1747452 - Figure out how to test `window.print()` with `print.always_print_silent` and land a test

Status: NEW

(Core :: Printing: Output, enhancement, P3)

Description

[Jonathan Watt [:jwatt]]

In bug 1741698 I'm landing a revert patch to get window.print() with print.always_print_silent working again. That creates a default 'mozilla.pdf' file in the working directory of the running Firefox instance, but I'm not sure how to test that that file is created and non-zero. This bug is to cover figuring that out and landing a test.

Comment 1

[Daniel Holbert [:dholbert] (PTO until 2/24)]

(In reply to Jonathan Watt [:jwatt] from comment #0)

In bug 1741698 I'm landing a revert patch to get window.print() with print.always_print_silent working again. That creates a default 'mozilla.pdf' file in the working directory of the running Firefox instance

I'm not seeing that mozilla.pdf file get created (on Linux) FWIW, when I invoke window.print() with print.always_print_silent (and with print_printer set to "Mozilla Save to PDF").

Maybe I'm missing a step, though -- does that file get created in the working directory for you? (Do you recall if you were testing on Linux / Windows / macOS when you saw it get created in the working directory?)

Comment 2

[Daniel Holbert [:dholbert] (PTO until 2/24)]

Nonetheless we do seem to exercise our PDF-printing-backend, when I try to test this on Linux. We e.g. execute mozilla::gfx::PrintTargetPDF::Finish as shown in the second profile link in bug 1879474 comment 4 where I'm essentially testing the setup in commetn 0 here (though with Ctrl+P instead of window.print).

Profile link showing PrintTargetPDF::Finish being executed: https://share.firefox.dev/3SVtDEx

(But I'm still not sure where the PDF ends up.)

Comment 3

[Daniel Holbert [:dholbert] (PTO until 2/24)]

(In reply to Daniel Holbert [:dholbert] from comment #1)

I'm not seeing that mozilla.pdf file get created (on Linux) FWIW, when I invoke window.print() with print.always_print_silent (and with print_printer set to "Mozilla Save to PDF").

I just retested this in current Nightly and I'm still seeing this issue; I can't find the silently generated PDF (it's not in my working directory, home directory, firefox executable directory, or /tmp).