Test exporting datetime values as strings with sub-millisecond precision

.changeset/spotty-buckets-flash.md

@@ -0,0 +1,5 @@
+---
+'@powersync/mysql-zongji': patch
+---
+
+Add test verifying datetime fraction format.

test/settings/mysql.js

@@ -7,7 +7,7 @@ module.exports = {
     password: 'my_password',
     charset: 'utf8mb4_unicode_ci',
     port: process.env.TEST_MYSQL_PORT,
-    dateStrings: process.env.TEST_DATE_STRINGS === 'true',
+    dateStrings: true,
     database: 'zongji_test',
     timeZone: 'Z'
     // debug: true

test/types.js

@@ -68,32 +68,24 @@ function defineTypeTest(name, fields, testRows, customTest) {
           }
         };
 
-        expectEvents(
-          test,
-          eventLog,
-          [
-            expectedWrite
-          ],
-          testRows.length,
-          () => {
-            test.equal(errorLog.length, 0);
+        expectEvents(test, eventLog, [expectedWrite], testRows.length, () => {
+          test.equal(errorLog.length, 0);
 
-            const binlogRows = eventLog.reduce((prev, curr) => {
-              if (curr.getTypeName() === 'WriteRows') {
-                prev = prev.concat(curr.rows);
-              }
-              return prev;
-            }, []);
-
-            if (customTest) {
-              customTest.bind(selectResult)(test, { rows: binlogRows });
-            } else {
-              assert.deepEqual(selectResult, binlogRows);
+          const binlogRows = eventLog.reduce((prev, curr) => {
+            if (curr.getTypeName() === 'WriteRows') {
+              prev = prev.concat(curr.rows);
             }
+            return prev;
+          }, []);
 
-            test.end();
+          if (customTest) {
+            customTest.bind(selectResult)(test, { rows: binlogRows });
+          } else {
+            assert.deepEqual(selectResult, binlogRows);
           }
-        );
+
+          test.end();
+        });
       });
     });
   });
@@ -258,6 +250,21 @@ defineTypeTest(
   ]
 );
 
+defineTypeTest(
+  'time_fraction',
+  ['TIME(3) NULL', 'DATETIME(6) NULL', 'TIMESTAMP(2) NULL'],
+  [["'17:51:04.777'", "'2018-09-08 17:51:04.777'", "'2018-09-08 17:51:04.777'"]],
+  function (_, event) {
+    assert.deepEqual(event.rows, [
+      {
+        col0: '17:51:04.777',
+        col1: '2018-09-08 17:51:04.777000',
+        col2: '2018-09-08 17:51:04.78'
+      }
+    ]);
+  }
+);
+
 defineTypeTest(
   'datetime_no_fraction',
   ['DATETIME NULL'],