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integration/dhcpv4: print unified line-wise diff

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This is much more readable than the go-cmp Diff() output when dealing with
[]string lines.
This commit is contained in:
Michael Stapelberg 2018-11-18 14:29:30 +01:00
parent fac1bf231e
commit 30e9a6677b
1 changed files with 6 additions and 2 deletions
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8
integration/dhcpv4/dhcpv4_test.go
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@ -26,6 +26,7 @@ import (
"github.com/rtr7/router7/internal/dhcp4"
"github.com/rtr7/router7/internal/testing/dnsmasq"
"github.com/andreyvit/diff"
"github.com/google/go-cmp/cmp"
)
@ -165,7 +166,10 @@ func TestDHCPv4(t *testing.T) {
trimSpace := func(line string) string {
return strings.TrimSpace(line)
}
if diff := cmp.Diff(got, want, cmp.Transformer("TrimSpace", trimSpace)); diff != "" {
t.Errorf("dnsmasq log does not contain expected DHCP sequence: diff (-got +want):\n%s", diff)
if !cmp.Equal(got, want, cmp.Transformer("TrimSpace", trimSpace)) {
t.Errorf("dnsmasq log does not contain expected DHCP sequence: diff (-got +want):\n%s",
diff.LineDiff(
strings.Join(diff.TrimLines(got), "\n"),
strings.Join(diff.TrimLines(want), "\n")))
}
}