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uuid_test.go
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uuid_test.go
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// Copyright (c) 2014 - Max Persson <max@looplab.se>
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package eventhorizon
import (
"encoding/hex"
"encoding/json"
"regexp"
. "gopkg.in/check.v1"
)
type UUIDSuite struct{}
var _ = Suite(&UUIDSuite{})
func (s *UUIDSuite) TestNewUUID(c *C) {
id := NewUUID()
c.Assert(id, NotNil)
id2 := NewUUID()
c.Assert(id, Not(Equals), id2)
// Check variant.
c.Assert((id[8]&0xC0)|0x80, Equals, uint8(0x80))
// Check version.
c.Assert(id[6]>>4, Equals, uint8(4))
// Check format.
re := regexp.MustCompile("^[a-z0-9]{8}-[a-z0-9]{4}-[1-5][a-z0-9]{3}-[a-z0-9]{4}-[a-z0-9]{12}$")
c.Assert(re.MatchString(id.String()), Equals, true)
}
func (s *UUIDSuite) TestParseUUID(c *C) {
b, err := hex.DecodeString("a4da289d466d4a5645211dbd455aa0cd")
c.Assert(err, Equals, nil)
id := UUID(b)
parsed, err := ParseUUID("a4da289d-466d-4a56-4521-1dbd455aa0cd")
c.Assert(err, Equals, nil)
c.Assert(parsed, Equals, id)
parsed, err = ParseUUID("{a4da289d-466d-4a56-4521-1dbd455aa0cd}")
c.Assert(err, Equals, nil)
c.Assert(parsed, Equals, id)
parsed, err = ParseUUID("urn:uuid:a4da289d-466d-4a56-4521-1dbd455aa0cd")
c.Assert(err, Equals, nil)
c.Assert(parsed, Equals, id)
parsed, err = ParseUUID("not-a-uuid")
c.Assert(err, Not(Equals), nil)
c.Assert(err, ErrorMatches, "Invalid UUID string")
c.Assert(parsed, Equals, UUID(""))
}
func (s *UUIDSuite) TestString(c *C) {
b, err := hex.DecodeString("a4da289d466d4a5645211dbd455aa0cd")
c.Assert(err, Equals, nil)
id := UUID(b)
c.Assert(id.String(), Equals, "a4da289d-466d-4a56-4521-1dbd455aa0cd")
}
type jsonType struct {
ID *UUID
}
func (s *UUIDSuite) TestMarshalJSON(c *C) {
id, err := ParseUUID("a4da289d-466d-4a56-4521-1dbd455aa0cd")
c.Assert(err, IsNil)
v := jsonType{ID: &id}
data, err := json.Marshal(&v)
c.Assert(err, IsNil)
c.Assert(string(data), Equals, `{"ID":"a4da289d-466d-4a56-4521-1dbd455aa0cd"}`)
}
func (s *UUIDSuite) TestUnmarshalJSON(c *C) {
data := []byte(`{"ID":"a4da289d-466d-4a56-4521-1dbd455aa0cd"}`)
v := jsonType{}
err := json.Unmarshal(data, &v)
c.Assert(err, IsNil)
id, err := ParseUUID("a4da289d-466d-4a56-4521-1dbd455aa0cd")
c.Assert(err, IsNil)
c.Assert(*v.ID, Equals, id)
}
func (s *UUIDSuite) TestUnmarshalJSONError(c *C) {
v := jsonType{}
err := json.Unmarshal([]byte(`{"ID":"not-uuid"}`), &v)
c.Assert(err, ErrorMatches, `invalid UUID in JSON, not-uuid: Invalid UUID string`)
err = json.Unmarshal([]byte(`{"ID":"819c4ff4-31b4-4519-xxxx-3c4a129b8649"}`), &v)
c.Assert(err.Error(), Equals, `invalid UUID in JSON, 819c4ff4-31b4-4519-xxxx-3c4a129b8649: encoding/hex: invalid byte: U+0078 'x'`)
}