Test cases to show that CURRENT_TIMESTAMP and similar hold the same value

across a transaction.

FossilOrigin-Name: 7b2fa20e31b8a0314b9ccb97bb556898d552505dbc5943f248df3f86c0f4e008

manifest

@@ -1,5 +1,5 @@
-C Revert\sthe\sbehavior\sof\sdate/time\sfunctions\swith\sno\sarguments\sso\sthat\sthey\nonce\sagain\swork\slike\s'now',\seven\swhile\sCURRENT_TIMESTAMP\sand\ssimilar\swork\nlike\s'txn'.
-D 2023-02-08T12:01:48.294
+C Test\scases\sto\sshow\sthat\sCURRENT_TIMESTAMP\sand\ssimilar\shold\sthe\ssame\svalue\nacross\sa\stransaction.
+D 2023-02-08T12:31:47.043
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -910,7 +910,7 @@ F test/ctime.test 340f362f41f92972bbd71f44e10569a5cc694062b692231bd08aa6fe6c1c47
 F test/cursorhint.test 0175e4404181ace3ceca8b114eb0a98eae600d565aa4e2705abbe6614c7fe201
 F test/cursorhint2.test 6f3aa9cb19e7418967a10ec6905209bcbb5968054da855fc36c8beee9ae9c42f
 F test/dataversion1.test 6e5e86ac681f0782e766ebcb56c019ae001522d114e0e111e5ebf68ccf2a7bb8
-F test/date.test 0890bbd03f722169ae34f6d6f7822061d5fda8742355438562638ebed07e227c
+F test/date.test 8e9ae588d832c54fa2512b0f9789bea48442ada0736dabee54b377dc1b8d4a87
 F test/date2.test 7e12ec14aaf4d5e6294b4ba140445b0eca06ea50062a9c3a69c4ee13d0b6f8b1
 F test/date3.test a1b77abf05c6772fe5ca2337cac1398892f2a41e62bce7e6be0f4a08a0e64ae5
 F test/dbdata.test 042f49acff3438f940eeba5868d3af080ae64ddf26ae78f80c92bec3ca7d8603
@@ -2045,8 +2045,8 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 1ac78be54502779236645eac35b962797f2fb98307d059d2aa19658c4fa74cb7
-R 21bc10e166e48f106bd855a3f05d7452
+P 06180caff0f5d8aba83b9f7be682ccdd6cb2ffc228b557ee6c1fd00fe5c23e92
+R 191c2a25e4d73ba45ecc912c47f9a8ca
 U drh
-Z 81861e88fff679ab1e007b3943020398
+Z bc216ff029b87470207499db9cc62288
 # Remove this line to create a well-formed Fossil manifest.

manifest.uuid

@@ -1 +1 @@
-06180caff0f5d8aba83b9f7be682ccdd6cb2ffc228b557ee6c1fd00fe5c23e92
+7b2fa20e31b8a0314b9ccb97bb556898d552505dbc5943f248df3f86c0f4e008

test/date.test

@@ -501,7 +501,7 @@ do_test date-15.3 {
 do_test date-15.4 {
   db eval {
      SELECT a==b FROM (SELECT julianday('txn') AS a,
-                               sleeper(), julianday('txn') AS b);
+                               sleeper(), julianday('now') AS b);
   }
 } {0}
 
@@ -534,7 +534,28 @@ do_execsql_test date-15.7 {
   SELECT count(a), count(DISTINCT a) FROM t15;
 } {4 3}
 
-
+do_test date-15.10 {
+  unset -nocomplain x
+  db eval {BEGIN;}
+  db eval {
+    SELECT
+       current_time AS ct1,
+       current_date AS cd1,
+       current_timestamp AS cs1,
+       time() AS ct2,
+       datetime() AS cs2;
+    } x {continue}
+  after 1000
+  db eval {
+    SELECT
+      current_time=$x(ct1),
+      current_date=$x(cd1),
+      current_timestamp=$x(cs1),
+      time()=$x(ct2),
+      datetime()=$x(cs2);
+  }
+} {1 1 1 0 0}
+db eval {COMMIT}
 
 # Tests of extreme values in date/time functions.  Run with UBSan or the
 # equivalent to verify no signed interger overflow warnings.