Add tests for targetfiltersource

source/targerfiltersource_test.go

@@ -0,0 +1,140 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package source
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"golang.org/x/net/context"
+
+	"sigs.k8s.io/external-dns/endpoint"
+)
+
+func TestTargetFilterSource(t *testing.T) {
+	t.Parallel()
+
+	t.Run("Interface", TestTargetFilterSourceImplementsSource)
+	t.Run("Endpoints", TestTargetFilterSourceEndpoints)
+}
+
+// TestTargetFilterSourceImplementsSource tests that targetFilterSource is a valid Source.
+func TestTargetFilterSourceImplementsSource(t *testing.T) {
+	assert.Implements(t, (*Source)(nil), new(targetFilterSource))
+}
+
+func TestTargetFilterSourceEndpoints(t *testing.T) {
+	t.Parallel()
+
+	tests := []struct {
+		title     string
+		filters   endpoint.TargetFilterInterface
+		endpoints []*endpoint.Endpoint
+		expected  []*endpoint.Endpoint
+	}{
+		{
+			title:     "no filters",
+			filters:   endpoint.NewTargetNetFilter(nil),
+			endpoints: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.3.4")},
+			expected:  []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.3.4")},
+		},
+		{
+			title:     "filter matched specific",
+			filters:   endpoint.NewTargetNetFilter([]string{"1.2.3.4"}),
+			endpoints: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.3.4")},
+			expected:  []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.3.4")},
+		},
+		{
+			title:     "filter matched net",
+			filters:   endpoint.NewTargetNetFilter([]string{"1.2.3.0/24"}),
+			endpoints: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.3.4")},
+			expected:  []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.3.4")},
+		},
+		{
+			title:     "filter not matched specific",
+			filters:   endpoint.NewTargetNetFilter([]string{"1.2.3.5/32"}),
+			endpoints: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.3.4")},
+			expected:  []*endpoint.Endpoint{},
+		},
+		{
+			title:     "filter not matched net",
+			filters:   endpoint.NewTargetNetFilter([]string{"1.2.4.0/24"}),
+			endpoints: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.3.4")},
+			expected:  []*endpoint.Endpoint{},
+		},
+		{
+			title:     "filter not matched CNAME endpoint",
+			filters:   endpoint.NewTargetNetFilter([]string{"1.2.4.0/24"}),
+			endpoints: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "CNAME", "foo.bar")},
+			expected:  []*endpoint.Endpoint{},
+		},
+		{
+			title:   "filter matched one of two",
+			filters: endpoint.NewTargetNetFilter([]string{"1.2.4.0/24"}),
+			endpoints: []*endpoint.Endpoint{
+				endpoint.NewEndpoint("foo", "CNAME", "foo.bar"),
+				endpoint.NewEndpoint("foo", "A", "1.2.4.1")},
+			expected: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "1.2.4.1")},
+		},
+		{
+			title: "filter exclusion all",
+			filters: endpoint.NewTargetNetFilterWithExclusions(
+				[]string{""},
+				[]string{"1.0.0.0/8"}),
+			endpoints: []*endpoint.Endpoint{
+				endpoint.NewEndpoint("foo", "A", "1.2.3.4"),
+				endpoint.NewEndpoint("foo", "A", "1.2.3.5"),
+				endpoint.NewEndpoint("foo", "A", "1.2.3.6"),
+				endpoint.NewEndpoint("foo", "A", "1.3.4.5"),
+				endpoint.NewEndpoint("foo", "A", "1.4.4.5")},
+			expected: []*endpoint.Endpoint{},
+		},
+		{
+			title: "filter exclude internal net",
+			filters: endpoint.NewTargetNetFilterWithExclusions(
+				[]string{""},
+				[]string{"10.0.0.0/8"}),
+			endpoints: []*endpoint.Endpoint{
+				endpoint.NewEndpoint("foo", "A", "10.0.0.1"),
+				endpoint.NewEndpoint("foo", "A", "8.8.8.8")},
+			expected: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "8.8.8.8")},
+		},
+		{
+			title: "filter only internal",
+			filters: endpoint.NewTargetNetFilterWithExclusions(
+				[]string{"10.0.0.0/8"}, []string{}),
+			endpoints: []*endpoint.Endpoint{
+				endpoint.NewEndpoint("foo", "A", "10.0.0.1"),
+				endpoint.NewEndpoint("foo", "A", "8.8.8.8")},
+			expected: []*endpoint.Endpoint{endpoint.NewEndpoint("foo", "A", "10.0.0.1")},
+		},
+	}
+	for _, tt := range tests {
+		tt := tt
+		t.Run(tt.title, func(t *testing.T) {
+			t.Parallel()
+
+			echo := NewEchoSource(tt.endpoints)
+			src := NewTargetFilterSource(echo, tt.filters)
+
+			endpoints, err := src.Endpoints(context.Background())
+			require.NoError(t, err, "failed to get Endpoints")
+			validateEndpoints(t, endpoints, tt.expected)
+		})
+	}
+}