improve performance of domain matcher

common/strmatcher/domain_matcher_test.go

@@ -0,0 +1,35 @@
+package strmatcher_test
+
+import (
+	"testing"
+
+	. "v2ray.com/core/common/strmatcher"
+)
+
+func TestDomainMatcherGroup(t *testing.T) {
+	g := new(DomainMatcherGroup)
+	g.Add("v2ray.com", 1)
+	g.Add("google.com", 2)
+	g.Add("x.a.com", 3)
+
+	testCases := []struct {
+		Domain string
+		Result uint32
+	}{
+		{
+			Domain: "x.v2ray.com",
+			Result: 1,
+		},
+		{
+			Domain: "y.com",
+			Result: 0,
+		},
+	}
+
+	for _, testCase := range testCases {
+		r := g.Match(testCase.Domain)
+		if r != testCase.Result {
+			t.Error("Failed to match domain: ", testCase.Domain, ", expect ", testCase.Result, ", but got ", r)
+		}
+	}
+}