[sql] Import reference version of SQLite 3.17..

third_party/sqlite/sqlite-src-3170000/test/regexp2.test

+# 2016 February 19
+#
+# 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.
+#
+#***********************************************************************
+# 
+# This file implements tests for the REGEXP operator in ext/misc/regexp.c.
+# It focuses on the use of the sqlite3_set_auxdata()/get_auxdata() APIs.
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+set testprefix regexp2
+
+load_static_extension db regexp
+
+#-------------------------------------------------------------------------
+# Test that triggers do not become confused and use aux-data created by
+# a different trigger for a different REGEXP invocation.
+#
+do_execsql_test 1.0 {
+  CREATE TABLE t1(a, b, c);
+  CREATE TABLE x1(x, y, z);
+  CREATE TABLE x2(x, y, z);
+
+  CREATE TRIGGER tr1 AFTER INSERT ON t1 BEGIN
+    INSERT INTO x1 VALUES(
+        new.a REGEXP 'abc',
+        new.b REGEXP 'abc',
+        new.c REGEXP 'abc'
+    );
+  END;
+
+  CREATE TRIGGER tr2 AFTER INSERT ON t1 BEGIN
+    INSERT INTO x2 VALUES(
+        new.a REGEXP 'def',
+        new.b REGEXP 'def',
+        new.c REGEXP 'def'
+    );
+  END;
+
+  INSERT INTO t1 VALUES('abc', 'def', 'abc');
+  SELECT * FROM t1;
+} {abc def abc}
+
+do_execsql_test 1.1 { SELECT * FROM x1 } {1 0 1}
+do_execsql_test 1.2 { SELECT * FROM x2 } {0 1 0}
+
+#-------------------------------------------------------------------------
+# Test that if an exception is thrown several triggers deep, all aux-data
+# objects are cleaned up correctly.
+#
+proc sql_error {} {
+  error "SQL error!"
+}
+db func error sql_error
+do_execsql_test 2.0 {
+  CREATE TABLE t2(a, b);
+  CREATE TABLE t3(c, d);
+  CREATE TABLE t4(e, f);
+
+  CREATE TRIGGER t2_tr1 AFTER UPDATE ON t2 BEGIN
+    UPDATE t3 SET d = new.b WHERE c = old.a;
+  END;
+
+  CREATE TRIGGER t3_tr1 AFTER UPDATE ON t3 BEGIN
+    UPDATE t4 SET f = new.d WHERE e = old.c AND new.d REGEXP 'a.*';
+  END;
+
+  CREATE TRIGGER t4_tr1 AFTER UPDATE ON t4 BEGIN
+    SELECT CASE WHEN new.f REGEXP '.*y.*' THEN error() ELSE 1 END;
+  END;
+
+  INSERT INTO t2 VALUES(1, 'a_x_1');
+  INSERT INTO t2 VALUES(2, 'a_y_1');
+
+  INSERT INTO t3 VALUES(1, 'b1');
+  INSERT INTO t3 VALUES(2, 'b2');
+
+  INSERT INTO t4 VALUES(1, 'b1');
+  INSERT INTO t4 VALUES(2, 'b2');
+} {}
+
+do_catchsql_test 2.1 {
+  UPDATE t2 SET a=a+1 WHERE b REGEXP 'a.*' AND b REGEXP '.*1';
+} {1 {SQL error!}}
+
+# Test that the triggers used in the test above work as expected.
+#
+do_execsql_test 2.2 {
+  UPDATE t2 SET b = 'a_abc_1';
+} {}
+do_execsql_test 2.3 {
+  SELECT * FROM t2;
+  SELECT * FROM t3;
+  SELECT * FROM t4;
+} {1 a_abc_1 2 a_abc_1 1 a_abc_1 2 a_abc_1 1 a_abc_1 2 a_abc_1}
+
+#-------------------------------------------------------------------------
+# Test that trigger parameters (i.e. new.* and old.*) refs are not 
+# considered to be constant across separate invocations of the trigger.
+#
+do_execsql_test 3.0 {
+  CREATE TABLE t5(a);
+  CREATE TABLE t6(x);
+
+  CREATE TRIGGER t5tr AFTER DELETE ON t5 BEGIN
+    DELETE FROM t6 WHERE t6.x REGEXP old.a;
+  END;
+
+  INSERT INTO t5 VALUES ('^a.*'), ('^b.*'), ('^c.*');
+  INSERT INTO t6 VALUES ('eab'), ('abc'), ('bcd'), ('cde'), ('dea');
+
+  DELETE FROM t5;
+  SELECT * FROM t6;
+} {eab dea}
+
+
+finish_test