Add a test which uses SEE via the "opfs" VFS. "opfs-sahpool" is pending.

FossilOrigin-Name: 1eb5a7ea394aa5b7e8594d73ce31f4b9bef55f2fa977dc26810c0bfba1cc39f7

ext/wasm/tester1.c-pp.js

@@ -3311,6 +3311,79 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
                   "entryExists(",testDir,") should have failed");
       }
     }/*OPFS util sanity checks*/)
+//#if enable-see
+    .t({
+      name: 'OPFS with SEE encryption',
+      test: function(sqlite3){
+        const dbFile = 'file:///sqlite3-see.edb';
+        const dbCtor = sqlite3.oo1.OpfsDb;
+        //const tryKey = T.see.tryKey(dbCtor, dbFile);
+        const hexFoo = new Uint8Array([0x66,0x6f,0x6f]/*=="foo"*/);
+        let initDb = true;
+        const tryKey = function(keyKey, key, expectCount){
+          let db;
+          //console.debug('tryKey()',arguments);
+          const ctoropt = {
+            filename: dbFile,
+            flags: 'ct'
+          };
+          try {
+            if (initDb) {
+              initDb = false;
+              const opt = {
+                ...ctoropt,
+                [keyKey]: key
+              };
+              opt.filename += '?delete-before-open=1';
+              db = new dbCtor(opt);
+              db.exec([
+                "drop table if exists t;",
+                "create table t(a);"
+              ]);
+              db.close();
+              // Ensure that it's actually encrypted...
+              let err;
+              try {
+                db = new dbCtor(ctoropt);
+                T.assert(db, 'db opened') /* opening is fine, but... */;
+                const rv = db.exec({
+                  sql:"select count(*) from sqlite_schema",
+                  returnValue: 'resultRows'
+                });
+                console.warn("(should not be reached) rv =",rv);
+              } catch (e) {
+                err = e;
+              } finally {
+                db.close()
+              }
+              T.assert(err, "Expecting an exception")
+                .assert(sqlite3.capi.SQLITE_NOTADB == err.resultCode,
+                        "Expecting NOTADB");
+            }/*initDb*/
+            db = new dbCtor({
+              ...ctoropt,
+              [keyKey]: key
+            });
+            db.exec("insert into t(a) values (1),(2)");
+            T.assert(expectCount === db.selectValue('select sum(a) from t'));
+          } finally {
+            if (db) db.close();
+          }
+        };
+        tryKey('textkey', 'foo', 3);
+        T.assert( !initDb );
+        tryKey('textkey', 'foo', 6);
+        initDb = true;
+        tryKey('key', 'foo', 3);
+        T.assert( !initDb );
+        tryKey('key', hexFoo, 6);
+        initDb = true;
+        tryKey('hexkey', hexFoo, 3);
+        T.assert( !initDb );
+        tryKey('hexkey', hexFoo, 6);
+      }
+    })/*OPFS with SEE*/
+//#endif enable-see
   ;/* end OPFS tests */
 
   ////////////////////////////////////////////////////////////////////////