style: Add support to test animations programatically.

[emilio]

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• ./mach build -d does not report any errors
• ./mach test-tidy does not report any errors
• These changes fix #12120

• There are tests for these changes OR

r? @SimonSapin for the style changes, @Ms2ger or @jdm for the dom and test changes

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This change is

[highfive]

Heads up! This PR modifies the following files:

• @bholley: components/style/lib.rs, components/style/timer.rs, components/style/context.rs, components/style/animation.rs, components/style/matching.rs
• @KiChjang: components/script/dom/testbinding.rs, components/script/dom/webidls/TestBinding.webidl, components/script/script_thread.rs, components/script/dom/window.rs, components/script_layout_interface/message.rs, components/script_traits/lib.rs, components/script_traits/lib.rs

[SimonSapin]

Reviewed 2 of 2 files at r1, 19 of 19 files at r2.
Review status: all files reviewed at latest revision, 3 unresolved discussions.

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components/servo/Cargo.lock, line 1168 [r2] (raw file):

 "style 0.0.1",
 "style_traits 0.0.1",
 "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",

You probably want to run something like ./mach cargo-update -p layout to update ports/cef/Cargo.lock.

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components/style/matching.rs, line 461 [r2] (raw file):

                                     context: &SharedStyleContext<<Self::ConcreteElement as Element>::Impl>,
                                     style: &mut Option<&mut
                                     Arc<Self::ConcreteComputedValues>>)

This is an usual place to insert a line break. Is it needed at all?

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components/style/timer.rs, line 52 [r2] (raw file):

        if let TimerMode::Test(ref mut val) = self.mode {
            *val += by;
        }

Should this panic in non-test mode? I think an else { panic!(…) } here could replace the assertion in handle_advance_clock_ms.

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Comments from Reviewable

[emilio]

Review status: all files reviewed at latest revision, 3 unresolved discussions.

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components/servo/Cargo.lock, line 1168 [r2] (raw file):

Previously, SimonSapin (Simon Sapin) wrote…

You probably want to run something like ./mach cargo-update -p layout to update ports/cef/Cargo.lock.

Done

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components/style/matching.rs, line 461 [r2] (raw file):

Previously, SimonSapin (Simon Sapin) wrote…

This is an usual place to insert a line break. Is it needed at all?

Whoops, sorry, bad autoformatting :)

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components/style/timer.rs, line 52 [r2] (raw file):

Previously, SimonSapin (Simon Sapin) wrote…

Should this panic in non-test mode? I think an else { panic!(…) } here could replace the assertion in handle_advance_clock_ms.

Makes sense, done :)

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Comments from Reviewable

[SimonSapin]

@bors-servo r+

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Reviewed 4 of 4 files at r3.
Review status: all files reviewed at latest revision, all discussions resolved.

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Comments from Reviewable

[bors-servo]

📌 Commit 1fad86e has been approved by SimonSapin

[bors-servo]

🔒 Merge conflict

[bors-servo]

☔ The latest upstream changes (presumably #12515) made this pull request unmergeable. Please resolve the merge conflicts.

[emilio]

@bors-servo: r=SimonSapin

[bors-servo]

📌 Commit 0b67b21 has been approved by SimonSapin

[bors-servo]

⌛ Testing commit 0b67b21 with merge 14aeccc...

[bors-servo]

☀️ Test successful - android, arm32, arm64, linux-dev, linux-rel, mac-dev-unit, mac-rel-css, mac-rel-wpt, windows-dev