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https://github.com/pulsar-edit/pulsar.git
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e01fe4ca90
This removes deprecation warnings on Node >=10 Co-Authored-By: Antonio Scandurra <as-cii@github.com>
106 lines
3.7 KiB
CoffeeScript
106 lines
3.7 KiB
CoffeeScript
temp = require('temp').track()
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path = require 'path'
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fs = require 'fs-plus'
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FileSystemBlobStore = require '../src/file-system-blob-store'
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describe "FileSystemBlobStore", ->
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[storageDirectory, blobStore] = []
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beforeEach ->
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storageDirectory = temp.path('atom-spec-filesystemblobstore')
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blobStore = FileSystemBlobStore.load(storageDirectory)
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afterEach ->
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fs.removeSync(storageDirectory)
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it "is empty when the file doesn't exist", ->
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expect(blobStore.get("foo")).toBeUndefined()
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expect(blobStore.get("bar")).toBeUndefined()
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it "allows to read and write buffers from/to memory without persisting them", ->
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blobStore.set("foo", Buffer.from("foo"))
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blobStore.set("bar", Buffer.from("bar"))
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expect(blobStore.get("foo")).toEqual(Buffer.from("foo"))
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expect(blobStore.get("bar")).toEqual(Buffer.from("bar"))
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expect(blobStore.get("baz")).toBeUndefined()
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expect(blobStore.get("qux")).toBeUndefined()
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it "persists buffers when saved and retrieves them on load, giving priority to in-memory ones", ->
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blobStore.set("foo", Buffer.from("foo"))
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blobStore.set("bar", Buffer.from("bar"))
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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expect(blobStore.get("foo")).toEqual(Buffer.from("foo"))
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expect(blobStore.get("bar")).toEqual(Buffer.from("bar"))
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expect(blobStore.get("baz")).toBeUndefined()
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expect(blobStore.get("qux")).toBeUndefined()
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blobStore.set("foo", Buffer.from("changed"))
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expect(blobStore.get("foo")).toEqual(Buffer.from("changed"))
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it "persists in-memory and previously stored buffers, and deletes unused keys when saved", ->
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blobStore.set("foo", Buffer.from("foo"))
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blobStore.set("bar", Buffer.from("bar"))
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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blobStore.set("bar", Buffer.from("changed"))
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blobStore.set("qux", Buffer.from("qux"))
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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expect(blobStore.get("foo")).toBeUndefined()
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expect(blobStore.get("bar")).toEqual(Buffer.from("changed"))
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expect(blobStore.get("qux")).toEqual(Buffer.from("qux"))
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it "allows to delete keys from both memory and stored buffers", ->
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blobStore.set("a", Buffer.from("a"))
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blobStore.set("b", Buffer.from("b"))
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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blobStore.get("a") # prevent the key from being deleted on save
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blobStore.set("b", Buffer.from("b"))
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blobStore.set("c", Buffer.from("c"))
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blobStore.delete("b")
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blobStore.delete("c")
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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expect(blobStore.get("a")).toEqual(Buffer.from("a"))
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expect(blobStore.get("b")).toBeUndefined()
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expect(blobStore.get("b")).toBeUndefined()
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expect(blobStore.get("c")).toBeUndefined()
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it "ignores errors when loading an invalid blob store", ->
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blobStore.set("a", Buffer.from("a"))
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blobStore.set("b", Buffer.from("b"))
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blobStore.save()
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# Simulate corruption
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fs.writeFileSync(path.join(storageDirectory, "MAP"), Buffer.from([0]))
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fs.writeFileSync(path.join(storageDirectory, "INVKEYS"), Buffer.from([0]))
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fs.writeFileSync(path.join(storageDirectory, "BLOB"), Buffer.from([0]))
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blobStore = FileSystemBlobStore.load(storageDirectory)
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expect(blobStore.get("a")).toBeUndefined()
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expect(blobStore.get("b")).toBeUndefined()
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blobStore.set("a", Buffer.from("x"))
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blobStore.set("b", Buffer.from("y"))
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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expect(blobStore.get("a")).toEqual(Buffer.from("x"))
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expect(blobStore.get("b")).toEqual(Buffer.from("y"))
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