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289 lines
8.5 KiB
289 lines
8.5 KiB
package storage
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import (
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"bytes"
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"math/rand"
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"strconv"
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. "gopkg.in/check.v1"
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)
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func APITestSuite(c *C, create func() Storage) {
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testCreateBucket(c, create)
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testMultipleObjectCreation(c, create)
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testPaging(c, create)
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testObjectOverwriteFails(c, create)
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testNonExistantBucketOperations(c, create)
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testBucketRecreateFails(c, create)
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testPutObjectInSubdir(c, create)
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testListBuckets(c, create)
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testListBucketsOrder(c, create)
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testListObjectsTestsForNonExistantBucket(c, create)
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testNonExistantObjectInBucket(c, create)
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testGetDirectoryReturnsObjectNotFound(c, create)
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}
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func testCreateBucket(c *C, create func() Storage) {
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// TODO
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}
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func testMultipleObjectCreation(c *C, create func() Storage) {
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objects := make(map[string][]byte)
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storage := create()
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err := storage.StoreBucket("bucket")
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c.Assert(err, IsNil)
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for i := 0; i < 10; i++ {
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randomPerm := rand.Perm(10)
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randomString := ""
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for _, num := range randomPerm {
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randomString = randomString + strconv.Itoa(num)
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}
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key := "obj" + strconv.Itoa(i)
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objects[key] = []byte(randomString)
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err := storage.StoreObject("bucket", key, bytes.NewBufferString(randomString))
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c.Assert(err, IsNil)
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}
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// ensure no duplicate etags
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etags := make(map[string]string)
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for key, value := range objects {
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var byteBuffer bytes.Buffer
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storage.CopyObjectToWriter(&byteBuffer, "bucket", key)
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c.Assert(bytes.Equal(value, byteBuffer.Bytes()), Equals, true)
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metadata, err := storage.GetObjectMetadata("bucket", key)
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c.Assert(err, IsNil)
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c.Assert(metadata.Size, Equals, int64(len(value)))
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_, ok := etags[metadata.ETag]
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c.Assert(ok, Equals, false)
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etags[metadata.ETag] = metadata.ETag
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}
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}
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func testPaging(c *C, create func() Storage) {
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storage := create()
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storage.StoreBucket("bucket")
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storage.ListObjects("bucket", "", 5)
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objects, isTruncated, err := storage.ListObjects("bucket", "", 5)
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c.Assert(len(objects), Equals, 0)
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c.Assert(isTruncated, Equals, false)
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c.Assert(err, IsNil)
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// check before paging occurs
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for i := 0; i < 5; i++ {
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key := "obj" + strconv.Itoa(i)
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storage.StoreObject("bucket", key, bytes.NewBufferString(key))
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objects, isTruncated, err = storage.ListObjects("bucket", "", 5)
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c.Assert(len(objects), Equals, i+1)
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c.Assert(isTruncated, Equals, false)
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c.Assert(err, IsNil)
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}
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// check after paging occurs pages work
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for i := 6; i <= 10; i++ {
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key := "obj" + strconv.Itoa(i)
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storage.StoreObject("bucket", key, bytes.NewBufferString(key))
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objects, isTruncated, err = storage.ListObjects("bucket", "", 5)
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c.Assert(len(objects), Equals, 5)
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c.Assert(isTruncated, Equals, true)
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c.Assert(err, IsNil)
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}
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// check paging with prefix at end returns less objects
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{
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storage.StoreObject("bucket", "newPrefix", bytes.NewBufferString("prefix1"))
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storage.StoreObject("bucket", "newPrefix2", bytes.NewBufferString("prefix2"))
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objects, isTruncated, err = storage.ListObjects("bucket", "new", 5)
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c.Assert(len(objects), Equals, 2)
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}
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// check ordering of pages
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{
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objects, isTruncated, err = storage.ListObjects("bucket", "", 5)
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c.Assert(objects[0].Key, Equals, "newPrefix")
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c.Assert(objects[1].Key, Equals, "newPrefix2")
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c.Assert(objects[2].Key, Equals, "obj0")
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c.Assert(objects[3].Key, Equals, "obj1")
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c.Assert(objects[4].Key, Equals, "obj10")
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}
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// check ordering of results with prefix
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{
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objects, isTruncated, err = storage.ListObjects("bucket", "obj", 5)
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c.Assert(objects[0].Key, Equals, "obj0")
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c.Assert(objects[1].Key, Equals, "obj1")
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c.Assert(objects[2].Key, Equals, "obj10")
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c.Assert(objects[3].Key, Equals, "obj2")
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c.Assert(objects[4].Key, Equals, "obj3")
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}
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// check ordering of results with prefix and no paging
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{
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objects, isTruncated, err = storage.ListObjects("bucket", "new", 5)
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c.Assert(objects[0].Key, Equals, "newPrefix")
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c.Assert(objects[1].Key, Equals, "newPrefix2")
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}
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}
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func testObjectOverwriteFails(c *C, create func() Storage) {
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storage := create()
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storage.StoreBucket("bucket")
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err := storage.StoreObject("bucket", "object", bytes.NewBufferString("one"))
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c.Assert(err, IsNil)
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err = storage.StoreObject("bucket", "object", bytes.NewBufferString("three"))
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c.Assert(err, Not(IsNil))
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var bytesBuffer bytes.Buffer
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length, err := storage.CopyObjectToWriter(&bytesBuffer, "bucket", "object")
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c.Assert(length, Equals, int64(len("one")))
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c.Assert(err, IsNil)
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c.Assert(string(bytesBuffer.Bytes()), Equals, "one")
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}
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func testNonExistantBucketOperations(c *C, create func() Storage) {
