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third_party/sqlite/src/test/bigrow.test

Index: third_party/sqlite/src/test/bigrow.test
diff --git a/third_party/sqlite/src/test/bigrow.test b/third_party/sqlite/src/test/bigrow.test
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+# 2001 September 23
+#
+# 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.  The
+# focus of this file is stressing the library by putting large amounts
+# of data in a single row of a table.
+#
+# $Id: bigrow.test,v 1.5 2004/08/07 23:54:48 drh Exp $
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+
+# Make a big string that we can use for test data
+#
+do_test bigrow-1.0 {
+  set ::bigstr {}
+  for {set i 1} {$i<=9999} {incr i} {
+    set sep [string index "abcdefghijklmnopqrstuvwxyz" [expr {$i%26}]]
+    append ::bigstr "$sep [format %04d $i] "
+  }
+  string length $::bigstr
+} {69993}
+
+# Make a table into which we can insert some but records.
+#
+do_test bigrow-1.1 {
+  execsql {
+    CREATE TABLE t1(a text, b text, c text);
+    SELECT name FROM sqlite_master
+      WHERE type='table' OR type='index'
+      ORDER BY name
+  }
+} {t1}
+
+do_test bigrow-1.2 {
+  set ::big1 [string range $::bigstr 0 65519]
+  set sql "INSERT INTO t1 VALUES('abc',"
+  append sql "'$::big1', 'xyz');"
+  execsql $sql
+  execsql {SELECT a, c FROM t1}
+} {abc xyz}
+do_test bigrow-1.3 {
+  execsql {SELECT b FROM t1}
+} [list $::big1]
+do_test bigrow-1.4 {
+  set ::big2 [string range $::bigstr 0 65520]
+  set sql "INSERT INTO t1 VALUES('abc2',"
+  append sql "'$::big2', 'xyz2');"
+  set r [catch {execsql $sql} msg]
+  lappend r $msg
+} {0 {}}
+do_test bigrow-1.4.1 {
+  execsql {SELECT b FROM t1 ORDER BY c}
+} [list $::big1 $::big2]
+do_test bigrow-1.4.2 {
+  execsql {SELECT c FROM t1 ORDER BY c}
+} {xyz xyz2}
+do_test bigrow-1.4.3 {
+  execsql {DELETE FROM t1 WHERE a='abc2'}
+  execsql {SELECT c FROM t1}
+} {xyz}
+
+do_test bigrow-1.5 {
+  execsql {
+    UPDATE t1 SET a=b, b=a;
+    SELECT b,c FROM t1
+  }
+} {abc xyz}
+do_test bigrow-1.6 {
+  execsql {
+    SELECT * FROM t1
+  }
+} [list $::big1 abc xyz]
+do_test bigrow-1.7 {
+  execsql {
+    INSERT INTO t1 VALUES('1','2','3');
+    INSERT INTO t1 VALUES('A','B','C');
+    SELECT b FROM t1 WHERE a=='1';
+  }
+} {2}
+do_test bigrow-1.8 {
+  execsql "SELECT b FROM t1 WHERE a=='$::big1'"
+} {abc}
+do_test bigrow-1.9 {
+  execsql "SELECT b FROM t1 WHERE a!='$::big1' ORDER BY a"
+} {2 B}
+
+# Try doing some indexing on big columns
+#
+do_test bigrow-2.1 {
+  execsql {
+    CREATE INDEX i1 ON t1(a)
+  }
+  execsql "SELECT b FROM t1 WHERE a=='$::big1'"
+} {abc}
+do_test bigrow-2.2 {
+  execsql {
+    UPDATE t1 SET a=b, b=a
+  }
+  execsql "SELECT b FROM t1 WHERE a=='abc'"
+} [list $::big1]
+do_test bigrow-2.3 {
+  execsql {
+    UPDATE t1 SET a=b, b=a
+  }
+  execsql "SELECT b FROM t1 WHERE a=='$::big1'"
+} {abc}
+catch {unset ::bigstr}
+catch {unset ::big1}
+catch {unset ::big2}
+
+# Mosts of the tests above were created back when rows were limited in
+# size to 64K.  Now rows can be much bigger.  Test that logic.  Also
+# make sure things work correctly at the transition boundries between
+# row sizes of 256 to 257 bytes and from 65536 to 65537 bytes.
+#
+# We begin by testing the 256..257 transition.
+#
+do_test bigrow-3.1 {
+  execsql {
+    DELETE FROM t1;
+    INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi');
+  }
+  execsql {SELECT a,length(b),c FROM t1}
+} {one 30 hi}
+do_test bigrow-3.2 {
+  execsql {
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+  }
+  execsql {SELECT a,length(b),c FROM t1}
+} {one 240 hi}
+for {set i 1} {$i<10} {incr i} {
+  do_test bigrow-3.3.$i {
+    execsql "UPDATE t1 SET b=b||'$i'"
+    execsql {SELECT a,length(b),c FROM t1}
+  } "one [expr {240+$i}] hi"
+}
+
+# Now test the 65536..65537 row-size transition.
+#
+do_test bigrow-4.1 {
+  execsql {
+    DELETE FROM t1;
+    INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi');
+  }
+  execsql {SELECT a,length(b),c FROM t1}
+} {one 30 hi}
+do_test bigrow-4.2 {
+  execsql {
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+    UPDATE t1 SET b=b||b;
+  }
+  execsql {SELECT a,length(b),c FROM t1}
+} {one 122880 hi}
+do_test bigrow-4.3 {
+  execsql {
+    UPDATE t1 SET b=substr(b,1,65515)
+  }
+  execsql {SELECT a,length(b),c FROM t1}
+} {one 65515 hi}
+for {set i 1} {$i<10} {incr i} {
+  do_test bigrow-4.4.$i {
+    execsql "UPDATE t1 SET b=b||'$i'"
+    execsql {SELECT a,length(b),c FROM t1}
+  } "one [expr {65515+$i}] hi"
+}
+
+# Check to make sure the library recovers safely if a row contains
+# too much data.
+#
+do_test bigrow-5.1 {
+  execsql {
+    DELETE FROM t1;
+    INSERT INTO t1(a,b,c) VALUES('one','abcdefghijklmnopqrstuvwxyz0123','hi');
+  }
+  execsql {SELECT a,length(b),c FROM t1}
+} {one 30 hi}
+set i 1
+for {set sz 60} {$sz<1048560} {incr sz $sz} {
+  do_test bigrow-5.2.$i {
+    execsql {
+      UPDATE t1 SET b=b||b;
+      SELECT a,length(b),c FROM t1;
+    }
+  } "one $sz hi"
+  incr i
+}
+do_test bigrow-5.3 {
+  catchsql {UPDATE t1 SET b=b||b}
+} {0 {}}
+do_test bigrow-5.4 {
+  execsql {SELECT length(b) FROM t1}
+} 1966080
+do_test bigrow-5.5 {
+  catchsql {UPDATE t1 SET b=b||b}
+} {0 {}}
+do_test bigrow-5.6 {
+  execsql {SELECT length(b) FROM t1}
+} 3932160
+do_test bigrow-5.99 {
+  execsql {DROP TABLE t1}
+} {}
+
+finish_test