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| (Empty) |
| 1 <!DOCTYPE html> | |
| 2 <title>StorageManager: estimate()</title> | |
| 3 <script src="../../resources/testharness.js"></script> | |
| 4 <script src="../../resources/testharnessreport.js"></script> | |
| 5 <script> | |
| 6 | |
| 7 test(function(t) { | |
| 8 assert_true('estimate' in window.navigator.storage); | |
| 9 assert_equals(typeof window.navigator.storage.estimate, 'function'); | |
| 10 assert_true(window.navigator.storage.estimate() instanceof Promise); | |
| 11 }, 'estimate() method exists and returns a Promise'); | |
| 12 | |
| 13 promise_test(function(t) { | |
| 14 return window.navigator.storage.estimate().then(function(result) { | |
| 15 assert_true(typeof result === 'object'); | |
| 16 assert_true('usage' in result); | |
| 17 assert_equals(typeof result.usage, 'number'); | |
| 18 assert_true('quota' in result); | |
| 19 assert_equals(typeof result.quota, 'number'); | |
| 20 }); | |
| 21 }, 'estimate() resolves to dictionary with members'); | |
| 22 | |
| 23 | |
| 24 // Simple Promise wrappers for IndexedDB to make async testing easier. | |
| 25 function deleteDB(name) { | |
| 26 return new Promise(function(resolve, reject) { | |
| 27 var del = indexedDB.deleteDatabase(name); | |
| 28 del.onerror = function() { reject(del.error); }; | |
| 29 del.onsuccess = function() { resolve(); }; | |
| 30 }); | |
| 31 } | |
| 32 function openDB(name, upgrade) { | |
| 33 return new Promise(function(resolve, reject) { | |
| 34 var open = indexedDB.open(name); | |
| 35 open.onerror = function() { reject(open.error); }; | |
| 36 open.onupgradeneeded = function() { upgrade(open.result); }; | |
| 37 open.onsuccess = function() { resolve(open.result); }; | |
| 38 }); | |
| 39 } | |
| 40 function transactionToPromise(tx) { | |
| 41 return new Promise(function(resolve, reject) { | |
| 42 tx.onabort = function() { reject(tx.error); }; | |
| 43 tx.oncomplete = function() { resolve(); }; | |
| 44 }); | |
| 45 } | |
| 46 | |
| 47 promise_test(function(t) { | |
| 48 var large_value = new Uint8Array(1e6); | |
| 49 var dbname = 'db' + window.location; | |
| 50 var db, before, after; | |
| 51 | |
| 52 return deleteDB(name) | |
| 53 .then(() => openDB(name, db => { db.createObjectStore('store'); })) | |
| 54 .then(connection => { | |
| 55 db = connection; | |
| 56 return navigator.storage.estimate(); | |
| 57 }) | |
| 58 .then(estimate => { | |
| 59 before = estimate.usage; | |
| 60 var tx = db.transaction('store', 'readwrite'); | |
| 61 tx.objectStore('store').put(large_value, 'k'); | |
| 62 return transactionToPromise(tx); | |
| 63 }) | |
| 64 .then(() => { | |
| 65 return navigator.storage.estimate(); | |
| 66 }) | |
| 67 .then(estimate => { | |
| 68 after = estimate.usage; | |
| 69 assert_greater_than(after, before, | |
| 70 'estimated usage should increase'); | |
| 71 // This assertion may not hold, e.g. if the implementation compresse
s | |
| 72 // the data or pre-allocate blocks larger than the value being store
d. | |
| 73 assert_greater_than_equal(after - before, large_value.length, | |
| 74 'increase should be at least as large as value stored'); | |
| 75 | |
| 76 db.close(); | |
| 77 return deleteDB(name); | |
| 78 }); | |
| 79 }, 'estimate() shows usage increase after large value is stored'); | |
| 80 | |
| 81 </script> | |
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Chromium Code Reviews
Issue 2791963004:
Upstream StorageManager estimate() test to WPT (Closed)
