idb_binary_key_conversion.htm

   1 <!DOCTYPE html>
   2 <meta charset=utf-8>
   3 <title>Verify the coversion of various types of BufferSource</title>
   4 <link rel="author" title="Mozilla" href="https://www.mozilla.org">
   5 <link rel="help" href="http://w3c.github.io/IndexedDB/#key-construct">
   6 <script src=/resources/testharness.js></script>
   7 <script src=/resources/testharnessreport.js></script>
   8
   9 <script>
  10   test(function() {
  11     let binary = new ArrayBuffer(0);
  12     let key = IDBKeyRange.lowerBound(binary).lower;
  13
  14     assert_true(key instanceof ArrayBuffer);
  15     assert_equals(key.byteLength, 0);
  16     assert_equals(key.byteLength, binary.byteLength);
  17   }, "Empty ArrayBuffer");
  18
  19   test(function() {
  20     let binary = new ArrayBuffer(4);
  21     let dataView = new DataView(binary);
  22     dataView.setUint32(0, 1234567890);
  23
  24     let key = IDBKeyRange.lowerBound(binary).lower;
  25
  26     assert_true(key instanceof ArrayBuffer);
  27     assert_equals(key.byteLength, 4);
  28     assert_equals(dataView.getUint32(0), new DataView(key).getUint32(0));
  29   }, "ArrayBuffer");
  30
  31   test(function() {
  32     let binary = new ArrayBuffer(4);
  33     let dataView = new DataView(binary);
  34     dataView.setUint32(0, 1234567890);
  35
  36     let key = IDBKeyRange.lowerBound(dataView).lower;
  37
  38     assert_true(key instanceof ArrayBuffer);
  39     assert_equals(key.byteLength, 4);
  40     assert_equals(dataView.getUint32(0), new DataView(key).getUint32(0));
  41   }, "DataView");
  42
  43   test(function() {
  44     let binary = new ArrayBuffer(4);
  45     let dataView = new DataView(binary);
  46     let int8Array = new Int8Array(binary);
  47     int8Array.set([16, -32, 64, -128]);
  48
  49     let key = IDBKeyRange.lowerBound(int8Array).lower;
  50     let keyInInt8Array = new Int8Array(key);
  51
  52     assert_true(key instanceof ArrayBuffer);
  53     assert_equals(key.byteLength, 4);
  54     for(let i = 0; i < int8Array.length; i++) {
  55       assert_equals(keyInInt8Array[i], int8Array[i]);
  56     }
  57   }, "TypedArray(Int8Array)");
  58
  59   test(function() {
  60     let binary = new ArrayBuffer(4);
  61     let dataView = new DataView(binary);
  62     let int8Array = new Int8Array(binary);
  63     int8Array.set([16, -32, 64, -128]);
  64
  65     let key = IDBKeyRange.lowerBound([int8Array]).lower;
  66
  67     assert_true(key instanceof Array);
  68     assert_true(key[0] instanceof ArrayBuffer);
  69     assert_equals(key[0].byteLength, 4);
  70
  71     let keyInInt8Array = new Int8Array(key[0]);
  72
  73     for(let i = 0; i < int8Array.length; i++) {
  74       assert_equals(keyInInt8Array[i], int8Array[i]);
  75     }
  76   }, "Array of TypedArray(Int8Array)");
  77 </script>
  78
  79 <div id=log></div>