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moby--moby/internal/testutil/helpers.go
Daniel Nephin c9e52bd0da Post migration assertion fixes
Signed-off-by: Daniel Nephin <dnephin@docker.com>
2018-03-16 11:03:46 -04:00

33 lines
786 B
Go

package testutil // import "github.com/docker/docker/internal/testutil"
import (
"io"
"github.com/gotestyourself/gotestyourself/assert"
)
type helperT interface {
Helper()
}
// ErrorContains checks that the error is not nil, and contains the expected
// substring.
// Deprecated: use assert.Assert(t, cmp.ErrorContains(err, expected))
func ErrorContains(t assert.TestingT, err error, expectedError string, msgAndArgs ...interface{}) {
if ht, ok := t.(helperT); ok {
ht.Helper()
}
assert.ErrorContains(t, err, expectedError, msgAndArgs...)
}
// DevZero acts like /dev/zero but in an OS-independent fashion.
var DevZero io.Reader = devZero{}
type devZero struct{}
func (d devZero) Read(p []byte) (n int, err error) {
for i := range p {
p[i] = 0
}
return len(p), nil
}