open-consul/agent/consul/stream/event_test.go

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package stream
import (
"testing"
"github.com/stretchr/testify/require"
)
func TestEvent_IsEndOfSnapshot(t *testing.T) {
e := Event{Payload: endOfSnapshot{}}
require.True(t, e.IsEndOfSnapshot())
t.Run("not EndOfSnapshot", func(t *testing.T) {
e := Event{Payload: newSnapshotToFollow{}}
require.False(t, e.IsEndOfSnapshot())
})
}
func newSimpleEvent(key string, index uint64) Event {
return Event{Index: index, Payload: simplePayload{key: key}}
}
func TestPayloadEvents_FilterByKey(t *testing.T) {
type testCase struct {
name string
req SubscribeRequest
events []Event
expectEvent bool
expected *PayloadEvents
expectedCap int
}
fn := func(t *testing.T, tc testCase) {
events := make([]Event, 0, 5)
events = append(events, tc.events...)
pe := &PayloadEvents{Items: events}
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ok := pe.MatchesKey(tc.req.Key, tc.req.Namespace)
require.Equal(t, tc.expectEvent, ok)
if !tc.expectEvent {
return
}
require.Equal(t, tc.expected, pe)
// test if there was a new array allocated or not
require.Equal(t, tc.expectedCap, cap(pe.Items))
}
var testCases = []testCase{
{
name: "all events match, no key or namespace",
req: SubscribeRequest{Topic: testTopic},
events: []Event{
newSimpleEvent("One", 102),
newSimpleEvent("Two", 102)},
expectEvent: true,
expected: newPayloadEvents(
newSimpleEvent("One", 102),
newSimpleEvent("Two", 102)),
expectedCap: 5,
},
{
name: "all events match, no namespace",
req: SubscribeRequest{Topic: testTopic, Key: "Same"},
events: []Event{
newSimpleEvent("Same", 103),
newSimpleEvent("Same", 103)},
expectEvent: true,
expected: newPayloadEvents(
newSimpleEvent("Same", 103),
newSimpleEvent("Same", 103)),
expectedCap: 5,
},
{
name: "all events match, no key",
req: SubscribeRequest{Topic: testTopic, Namespace: "apps"},
events: []Event{
newNSEvent("Something", "apps"),
newNSEvent("Other", "apps")},
expectEvent: true,
expected: newPayloadEvents(
newNSEvent("Something", "apps"),
newNSEvent("Other", "apps")),
expectedCap: 5,
},
{
name: "some evens match, no namespace",
req: SubscribeRequest{Topic: testTopic, Key: "Same"},
events: []Event{
newSimpleEvent("Same", 104),
newSimpleEvent("Other", 104),
newSimpleEvent("Same", 104)},
expectEvent: true,
expected: newPayloadEvents(
newSimpleEvent("Same", 104),
newSimpleEvent("Same", 104)),
expectedCap: 2,
},
{
name: "some events match, no key",
req: SubscribeRequest{Topic: testTopic, Namespace: "apps"},
events: []Event{
newNSEvent("app1", "apps"),
newNSEvent("db1", "dbs"),
newNSEvent("app2", "apps")},
expectEvent: true,
expected: newPayloadEvents(
newNSEvent("app1", "apps"),
newNSEvent("app2", "apps")),
expectedCap: 2,
},
{
name: "no events match key",
req: SubscribeRequest{Topic: testTopic, Key: "Other"},
events: []Event{
newSimpleEvent("Same", 0),
newSimpleEvent("Same", 0)},
},
{
name: "no events match namespace",
req: SubscribeRequest{Topic: testTopic, Namespace: "apps"},
events: []Event{
newNSEvent("app1", "group1"),
newNSEvent("app2", "group2")},
expectEvent: false,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
fn(t, tc)
})
}
}
func newNSEvent(key, namespace string) Event {
return Event{Index: 22, Payload: nsPayload{key: key, namespace: namespace}}
}
type nsPayload struct {
framingEvent
key string
namespace string
value string
}
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func (p nsPayload) MatchesKey(key, namespace string) bool {
return (key == "" || key == p.key) && (namespace == "" || namespace == p.namespace)
}
func TestPayloadEvents_HasReadPermission(t *testing.T) {
t.Run("some events filtered", func(t *testing.T) {
ep := newPayloadEvents(
Event{Payload: simplePayload{key: "one", noReadPerm: true}},
Event{Payload: simplePayload{key: "two", noReadPerm: false}},
Event{Payload: simplePayload{key: "three", noReadPerm: true}},
Event{Payload: simplePayload{key: "four", noReadPerm: false}})
require.True(t, ep.HasReadPermission(nil))
expected := []Event{
{Payload: simplePayload{key: "two"}},
{Payload: simplePayload{key: "four"}},
}
require.Equal(t, expected, ep.Items)
})
t.Run("all events filtered", func(t *testing.T) {
ep := newPayloadEvents(
Event{Payload: simplePayload{key: "one", noReadPerm: true}},
Event{Payload: simplePayload{key: "two", noReadPerm: true}},
Event{Payload: simplePayload{key: "three", noReadPerm: true}},
Event{Payload: simplePayload{key: "four", noReadPerm: true}})
require.False(t, ep.HasReadPermission(nil))
})
}