00:59:35 +00:00
Vasyl Teliman 4ebede411e Run fuzzer unit tests in Kokoro 
This CL adjusts the scripts to be able to run AST and regex
fuzzer unit tests in Kokoro. Only clang is supported for now.

Change-Id: Ibc9ebb9cf0dc40f47317abf88875aa738811919d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/61642
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Vasyl Teliman <vasniktel@gmail.com>
 2021-08-11 14:10:05 +00:00
Ryan Harrison 5085efb748 Add robustness pass to ast and regex fuzzers 
Fixed: tint:1104
Change-Id: I4ea3aa283c1c4b5e55f507dbc104b21c8bedb63b
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/61521
Auto-Submit: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: James Price <jrprice@google.com>
Kokoro: James Price <jrprice@google.com>
 2021-08-11 13:02:45 +00:00
egj 608738d59b Regex fuzzer: replace the value of an integer with 
a value in the set {INT_MAX, INT_MIN, -1 or 0}.

A mutation that replaces the value of a randomly-chosen integer with a value
in the set {INT_MAX, INT_MIN, -1, 0}.

Fixes: tint:1093.

Change-Id: I5ec69e1813785760ed6e7b06d0cbd9c481f69ade
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60920
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Alastair Donaldson <afdx@google.com>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-08-05 22:24:20 +00:00
egj 98fbf241d8 Regex fuzzer: identifier mutation 
Mutates a WGSL-like string by replacing a randomly-selected identifier
with a different randomly-selected identifier.

Change-Id: Iecf45ad2800677cf3609b30d415520e5f2a05ba0
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60561
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Alastair Donaldson <afdx@google.com>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-08-04 07:12:20 +00:00
egj b75e4b96a6 Regex fuzzer: Change the region boundaries 
Changes the interval boundaries to exclude the first delimiter
that encloses a region.

Change-Id: Ia9186e584d9038b4220cad11d418fa9881e51e8d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60346
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Alastair Donaldson <afdx@google.com>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-08-02 20:56:39 +00:00
egj f5490c732d Regex fuzzer: region deletion and duplication 
Adds two transformations, one that deletes a random region enclosed
by a given delimiter and another one that duplicates a region by
inserting it at a position of the WGSL code after a delimiter.

Fixes: tint:1072.
Fixes: tint:1073.

Change-Id: Icb10a7f16a783d5eb8f75a48c4015eb87ea1d174
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60200
Reviewed-by: Alastair Donaldson <afdx@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-07-29 15:40:57 +00:00
egj cc6d5b464d Add regex fuzzer 
A fuzzer that mutates a WGSL code by finding two regions enclosed by
semicolons and swapping them randomly.

Change-Id: I5b14eb21fd2924227d05ac516f806c6e2efa6198
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/58395
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Alastair Donaldson <afdx@google.com>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: Alastair Donaldson <afdx@google.com>
 2021-07-28 11:11:26 +00:00