Set the text string of @widget to @string if it is a GtkLabel, GtkEditable (entry and text widgets) or GtkTextView.
valid widget pointer.
a 0-terminated C string
Deprecated: This testing infrastructure is phased out in favor of reftests.
2.14
See Implementation
Set the text string of @widget to @string if it is a GtkLabel, GtkEditable (entry and text widgets) or GtkTextView.