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// Copyright 2017 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.
//go:build go1.7
// +build go1.7
package godoc
import (
"bytes"
"fmt"
"testing"
)
// Verify that scanIdentifier isn't quadratic.
// This doesn't actually measure and fail on its own, but it was previously
// very obvious when running by hand.
//
// TODO: if there's a reliable and non-flaky way to test this, do so.
// Maybe count user CPU time instead of wall time? But that's not easy
// to do portably in Go.
func TestStructField(t *testing.T) {
for _, n := range []int{10, 100, 1000, 10000} {
n := n
t.Run(fmt.Sprint(n), func(t *testing.T) {
var buf bytes.Buffer
fmt.Fprintf(&buf, "package foo\n\ntype T struct {\n")
for i := 0; i < n; i++ {
fmt.Fprintf(&buf, "\t// Field%d is foo.\n\tField%d int\n\n", i, i)
}
fmt.Fprintf(&buf, "}\n")
linkifySource(t, buf.Bytes())
})
}
}
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