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// Copyright 2021 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 event_test
import (
"context"
"testing"
"golang.org/x/exp/event"
"golang.org/x/exp/event/eventtest"
)
const thisImportPath = "golang.org/x/exp/event_test"
func TestNamespace(t *testing.T) {
event.RegisterHelper(testHelperB)
event.RegisterHelper(thisImportPath + ".testHelperC")
h := &eventtest.CaptureHandler{}
opt := eventtest.ExporterOptions()
opt.EnableNamespaces = true
ctx := event.WithExporter(context.Background(), event.NewExporter(h, opt))
for _, test := range []struct {
name string
do func(context.Context)
expect event.Source
}{{
name: "simple",
do: testA,
expect: event.Source{Space: thisImportPath, Name: "testA"},
}, {
name: "pointer helper",
do: testB,
expect: event.Source{Space: thisImportPath, Name: "testB"},
}, {
name: "named helper",
do: testC,
expect: event.Source{Space: thisImportPath, Name: "testC"},
}, {
name: "method",
do: testD,
expect: event.Source{Space: thisImportPath, Owner: "tester", Name: "D"},
}} {
t.Run(test.name, func(t *testing.T) {
h.Got = h.Got[:0]
test.do(ctx)
if len(h.Got) != 1 {
t.Fatalf("Expected 1 event, got %v", len(h.Got))
}
got := h.Got[0].Source
if got.Space != test.expect.Space {
t.Errorf("got namespace %q, want, %q", got.Space, test.expect.Space)
}
if got.Owner != test.expect.Owner {
t.Errorf("got owner %q, want, %q", got.Owner, test.expect.Owner)
}
if got.Name != test.expect.Name {
t.Errorf("got name %q, want, %q", got.Name, test.expect.Name)
}
})
}
}
type tester struct{}
//go:noinline
func testA(ctx context.Context) { event.Log(ctx, "test A") }
//go:noinline
func testB(ctx context.Context) { testHelperB(ctx) }
//go:noinline
func testHelperB(ctx context.Context) { event.Log(ctx, "test B") }
//go:noinline
func testC(ctx context.Context) { testHelperC(ctx) }
//go:noinline
func testHelperC(ctx context.Context) { event.Log(ctx, "test C") }
//go:noinline
func testD(ctx context.Context) { tester{}.D(ctx) }
//go:noinline
func (tester) D(ctx context.Context) { event.Log(ctx, "test D") }
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