CREATE TABLE "wta_tour_doubles_finals_17_10_7" (
  "outcome" text,
  "date" text,
  "tournament" text,
  "surface" text,
  "partner" text,
  "opponents_in_the_final" text,
  "score" text
);

Question: Which surface had a partner of Sandrine Testud on November 14, 1999?
SQL: SELECT "surface" FROM "wta_tour_doubles_finals_17_10_7" WHERE "partner"='sandrine testud' AND "date"='november 14, 1999';