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Unified Diff: third_party/sqlite/sqlite-src-3170000/test/walblock.test

Issue 2747283002: [sql] Import reference version of SQLite 3.17.. (Closed)
Patch Set: Created 3 years, 9 months ago
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Index: third_party/sqlite/sqlite-src-3170000/test/walblock.test
diff --git a/third_party/sqlite/sqlite-src-3170000/test/walblock.test b/third_party/sqlite/sqlite-src-3170000/test/walblock.test
new file mode 100644
index 0000000000000000000000000000000000000000..23167a88305531c21dc67dffd7dee6bc87874c8c
--- /dev/null
+++ b/third_party/sqlite/sqlite-src-3170000/test/walblock.test
@@ -0,0 +1,114 @@
+# 2015 Mar 17
+#
+# 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.
+#
+#***********************************************************************
+#
+
+set testdir [file dirname $argv0]
+source $testdir/tester.tcl
+source $testdir/lock_common.tcl
+source $testdir/wal_common.tcl
+
+finish_test; return; # Feature currently not implemented.
+ifcapable !wal {finish_test ; return }
+if {$::tcl_platform(platform)!="unix"} { finish_test ; return }
+set testprefix walblock
+
+catch { db close }
+testvfs tvfs -fullshm 1
+foreach f [glob test.db*] { forcedelete $f }
+
+sqlite3 db test.db -vfs tvfs
+do_execsql_test 1.1.0 {
+ CREATE TABLE t1(x, y);
+ INSERT INTO t1 VALUES(1, 2);
+ INSERT INTO t1 VALUES(3, 4);
+ INSERT INTO t1 VALUES(5, 6);
+ PRAGMA journal_mode = wal;
+ INSERT INTO t1 VALUES(7, 8);
+} {wal}
+
+do_test 1.1.1 {
+ lsort [glob test.db*]
+} {test.db test.db-shm test.db-wal}
+
+do_test 1.1.2 {
+ set C [launch_testfixture]
+ testfixture $C {
+ sqlite3 db test.db
+ db eval { SELECT * FROM t1 }
+ }
+} {1 2 3 4 5 6 7 8}
+
+do_test 1.1.3 {
+ set ::out [list]
+ testfixture $C {
+ db eval { SELECT * FROM t1 }
+ } [list set ::out]
+ set ::out
+} {}
+
+do_test 1.1.4 {
+ vwait ::out
+ set ::out
+} {1 2 3 4 5 6 7 8}
+
+#
+# Test that if a read client cannot read the wal-index header because a
+# write client is in the middle of updating it, the reader blocks until
+# the writer finishes.
+#
+# 1. Open a write transaction using client [db] in this process.
+#
+# 2. Attempt to commit the write transaction. Intercept the xShmBarrier()
+# call made by the writer between updating the two copies of the
+# wal-index header.
+#
+# 3. Within the xShmBarrier() callback, make an asynchronous request to
+# the other process to read from the database. It should block, as it
+# cannot get read the wal-index header.
+#
+# 4. Still in xShmBarrier(), wait for 5 seconds. Check that the other
+# process has not answered the request.
+#
+# 5: Finish committing the transaction. Then wait for 0.5 seconds more.
+# Ensure that the second process has by this stage read the database
+# and that the snapshot it read included the transaction committed in
+# step (4).
+#
+do_execsql_test 1.2.1 {
+ BEGIN;
+ INSERT INTO t1 VALUES(9, 10);
+} {}
+
+tvfs script barrier_callback
+tvfs filter xShmBarrier
+proc barrier_callback {method args} {
+ set ::out ""
+ testfixture $::C { db eval { SELECT * FROM t1 } } {set ::out}
+
+ do_test "1.2.2.(blocking 10 seconds)" {
+ set ::continue 0
+ after 10000 {set ::continue 1}
+ vwait ::continue
+ set ::out
+ } {}
+}
+
+execsql COMMIT
+
+do_test "1.2.3.(blocking 0.5 seconds)" {
+ set ::continue 0
+ after 500 {set ::continue 1}
+ vwait ::continue
+ set ::out
+} {1 2 3 4 5 6 7 8 9 10}
+
+
+finish_test
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