Add the "(database.)freelist_count" PRAGMA. For querying the size of the

database free-list. (CVS 4112)

FossilOrigin-Name: 1fb4251a707d0b79d250d6ea2022913b371d5f14

test/pragma2.test

@@ -0,0 +1,115 @@
+# 2002 March 6
+#
+# 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 regression tests for SQLite library.
+#
+# This file implements tests for the PRAGMA command.
+#
+# $Id: pragma2.test,v 1.1 2007/06/24 08:00:44 danielk1977 Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# Test organization:
+#
+# pragma2-1.*: Test freelist_count pragma on the main database.
+# pragma2-2.*: Test freelist_count pragma on an attached database.
+# pragma2-3.*: Test trying to write to the freelist_count is a no-op.
+#
+
+ifcapable !pragma {
+  finish_test
+  return
+}
+
+# Delete the preexisting database to avoid the special setup
+# that the "all.test" script does.
+#
+db close
+file delete test.db test.db-journal
+file delete test3.db test3.db-journal
+sqlite3 db test.db; set DB [sqlite3_connection_pointer db]
+
+do_test pragma2-1.1 {
+  execsql {
+    PRAGMA freelist_count;
+  }
+} {0}
+do_test pragma2-1.2 {
+  execsql {
+    CREATE TABLE abc(a, b, c);
+    PRAGMA freelist_count;
+  }
+} {0}
+do_test pragma2-1.3 {
+  execsql {
+    DROP TABLE abc;
+    PRAGMA freelist_count;
+  }
+} {1}
+do_test pragma2-1.4 {
+  execsql {
+    PRAGMA main.freelist_count;
+  }
+} {1}
+
+file delete -force test2.db
+file delete -force test2.db-journal
+
+do_test pragma2-2.1 {
+  execsql {
+    ATTACH 'test2.db' AS aux;
+    PRAGMA aux.freelist_count;
+  }
+} {0}
+do_test pragma2-2.2 {
+  execsql {
+    CREATE TABLE aux.abc(a, b, c);
+    PRAGMA aux.freelist_count;
+  }
+} {0}
+do_test pragma2-2.3 {
+  set ::val [string repeat 0123456789 1000]
+  execsql {
+    INSERT INTO aux.abc VALUES(1, 2, $::val);
+    PRAGMA aux.freelist_count;
+  }
+} {0}
+do_test pragma2-2.4 {
+  expr {[file size test2.db] / 1024}
+} {11}
+do_test pragma2-2.5 {
+  execsql {
+    DELETE FROM aux.abc;
+    PRAGMA aux.freelist_count;
+  }
+} {9}
+
+do_test pragma2-3.1 {
+  execsql {
+    PRAGMA aux.freelist_count;
+    PRAGMA main.freelist_count;
+    PRAGMA freelist_count;
+  }
+} {9 1 1}
+do_test pragma2-3.2 {
+  execsql {
+    PRAGMA freelist_count = 500;
+    PRAGMA freelist_count;
+  }
+} {1 1}
+do_test pragma2-3.3 {
+  execsql {
+    PRAGMA aux.freelist_count = 500;
+    PRAGMA aux.freelist_count;
+  }
+} {9 9}
+
+finish_test