setHtml() or setMarkdown() can result in attempting to load resources
such as images that are needed to render the page. Whenever the
resource has a relative URL, loading depends on the baseURL having
already been set so that a complete URL can be constructed.
QTextDocument::resource() is called to load images, and uses baseUrl().
A little later, QTextBrowserPrivate::resolveUrl() is given an URL that
already has been extended with the baseURL if known; but it has its own
logic to resolve the resource URL against currentURL, or else to treat
it as a local file path if a file exists at that location. The autotest
was relying on this fallback to the local relative file path before; but
now it tests both with a local filename in the current directory for the
source HTML and also with a fully resolved source URL containing the
complete file path.
Also made minor style improvements in tst_QTextBrowser's TestBrowser class.
Change-Id: I46a850015d0e9c5bc5f13b9e37179a9323ab1980
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
90243aebb6