This tests ensures formatBlock removes a pre when formatting multiple paragraphs inside the pre. Formatting all paragraphs by h3 yields: | " " |
| "<#selection-anchor>hello world webkit<#selection-focus> " | " " Formatting all but the last paragraph by h3 yields: | " " ||| "<#selection-anchor>hello" | " " | "world" | " " | "<#selection-focus>webkit " | " " Undo yields: | " " |
| "<#selection-anchor>hello world <#selection-focus>webkit " | " " Formatting all but the first paragraph by h3 yields: | " " || "hello " || " " | "world" | " " | "webkit" | <#selection-caret> | " "