Update PRAGMA journal_mode test for Android 8.x

README.md

@@ -190,7 +190,7 @@ See the [Sample section](#sample) for a sample with a more detailed explanation.
 - iOS versions supported: 8.x / 9.x / 10.x / 11.x (see [deviations section](#deviations) below for differences in case of WKWebView)
 - FTS3, FTS4, and R-Tree are fully tested and supported for all target platforms in this version branch.
 - Default `PRAGMA journal_mode` setting (*tested*):
-  - Android pre-8.0 with builtin android.database implementation (as selected using the `androidDatabaseImplementation` option in `window.sqlitePlugin.openDatabase`): `persist`
+  - Android with builtin android.database implementation (as selected using the `androidDatabaseImplementation` option in `window.sqlitePlugin.openDatabase`): `persist` (pre-8.x) / `truncate` (Android 8+)
   - otherwise: `delete`
 - AUTO-VACUUM is not enabled by default. If no form of `VACUUM` or `PRAGMA auto_vacuum` is used then sqlite will automatically reuse deleted data space for new data but the database file will never shrink. For reference: <http://www.sqlite.org/pragma.html#pragma_auto_vacuum> and [litehelpers/Cordova-sqlite-storage#646](https://github.com/litehelpers/Cordova-sqlite-storage/issues/646)
 - In case of memory issues please use smaller transactions or use the plugin version at [litehelpers / Cordova-sqlite-evcore-extbuild-free](https://github.com/litehelpers/Cordova-sqlite-evcore-extbuild-free) (GPL or commercial license terms).

spec/www/spec/sqlite-version-test.js

@@ -127,9 +127,12 @@ var mytests = function() {
             expect(rs).toBeDefined();
             expect(rs.rows).toBeDefined();
             expect(rs.rows.length).toBe(1);
-            // TBD different for builtin android.database implementation:
-            if (!isWindows && isAndroid && isImpl2) // TBD ...
-              expect(rs.rows.item(0).journal_mode).toBe('persist');
+            // DEFAULT PRAGMA journal_mode setting is
+            // DIFFERENT for builtin android.database implementation:
+            if (!isWindows && isAndroid && isImpl2)
+              expect(rs.rows.item(0).journal_mode).toBe(
+                (/Android [2-7]/.test(navigator.userAgent)) ?
+                  'persist' : 'truncate');
             else
               expect(rs.rows.item(0).journal_mode).toBe('delete');