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<meta charset="utf8">
<meta name="timeout" content="long">
<title>IndexedDB: WebAssembly module values</title>
<link rel="help" href="https://w3c.github.io/IndexedDB/">
<link rel="help" href="https://webassembly.github.io/spec/">
<link rel="author" href="pwnall@chromium.org" title="Victor Costan">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support-promises.js"></script>
<script>
'use strict';

// Binary representation for a WASM module that exports an "inc" function.
//
// This test covers storing WASM modules in IndexedDB. Its failure should only
// be debugged if WASM specification tests pass. To this end, the test does not
// use the WASM module builder helpers, trading off WASM debuggability in return
// for having the WASM wire bytes listed explicitly in the test body. Having the
// wire bytes spelled out can be helpful when debugging IndexedDB failures.
let wasm_module_bytes = new Uint8Array([
  0x00, 0x61, 0x73, 0x6d,  // Magic.
  0x01, 0x00, 0x00, 0x00,  // Version.
  0x01, 0x06, 0x01,              // Type section - 6 bytes, 1 entry
  0x60, 0x01, 0x7f, 0x01, 0x7f,  // Type 0. Function: (i32) -> (i32)
  0x03, 0x02, 0x01,   // Function section - 2 bytes, 1 entry
  0x00,               // Function 0: Type 0
  0x07, 0x07, 0x01,              // Export section - 7 bytes, 1 entry
  0x03, 0x69, 0x6e, 0x63,        // Export 1. { name: "inc"
  0x00, 0x00,                    //             desc: function 0 }
  0x0a, 0x09, 0x01,  // Code section: 9 bytes, 1 entry
  0x07, 0x00,        // Function 1: 7 code bytes, 0 locals
  0x20, 0x00,        //   getlocal 0
  0x41, 0x01,        //   i32.const 1
  0x6a,              //   i32.add
  0x0b,              //   end
]);

promise_test(async testCase => {
  const wasm_module = await WebAssembly.compile(wasm_module_bytes.buffer);

  const database = await createDatabase(testCase, (database, transaction) => {
    const store = database.createObjectStore('store');
    store.put(wasm_module, 'key1');
  });

  const result = await new Promise((resolve, reject) => {
    const transaction = database.transaction(['store'], 'readonly');
    const store = transaction.objectStore('store');
    const request = store.get('key1');
    request.onsuccess = (event) => resolve(event.target.result);
    request.onerror = (event) => reject(event.target.error);
  });

  database.close();

  const instance = await WebAssembly.instantiate(result);
  assert_equals(
      instance.exports['inc'](42), 43, 'inc should increment its argument');
}, 'WebAssembly module as an IndexedDB value');

promise_test(async testCase => {
  const wasm_module = await WebAssembly.compile(wasm_module_bytes.buffer);

  const database = await createDatabase(testCase, (database, transaction) => {
    const store = database.createObjectStore('store');
    store.put({ module: wasm_module }, 'key1');
  });

  const result = await new Promise((resolve, reject) => {
    const transaction = database.transaction(['store'], 'readonly');
    const store = transaction.objectStore('store');
    const request = store.get('key1');
    request.onsuccess = (event) => resolve(event.target.result);
    request.onerror = (event) => reject(event.target.error);
  });

  database.close();

  const instance = await WebAssembly.instantiate(result.module);
  assert_equals(
      instance.exports['inc'](42), 43, 'inc should increment its argument');
}, 'WebAssembly module in a JavaScript object IndexedDB value');

promise_test(async testCase => {
  const wasm_module = await WebAssembly.compile(wasm_module_bytes.buffer);

  const database = await createDatabase(testCase, (database, transaction) => {
    const store = database.createObjectStore('store', { keyPath: 'key' });
    store.put({ key: 'key1', module: wasm_module });
  });

  const result = await new Promise((resolve, reject) => {
    const transaction = database.transaction(['store'], 'readonly');
    const store = transaction.objectStore('store');
    const request = store.get('key1');
    request.onsuccess = (event) => resolve(event.target.result);
    request.onerror = (event) => reject(event.target.error);
  });

  database.close();

  assert_equals('key1', result.key);
  const instance = await WebAssembly.instantiate(result.module);
  assert_equals(
      instance.exports['inc'](42), 43, 'inc should increment its argument');
}, 'WebAssembly module in an IndexedDB value with an inline key');

</script>