53 lines
1.4 KiB
Go
53 lines
1.4 KiB
Go
// 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.md file.
|
|
|
|
package cmp
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
"strings"
|
|
|
|
"github.com/google/go-cmp/cmp/internal/value"
|
|
)
|
|
|
|
type defaultReporter struct {
|
|
Option
|
|
diffs []string // List of differences, possibly truncated
|
|
ndiffs int // Total number of differences
|
|
nbytes int // Number of bytes in diffs
|
|
nlines int // Number of lines in diffs
|
|
}
|
|
|
|
var _ reporter = (*defaultReporter)(nil)
|
|
|
|
func (r *defaultReporter) Report(x, y reflect.Value, eq bool, p Path) {
|
|
if eq {
|
|
return // Ignore equal results
|
|
}
|
|
const maxBytes = 4096
|
|
const maxLines = 256
|
|
r.ndiffs++
|
|
if r.nbytes < maxBytes && r.nlines < maxLines {
|
|
sx := value.Format(x, value.FormatConfig{UseStringer: true})
|
|
sy := value.Format(y, value.FormatConfig{UseStringer: true})
|
|
if sx == sy {
|
|
// Unhelpful output, so use more exact formatting.
|
|
sx = value.Format(x, value.FormatConfig{PrintPrimitiveType: true})
|
|
sy = value.Format(y, value.FormatConfig{PrintPrimitiveType: true})
|
|
}
|
|
s := fmt.Sprintf("%#v:\n\t-: %s\n\t+: %s\n", p, sx, sy)
|
|
r.diffs = append(r.diffs, s)
|
|
r.nbytes += len(s)
|
|
r.nlines += strings.Count(s, "\n")
|
|
}
|
|
}
|
|
|
|
func (r *defaultReporter) String() string {
|
|
s := strings.Join(r.diffs, "")
|
|
if r.ndiffs == len(r.diffs) {
|
|
return s
|
|
}
|
|
return fmt.Sprintf("%s... %d more differences ...", s, r.ndiffs-len(r.diffs))
|
|
}
|