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Change tests to accept an "at least this many" answers semantic 

The size of answers vary based on the target platform.  Accomodate this variance.
This commit is contained in:
Sean Chittenden 2016-03-30 11:48:32 -07:00
parent 4584e70636
commit 53380f8e92
1 changed files with 22 additions and 10 deletions
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32
command/agent/dns_test.go
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@ -10,6 +10,7 @@ import (
"time"
"github.com/hashicorp/consul/consul/structs"
"github.com/hashicorp/consul/lib"
"github.com/hashicorp/consul/testutil"
"github.com/miekg/dns"
)
@ -2123,15 +2124,18 @@ func testDNS_ServiceLookup_responseLimits(t *testing.T, answerLimit int, qType u
switch idx {
case 0:
if len(in.Answer) != expectedService {
if (expectedService > 0 && len(in.Answer) != expectedService) ||
(expectedService < -1 && len(in.Answer) < lib.AbsInt(expectedService)) {
return false, fmt.Errorf("%d/%d answers received for type %v for %s", len(in.Answer), answerLimit, qType, question)
}
case 1:
if len(in.Answer) != expectedQuery {
if (expectedQuery > 0 && len(in.Answer) != expectedQuery) ||
(expectedQuery < -1 && len(in.Answer) < lib.AbsInt(expectedQuery)) {
return false, fmt.Errorf("%d/%d answers received for type %v for %s", len(in.Answer), answerLimit, qType, question)
}
case 2:
if len(in.Answer) != expectedQueryID {
if (expectedQueryID > 0 && len(in.Answer) != expectedQueryID) ||
(expectedQueryID < -1 && len(in.Answer) < lib.AbsInt(expectedQueryID)) {
return false, fmt.Errorf("%d/%d answers received for type %v for %s", len(in.Answer), answerLimit, qType, question)
}
default:
@ -2144,7 +2148,15 @@ func testDNS_ServiceLookup_responseLimits(t *testing.T, answerLimit int, qType u
func TestDNS_ServiceLookup_AnswerLimits(t *testing.T) {
// Build a matrix of config parameters (udpAnswerLimit), and the
// length of the response per query type and question.
// length of the response per query type and question. Negative
// values imply the test must return at least the abs(value) number
// of records in the answer section. This is required because, for
// example, on OS-X and Linux, the number of answers returned in a
// 512B response is different even though both platforms are x86_64
// and using the same version of Go.
//
// TODO(sean@): Why is it not identical everywhere when using the
// same compiler?
tests := []struct {
name string
udpAnswerLimit int
@ -2164,12 +2176,12 @@ func TestDNS_ServiceLookup_AnswerLimits(t *testing.T) {
{"3", 3, 3, 3, 3, 3, 3, 3, 3, 3, 3},
{"4", 4, 4, 4, 4, 4, 4, 4, 4, 4, 4},
{"5", 5, 5, 5, 5, 5, 5, 5, 5, 5, 5},
{"6", 6, 6, 6, 6, 6, 6, 5, 6, 6, 6},
{"7", 7, 7, 7, 6, 7, 7, 5, 7, 7, 6},
{"8", 8, 8, 8, 6, 8, 8, 5, 8, 8, 6},
{"9", 9, 8, 8, 6, 8, 8, 5, 8, 8, 6},
{"20", 20, 8, 8, 6, 8, 8, 5, 8, 8, 6},
{"30", 30, 8, 8, 6, 8, 8, 5, 8, 8, 6},
{"6", 6, 6, 6, 6, 6, 6, 5, 6, 6, -5},
{"7", 7, 7, 7, 6, 7, 7, 5, 7, 7, -5},
{"8", 8, 8, 8, 6, 8, 8, 5, 8, 8, -5},
{"9", 9, 8, 8, 6, 8, 8, 5, 8, 8, -5},
{"20", 20, 8, 8, 6, 8, 8, 5, 8, -5, -5},
{"30", 30, 8, 8, 6, 8, 8, 5, 8, -5, -5},
}
for _, test := range tests {
ok, err := testDNS_ServiceLookup_responseLimits(t, test.udpAnswerLimit, dns.TypeA, test.expectedAService, test.expectedAQuery, test.expectedAQueryID)