Test whether CSSHostRule API works correctly or not.

On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".


Before inserting a border rule into @host @-rules:
PASS getComputedStyle(host).borderColor is "rgb(0, 0, 0)"
PASS hostRule.cssRules.length is 0
PASS hostRule.type is 1001
After inserting a border rule with an id selector into @host @-rules:
PASS getComputedStyle(host).borderColor is "rgb(0, 128, 0)"
PASS hostRule.cssRules.length is 1
PASS hostRule.cssText is "@host { \n  #host { border-color: green; }\n}"
PASS hostRule.cssRules[0].cssText is "#host { border-color: green; }"
After inserting a border rule with a tag selector into @host @-rules:
PASS getComputedStyle(host).borderColor is "rgb(0, 128, 0)"
PASS hostRule.cssRules.length is 2
PASS hostRule.cssText is "@host { \n  #host { border-color: green; }\n  div { border-color: blue; }\n}"
PASS hostRule.cssRules[0].cssText is "#host { border-color: green; }"
PASS hostRule.cssRules[1].cssText is "div { border-color: blue; }"
After deleting the border rule with an id selector from @host @-rules:
PASS getComputedStyle(host).borderColor is "rgb(0, 0, 255)"
PASS hostRule.cssRules.length is 1
PASS hostRule.cssText is "@host { \n  div { border-color: blue; }\n}"
PASS hostRule.cssRules[0].cssText is "div { border-color: blue; }"
PASS successfullyParsed is true

TEST COMPLETE