logdog: Add bundler library.

client/internal/logdog/butler/bundler/binaryParser_test.go

Index: client/internal/logdog/butler/bundler/binaryParser_test.go
diff --git a/client/internal/logdog/butler/bundler/binaryParser_test.go b/client/internal/logdog/butler/bundler/binaryParser_test.go
new file mode 100644
index 0000000000000000000000000000000000000000..426bf3b87e06994212c5c13074dc0a1dfa43f716
--- /dev/null
+++ b/client/internal/logdog/butler/bundler/binaryParser_test.go
@@ -0,0 +1,105 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package bundler
+
+import (
+	"testing"
+	"time"
+
+	"github.com/luci/luci-go/common/logdog/protocol"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+func TestBinaryParser(t *testing.T) {
+	Convey(`A binaryParser with a threshold of 2.`, t, func() {
+		s := &parserTestStream{
+			now:         time.Date(2015, 1, 1, 0, 0, 0, 0, time.UTC),
+			prefixIndex: 1337,
+		}
+		p := &binaryParser{
+			baseParser: s.base(),
+			threshold:  2,
+		}
+		c := &constraints{
+			limit: 32,
+		}
+
+		Convey(`Loaded with data below the threshold`, func() {
+			p.Append(data(s.now, 1))
+			Convey(`Returns nil when reading data smaller than the thresold.`, func() {
+				le, err := p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, ShouldBeNil)
+			})
+
+			Convey(`Returns a LogEntry when truncating.`, func() {
+				c.truncate = true
+				le, err := p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, shouldMatchLogEntry, s.le(0, protocol.Binary{
+					Data: []byte{1},
+				}))
+
+				le, err = p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, ShouldBeNil)
+			})
+		})
+
+		Convey(`Loaded with 10 bytes of data`, func() {
+			p.Append(data(s.now, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9))
+
+			Convey(`Should yield all data with a limit of 32.`, func() {
+				le, err := p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, shouldMatchLogEntry, s.le(0, protocol.Binary{
+					Data: []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
+				}))
+
+				le, err = p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, ShouldBeNil)
+			})
+
+			Convey(`Should yield [0..5], [6..9] with a limit of 6.`, func() {
+				c.limit = 6
+				le, err := p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, shouldMatchLogEntry, s.le(0, protocol.Binary{
+					Data: []byte{0, 1, 2, 3, 4, 5},
+				}))
+
+				le, err = p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, shouldMatchLogEntry, s.le(6, protocol.Binary{
+					Offset: 6,
+					Data:   []byte{6, 7, 8, 9},
+				}))
+
+				le, err = p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, ShouldBeNil)
+			})
+		})
+
+		Convey(`Loaded with 8 bytes of data from different times.`, func() {
+			for i := 0; i < 8; i++ {
+				p.Append(data(s.now.Add(time.Duration(i)*time.Second), byte(i)))
+			}
+
+			Convey(`Ignores the time boundary and returns all 8 bytes.`, func() {
+				le, err := p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, shouldMatchLogEntry, s.le(0, protocol.Binary{
+					Data: []byte{0, 1, 2, 3, 4, 5, 6, 7},
+				}))
+
+				le, err = p.nextEntry(c)
+				So(err, ShouldBeNil)
+				So(le, ShouldBeNil)
+			})
+		})
+	})
+}