Feature: domain trie support wildcard alias

component/trie/domain_test.go

@@ -0,0 +1,90 @@
+package trie
+
+import (
+	"net"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+var localIP = net.IP{127, 0, 0, 1}
+
+func TestTrie_Basic(t *testing.T) {
+	tree := New()
+	domains := []string{
+		"example.com",
+		"google.com",
+	}
+
+	for _, domain := range domains {
+		tree.Insert(domain, localIP)
+	}
+
+	node := tree.Search("example.com")
+	assert.NotNil(t, node)
+	assert.True(t, node.Data.(net.IP).Equal(localIP))
+	assert.NotNil(t, tree.Insert("", localIP))
+}
+
+func TestTrie_Wildcard(t *testing.T) {
+	tree := New()
+	domains := []string{
+		"*.example.com",
+		"sub.*.example.com",
+		"*.dev",
+		".org",
+		".example.net",
+		".apple.*",
+		"+.foo.com",
+	}
+
+	for _, domain := range domains {
+		tree.Insert(domain, localIP)
+	}
+
+	assert.NotNil(t, tree.Search("sub.example.com"))
+	assert.NotNil(t, tree.Search("sub.foo.example.com"))
+	assert.NotNil(t, tree.Search("test.org"))
+	assert.NotNil(t, tree.Search("test.example.net"))
+	assert.NotNil(t, tree.Search("test.apple.com"))
+	assert.NotNil(t, tree.Search("test.foo.com"))
+	assert.NotNil(t, tree.Search("foo.com"))
+	assert.Nil(t, tree.Search("foo.sub.example.com"))
+	assert.Nil(t, tree.Search("foo.example.dev"))
+	assert.Nil(t, tree.Search("example.com"))
+}
+
+func TestTrie_Priority(t *testing.T) {
+	tree := New()
+	domains := []string{
+		".dev",
+		"example.dev",
+		"*.example.dev",
+		"test.example.dev",
+	}
+
+	assertFn := func(domain string, data int) {
+		node := tree.Search(domain)
+		assert.NotNil(t, node)
+		assert.Equal(t, data, node.Data)
+	}
+
+	for idx, domain := range domains {
+		tree.Insert(domain, idx)
+	}
+
+	assertFn("test.dev", 0)
+	assertFn("foo.bar.dev", 0)
+	assertFn("example.dev", 1)
+	assertFn("foo.example.dev", 2)
+	assertFn("test.example.dev", 3)
+}
+
+func TestTrie_Boundary(t *testing.T) {
+	tree := New()
+	tree.Insert("*.dev", localIP)
+
+	assert.NotNil(t, tree.Insert(".", localIP))
+	assert.NotNil(t, tree.Insert("..dev", localIP))
+	assert.Nil(t, tree.Search("dev"))
+}