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storage := create()
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err := storage.StoreObject("bucket", "object", bytes.NewBufferString("one"))
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c.Assert(err, Not(IsNil))
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}
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func testBucketRecreateFails(c *C, create func() Storage) {
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storage := create()
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err := storage.StoreBucket("string")
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c.Assert(err, IsNil)
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err = storage.StoreBucket("string")
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c.Assert(err, Not(IsNil))
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}
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func testPutObjectInSubdir(c *C, create func() Storage) {
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storage := create()
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err := storage.StoreBucket("bucket")
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c.Assert(err, IsNil)
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err = storage.StoreObject("bucket", "dir1/dir2/object", bytes.NewBufferString("hello world"))
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c.Assert(err, IsNil)
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var bytesBuffer bytes.Buffer
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length, err := storage.CopyObjectToWriter(&bytesBuffer, "bucket", "dir1/dir2/object")
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c.Assert(len(bytesBuffer.Bytes()), Equals, len("hello world"))
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c.Assert(int64(len(bytesBuffer.Bytes())), Equals, length)
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c.Assert(err, IsNil)
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}
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func testListBuckets(c *C, create func() Storage) {
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storage := create()
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// test empty list
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buckets, err := storage.ListBuckets("")
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c.Assert(len(buckets), Equals, 0)
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c.Assert(err, IsNil)
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// add one and test exists
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err = storage.StoreBucket("bucket1")
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c.Assert(err, IsNil)
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buckets, err = storage.ListBuckets("")
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c.Assert(len(buckets), Equals, 1)
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c.Assert(err, IsNil)
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// add two and test exists
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err = storage.StoreBucket("bucket2")
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c.Assert(err, IsNil)
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buckets, err = storage.ListBuckets("")
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c.Assert(len(buckets), Equals, 2)
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c.Assert(err, IsNil)
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// add three and test exists + prefix
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err = storage.StoreBucket("bucket22")
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buckets, err = storage.ListBuckets("")
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c.Assert(len(buckets), Equals, 3)
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c.Assert(err, IsNil)
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buckets, err = storage.ListBuckets("bucket2")
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c.Assert(len(buckets), Equals, 2)
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c.Assert(err, IsNil)
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}
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func testListBucketsOrder(c *C, create func() Storage) {
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// if implementation contains a map, order of map keys will vary.
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// this ensures they return in the same order each time
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for i := 0; i < 10; i++ {
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storage := create()
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// add one and test exists
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storage.StoreBucket("bucket1")
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storage.StoreBucket("bucket2")
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buckets, err := storage.ListBuckets("bucket")
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c.Assert(len(buckets), Equals, 2)
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c.Assert(err, IsNil)
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c.Assert(buckets[0].Name, Equals, "bucket1")
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c.Assert(buckets[1].Name, Equals, "bucket2")
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}
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}
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func testListObjectsTestsForNonExistantBucket(c *C, create func() Storage) {
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storage := create()
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objects, isTruncated, err := storage.ListObjects("bucket", "", 1000)
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c.Assert(err, Not(IsNil))
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c.Assert(isTruncated, Equals, false)
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c.Assert(len(objects), Equals, 0)
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}
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func testNonExistantObjectInBucket(c *C, create func() Storage) {
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storage := create()
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err := storage.StoreBucket("bucket")
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c.Assert(err, IsNil)
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var byteBuffer bytes.Buffer
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length, err := storage.CopyObjectToWriter(&byteBuffer, "bucket", "dir1")
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c.Assert(length, Equals, int64(0))
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c.Assert(err, Not(IsNil))
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c.Assert(len(byteBuffer.Bytes()), Equals, 0)
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switch err := err.(type) {
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case ObjectNotFound:
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{
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c.Assert(err, ErrorMatches, "Object not Found: bucket#dir1")
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}
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default:
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{
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c.Assert(err, Equals, "fails")
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}
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}
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}
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func testGetDirectoryReturnsObjectNotFound(c *C, create func() Storage) {
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storage := create()
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err := storage.StoreBucket("bucket")
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c.Assert(err, IsNil)
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err = storage.StoreObject("bucket", "dir1/dir2/object", bytes.NewBufferString("hello world"))
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c.Assert(err, IsNil)
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var byteBuffer bytes.Buffer
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length, err := storage.CopyObjectToWriter(&byteBuffer, "bucket", "dir1")
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c.Assert(length, Equals, int64(0))
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switch err := err.(type) {
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case ObjectNotFound:
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{
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c.Assert(err.Bucket, Equals, "bucket")
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c.Assert(err.Object, Equals, "dir1")
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}
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default:
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{
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// force a failure with a line number
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c.Assert(err, Equals, "ObjectNotFound")
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}
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}
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c.Assert(len(byteBuffer.Bytes()), Equals, 0)
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var byteBuffer2 bytes.Buffer
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length, err = storage.CopyObjectToWriter(&byteBuffer, "bucket", "dir1/")
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c.Assert(length, Equals, int64(0))
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switch err := err.(type) {
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case ObjectNotFound:
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{
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c.Assert(err.Bucket, Equals, "bucket")
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c.Assert(err.Object, Equals, "dir1/")
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}
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default:
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{
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// force a failure with a line number
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c.Assert(err, Equals, "ObjectNotFound")
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}
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}
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c.Assert(len(byteBuffer2.Bytes()), Equals, 0)
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}
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