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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/memory-pager/test.js
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Diffstat (limited to 'node_modules/memory-pager/test.js')
-rw-r--r--node_modules/memory-pager/test.js80
1 files changed, 80 insertions, 0 deletions
diff --git a/node_modules/memory-pager/test.js b/node_modules/memory-pager/test.js
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+var tape = require('tape')
+var pager = require('./')
+
+tape('get page', function (t) {
+ var pages = pager(1024)
+
+ var page = pages.get(0)
+
+ t.same(page.offset, 0)
+ t.same(page.buffer, Buffer.alloc(1024))
+ t.end()
+})
+
+tape('get page twice', function (t) {
+ var pages = pager(1024)
+ t.same(pages.length, 0)
+
+ var page = pages.get(0)
+
+ t.same(page.offset, 0)
+ t.same(page.buffer, Buffer.alloc(1024))
+ t.same(pages.length, 1)
+
+ var other = pages.get(0)
+
+ t.same(other, page)
+ t.end()
+})
+
+tape('get no mutable page', function (t) {
+ var pages = pager(1024)
+
+ t.ok(!pages.get(141, true))
+ t.ok(pages.get(141))
+ t.ok(pages.get(141, true))
+
+ t.end()
+})
+
+tape('get far out page', function (t) {
+ var pages = pager(1024)
+
+ var page = pages.get(1000000)
+
+ t.same(page.offset, 1000000 * 1024)
+ t.same(page.buffer, Buffer.alloc(1024))
+ t.same(pages.length, 1000000 + 1)
+
+ var other = pages.get(1)
+
+ t.same(other.offset, 1024)
+ t.same(other.buffer, Buffer.alloc(1024))
+ t.same(pages.length, 1000000 + 1)
+ t.ok(other !== page)
+
+ t.end()
+})
+
+tape('updates', function (t) {
+ var pages = pager(1024)
+
+ t.same(pages.lastUpdate(), null)
+
+ var page = pages.get(10)
+
+ page.buffer[42] = 1
+ pages.updated(page)
+
+ t.same(pages.lastUpdate(), page)
+ t.same(pages.lastUpdate(), null)
+
+ page.buffer[42] = 2
+ pages.updated(page)
+ pages.updated(page)
+
+ t.same(pages.lastUpdate(), page)
+ t.same(pages.lastUpdate(), null)
+
+ t.end()
+})