How to regenerate linux, mac and windows test puff files:

If changes are made to puffin_app_v1/main.cc or puffin_app_v2/main.cc, the various puff files which represent a patch between the crx‘s produced by each of these sources. Thus, we’ll need to regenerate these on each platform.

This README assumes you are already in your Chromium repo's src directory, that your gn args were generated in “src/out/Default”, and that you are able to build the third_party/puffin:puffin target. To make sure puffin is building, for the time being we have to add the following to our gn args:

enable_puffin_patches = true

Linux and Mac commands

autoninja -C out/Default puffin puffin_app_v1 puffin_app_v2
rm components/test/data/update_client/puffin_patch_test/puffin_app_v1_to_v2.puff
rm components/test/data/update_client/puffin_patch_test/puffin_app_v2_to_v1.puff
out/Default/puffin -puffdiff out/Default/puffin_app_v1.crx3 out/Default/puffin_app_v2.crx3 components/test/data/update_client/puffin_patch_test/puffin_app_v1_to_v2.puff
out/Default/puffin -puffdiff out/Default/puffin_app_v2.crx3 out/Default/puffin_app_v1.crx3 components/test/data/update_client/puffin_patch_test/puffin_app_v2_to_v1.puff
cp out/Default/puffin_app_v1_crx.crx3 components/test/data/update_client/puffin_patch_test/puffin_app_v1.crx3
cp out/Default/puffin_app_v2_crx.crx3 components/test/data/update_client/puffin_patch_test/puffin_app_v2.crx3

Windows commands

autoninja -C out\Default puffin puffin_app_v1_crx puffin_app_v2_crx
del /f  components\test\data\update_client\puffin_patch_test\puffin_app_v1_to_v2.puff
del /f  components\test\data\update_client\puffin_patch_test\puffin_app_v2_to_v1.puff
out\Default\puffin.exe -puffdiff out\Default\puffin_app_v1.crx3 out\Default\puffin_app_v2.crx3 chrome\test\data\updater\puffin_patch_test\puffin_app_v1_to_v2.puff
out\Default\puffin.exe -puffdiff out\Default\puffin_app_v2.crx3 out\Default\puffin_app_v1.crx3 chrome\test\data\updater\puffin_patch_test\puffin_app_v2_to_v1.puff
cp out\Default\puffin_app_v1_crx.crx3 components\test\data\update_client\puffin_patch_test\puffin_app_v1.crx3
cp out\Default\puffin_app_v2_crx.crx3 components\test\data\update_client\puffin_patch_test\puffin_app_v2.crx3

Testing the new patches

You can test but running the following commands to verify if all tests pass, on each platform. Specifically the “PatchingTest.ApplyPuffPatchTest”:

Mac and Linux: autoninja -C out/Default puffin_unittest out/Default/puffin_unittest

Windows: autoninja -C out\Default puffin_unittest out\Default\puffin_unittest.exe