Test css.getLonghandProperties method

Running test: testInvalidProperty
Test getLonghandPropertiesFont for non-existing property
marg: 10px 50px 20px 0
Resolved longands:
{"code":-32000,"message":"Invalid shorthandName"}

Running test: testInvalidValue
Test getLonghandPropertiesFont for invalid value
font: italic small cursive
Resolved longands:
font-style: italic
font-variant-caps: normal
font-variant-ligatures: normal
font-variant-numeric: normal
font-variant-east-asian: normal
font-variant-alternates: normal
font-size-adjust: none
font-language-override: normal
font-kerning: auto
font-optical-sizing: auto
font-feature-settings: normal
font-variation-settings: normal
font-variant-position: normal
font-variant-emoji: normal
font-weight: normal
font-stretch: normal
font-size: small
line-height: normal
font-family: cursive

Running test: testLonghandValue
Test getLonghandPropertiesFont for longhand property
font-style: italic
Resolved longands:
{"code":-32000,"message":"Invalid shorthandName"}

Running test: testFontProperty
Test getLonghandPropertiesFont for font property
font: italic small-caps bold 16px/2 cursive
Resolved longands:
font-style: italic
font-variant-caps: small-caps
font-variant-ligatures: normal
font-variant-numeric: normal
font-variant-east-asian: normal
font-variant-alternates: normal
font-size-adjust: none
font-language-override: normal
font-kerning: auto
font-optical-sizing: auto
font-feature-settings: normal
font-variation-settings: normal
font-variant-position: normal
font-variant-emoji: normal
font-weight: bold
font-stretch: normal
font-size: 16px
line-height: 2
font-family: cursive

Running test: testMarginProperty
Test getLonghandPropertiesFont for margin property
margin: 10px 50px 20px 0
Resolved longands:
margin-top: 10px
margin-right: 50px
margin-bottom: 20px
margin-left: 0px

Running test: testBackgroundProperty
Test getLonghandPropertiesFont for background property
background: center / contain no-repeat url("../../media/examples/firefox-logo.svg"), #eee 35% url("../../media/examples/lizard.png")
Resolved longands:
background-image: url("../../media/examples/firefox-logo.svg"), url("../../media/examples/lizard.png")
background-position-x: center, 35%
background-position-y: center, center
background-size: contain, initial
background-repeat: no-repeat, initial
background-attachment: initial, initial
background-origin: initial, initial
background-clip: initial, initial
background-color: rgb(238, 238, 238)