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Diffstat (limited to '')
-rw-r--r-- | devtools/client/responsive/test/xpcshell/test_change_display_pixel_ratio.js | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/devtools/client/responsive/test/xpcshell/test_change_display_pixel_ratio.js b/devtools/client/responsive/test/xpcshell/test_change_display_pixel_ratio.js new file mode 100644 index 0000000000..7cc2604b7b --- /dev/null +++ b/devtools/client/responsive/test/xpcshell/test_change_display_pixel_ratio.js @@ -0,0 +1,26 @@ +/* Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ */ + +"use strict"; + +// Test changing the display pixel ratio. + +const { + changeDisplayPixelRatio, +} = require("resource://devtools/client/responsive/actions/ui.js"); + +const NEW_PIXEL_RATIO = 5.5; + +add_task(async function () { + const store = Store(); + const { getState, dispatch } = store; + + equal(getState().ui.displayPixelRatio, 0, "Defaults to 0 at startup"); + + dispatch(changeDisplayPixelRatio(NEW_PIXEL_RATIO)); + equal( + getState().ui.displayPixelRatio, + NEW_PIXEL_RATIO, + `Display Pixel Ratio changed to ${NEW_PIXEL_RATIO}` + ); +}); |