DB/DirectDatabaseQuery: fix false negatives when cache function names are not a function call #2615
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Description
Before, the sniff was checking if the content of a
T_STRINGtoken matched one of the names of the expected cache functions without checking if it was actually a function call. This could lead to some false negatives that are addressed in this commit.As suggested by Juliette, I'm including a test to document that method names that match the cache function names are deliberately not flagged by this sniff, as they will be most likely valid custom cache functions.
Suggested changelog entry
Fixed: WordPress.DB.DirectDatabaseQuery: prevents false negatives when cache function names are not a function call.