Import SQLite 3.10.2.

third_party/sqlite/src/test/fkey1.test

 # 2001 September 15
 #
 # The author disclaims copyright to this source code.  In place of
 # a legal notice, here is a blessing:
 #
 #    May you do good and not evil.
 #    May you find forgiveness for yourself and forgive others.
 #    May you share freely, never taking more than you give.
 #
 #***********************************************************************
@@ skipping 103 matching lines @@
     PRAGMA foreign_key_list(t9);
   }
 } [concat                        \
   {0 0 t5 d {} {SET DEFAULT} CASCADE NONE} \
   {0 1 t5 e {} {SET DEFAULT} CASCADE NONE} \
 ]
 do_test fkey1-3.5 {
   sqlite3_db_status db DBSTATUS_DEFERRED_FKS 0
 } {0 0 0}
 
+# Stress the dequoting logic.  The first test is not so bad.
+do_execsql_test fkey1-4.0 {
+  PRAGMA foreign_keys=ON;
+  CREATE TABLE "xx1"("xx2" TEXT PRIMARY KEY, "xx3" TEXT);
+  INSERT INTO "xx1"("xx2","xx3") VALUES('abc','def');
+  CREATE TABLE "xx4"("xx5" TEXT REFERENCES "xx1" ON DELETE CASCADE);
+  INSERT INTO "xx4"("xx5") VALUES('abc');
+  INSERT INTO "xx1"("xx2","xx3") VALUES('uvw','xyz');
+  SELECT 1, "xx5" FROM "xx4";
+  DELETE FROM "xx1";
+  SELECT 2, "xx5" FROM "xx4";
+} {1 abc}
+
+# This case is identical to the previous except the "xx" in each name
+# is changed to a single escaped double-quote character.
+do_execsql_test fkey1-4.1 {
+  PRAGMA foreign_keys=ON;
+  CREATE TABLE """1"("""2" TEXT PRIMARY KEY, """3" TEXT);
+  INSERT INTO """1"("""2","""3") VALUES('abc','def');
+  CREATE TABLE """4"("""5" TEXT REFERENCES """1" ON DELETE CASCADE);
+  INSERT INTO """4"("""5") VALUES('abc');
+  INSERT INTO """1"("""2","""3") VALUES('uvw','xyz');
+  SELECT 1, """5" FROM """4";
+  DELETE FROM """1";
+  SELECT 2, """5" FROM """4";
+} {1 abc}
+do_execsql_test fkey1-4.2 {
+  PRAGMA table_info="""1";
+} {0 {"2} TEXT 0 {} 1 1 {"3} TEXT 0 {} 0}
+
+#-------------------------------------------------------------------------
+#
+do_execsql_test fkey1-5.1 {
+  CREATE TABLE t11(
+    x INTEGER PRIMARY KEY, 
+    parent REFERENCES t11 ON DELETE CASCADE
+  );
+  INSERT INTO t11 VALUES (1, NULL), (2, 1), (3, 2);
+} {}
+
+# The REPLACE part of this statement deletes the row (2, 1). Then the 
+# DELETE CASCADE caused by deleting that row removes the (3, 2) row. Which
+# would have been the parent of the new row being inserted. Causing an
+# FK violation.
+#
+do_catchsql_test fkey1-5.2 {
+  INSERT OR REPLACE INTO t11 VALUES (2, 3);
+} {1 {FOREIGN KEY constraint failed}}
+
+# A similar test to the above.
+do_execsql_test fkey1-5.3 {
+  CREATE TABLE Foo (
+    Id INTEGER PRIMARY KEY, 
+    ParentId INTEGER REFERENCES Foo(Id) ON DELETE CASCADE, C1
+  );
+  INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (1, null, 'A');
+  INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (2, 1, 'A-2-1');
+  INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (3, 2, 'A-3-2');
+  INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (4, 3, 'A-4-3');
+}
+do_catchsql_test fkey1-5.4 {
+  INSERT OR REPLACE INTO Foo(Id, ParentId, C1) VALUES (2, 3, 'A-2-3');
+} {1 {FOREIGN KEY constraint failed}}
+
 finish_test