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// Copyright 2019 The Go 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 logfmt_test
import (
"strings"
"testing"
"time"
"golang.org/x/exp/event"
"golang.org/x/exp/event/adapter/logfmt"
)
func TestPrint(t *testing.T) {
var p logfmt.Printer
buf := &strings.Builder{}
// the exporter is not used, but we need it to build the events
at, _ := time.Parse(logfmt.TimeFormat, "2020/03/05 14:27:48")
for _, test := range []struct {
name string
event event.Event
expect string
}{{
name: "empty",
event: event.Event{},
expect: ``,
}, {
name: "span",
event: event.Event{ID: 34, Kind: event.StartKind},
expect: `trace=34`,
}, {
name: "parent",
event: event.Event{Parent: 14},
expect: `parent=14`,
}, {
name: "namespace",
event: event.Event{Source: event.Source{Space: "golang.org/x/exp/event"}},
expect: `in=golang.org/x/exp/event`,
}, {
name: "at",
event: event.Event{At: at},
expect: `time="2020/03/05 14:27:48"`,
}, {
name: "message",
event: event.Event{Labels: []event.Label{event.String("msg", "a message")}},
expect: `msg="a message"`,
}, {
name: "end",
event: event.Event{Kind: event.EndKind},
expect: `end`,
}, {
name: "string",
event: event.Event{
Labels: []event.Label{
event.String("v1", "text"),
event.String("v2", "text with quotes"),
event.String("empty", ""),
},
},
expect: `v1=text v2="text with quotes" empty=""`,
}, {
name: "int",
event: event.Event{
Labels: []event.Label{
event.Int64("value", 67),
},
},
expect: `value=67`,
}, {
name: "float",
event: event.Event{
Labels: []event.Label{
event.Float64("value", 263.2),
},
},
expect: `value=263.2`,
}, {
name: "bool",
event: event.Event{
Labels: []event.Label{
event.Bool("v1", true),
event.Bool("v2", false),
},
},
expect: `v1=true v2=false`,
}, {
name: "value",
event: event.Event{
Labels: []event.Label{
event.Value("v1", notString{"simple"}),
event.Value("v2", notString{"needs quoting"}),
},
},
expect: `v1=simple v2="needs quoting"`,
}, {
name: "empty label",
event: event.Event{
Labels: []event.Label{
event.Value("before", nil),
event.String("", "text"),
event.Value("after", nil),
},
},
expect: `before after`,
}, {
name: "quoted ident",
event: event.Event{
Labels: []event.Label{
event.String("name with space", "text"),
},
},
expect: `"name with space"=text`,
}, {
name: "quoting quote",
event: event.Event{Labels: []event.Label{event.String("msg", `with"middle`)}},
expect: `msg="with\"middle"`,
}, {
name: "quoting newline",
event: event.Event{Labels: []event.Label{event.String("msg", "with\nmiddle")}},
expect: `msg="with\nmiddle"`,
}, {
name: "quoting slash",
event: event.Event{Labels: []event.Label{event.String("msg", `with\middle`)}},
expect: `msg="with\\middle"`,
}, {
name: "quoting bytes",
event: event.Event{
Labels: []event.Label{
event.Bytes("value", ([]byte)(`bytes "need" quote`)),
},
},
expect: `value="bytes \"need\" quote"`,
}} {
t.Run(test.name, func(t *testing.T) {
buf.Reset()
p.Event(buf, &test.event)
got := strings.TrimSpace(buf.String())
if got != test.expect {
t.Errorf("got: \n%q\nexpect:\n%q\n", got, test.expect)
}
})
}
}
type notString struct {
value string
}
func (v notString) String() string { return v.value }
func TestPrinterFlags(t *testing.T) {
var reference logfmt.Printer
buf := &strings.Builder{}
// the exporter is not used, but we need it to build the events
for _, test := range []struct {
name string
printer logfmt.Printer
event event.Event
before string
after string
}{{
name: "quote values",
printer: logfmt.Printer{QuoteValues: true},
event: event.Event{
Labels: []event.Label{
event.String("value", "text"),
},
},
before: `value=text`,
after: `value="text"`,
}, {
name: "suppress namespace",
printer: logfmt.Printer{SuppressNamespace: true},
event: event.Event{
Source: event.Source{Space: "golang.org/x/exp/event"},
Labels: []event.Label{event.String("msg", "some text")},
},
before: `in=golang.org/x/exp/event msg="some text"`,
after: `msg="some text"`,
}} {
t.Run(test.name, func(t *testing.T) {
buf.Reset()
reference.Event(buf, &test.event)
gotBefore := strings.TrimSpace(buf.String())
buf.Reset()
test.printer.Event(buf, &test.event)
gotAfter := strings.TrimSpace(buf.String())
if gotBefore != test.before {
t.Errorf("got: \n%q\nexpect:\n%q\n", gotBefore, test.before)
}
if gotAfter != test.after {
t.Errorf("got: \n%q\nexpect:\n%q\n", gotAfter, test.after)
}
})
}
}
|
