Test ports are covered by firewall

test/e2e/framework/firewall_util_test.go

@@ -0,0 +1,54 @@
+/*
+Copyright 2018 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 framework
+
+import "testing"
+
+func TestIsPortsSubset(t *testing.T) {
+	tc := map[string]struct {
+		required  []string
+		coverage  []string
+		expectErr bool
+	}{
+		"Single port coverage": {
+			required: []string{"tcp/50"},
+			coverage: []string{"tcp/50", "tcp/60", "tcp/70"},
+		},
+		"Port range coverage": {
+			required: []string{"tcp/50"},
+			coverage: []string{"tcp/20-30", "tcp/45-60"},
+		},
+		"Multiple Port range coverage": {
+			required: []string{"tcp/50", "tcp/29", "tcp/46"},
+			coverage: []string{"tcp/20-30", "tcp/45-60"},
+		},
+		"Not covered": {
+			required:  []string{"tcp/50"},
+			coverage:  []string{"udp/50", "tcp/49", "tcp/51-60"},
+			expectErr: true,
+		},
+	}
+
+	for name, c := range tc {
+		t.Run(name, func(t *testing.T) {
+			gotErr := isPortsSubset(c.required, c.coverage)
+			if c.expectErr != (gotErr != nil) {
+				t.Errorf("isPortsSubset(%v, %v) = %v, wanted err? %v", c.required, c.coverage, gotErr, c.expectErr)
+			}
+		})
+	}
+}