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0d29004723
This was unneeded because we can simply compute the cache key by concatenating the v8 version and the file's contents.
106 lines
3.6 KiB
CoffeeScript
106 lines
3.6 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", new Buffer("foo"))
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blobStore.set("bar", new Buffer("bar"))
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expect(blobStore.get("foo")).toEqual(new Buffer("foo"))
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expect(blobStore.get("bar")).toEqual(new Buffer("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", new Buffer("foo"))
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blobStore.set("bar", new Buffer("bar"))
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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expect(blobStore.get("foo")).toEqual(new Buffer("foo"))
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expect(blobStore.get("bar")).toEqual(new Buffer("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", new Buffer("changed"))
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expect(blobStore.get("foo")).toEqual(new Buffer("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", new Buffer("foo"))
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blobStore.set("bar", new Buffer("bar"))
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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blobStore.set("bar", new Buffer("changed"))
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blobStore.set("qux", new Buffer("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(new Buffer("changed"))
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expect(blobStore.get("qux")).toEqual(new Buffer("qux"))
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it "allows to delete keys from both memory and stored buffers", ->
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blobStore.set("a", new Buffer("a"))
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blobStore.set("b", new Buffer("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", new Buffer("b"))
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blobStore.set("c", new Buffer("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(new Buffer("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", new Buffer("a"))
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blobStore.set("b", new Buffer("b"))
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blobStore.save()
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# Simulate corruption
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fs.writeFileSync(path.join(storageDirectory, "MAP"), new Buffer([0]))
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fs.writeFileSync(path.join(storageDirectory, "INVKEYS"), new Buffer([0]))
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fs.writeFileSync(path.join(storageDirectory, "BLOB"), new Buffer([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", new Buffer("x"))
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blobStore.set("b", new Buffer("y"))
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blobStore.save()
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blobStore = FileSystemBlobStore.load(storageDirectory)
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expect(blobStore.get("a")).toEqual(new Buffer("x"))
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expect(blobStore.get("b")).toEqual(new Buffer("y"))
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