add GetAddressAndDialer unit test

Signed-off-by: zhangsheng02 <sheng.zhang@daocloud.io>

pkg/kubelet/util/util_unix_test.go

@@ -133,3 +133,41 @@ func TestIsUnixDomainSocket(t *testing.T) {
 		assert.Equal(t, result, test.expectSocket, "Unexpected result from IsUnixDomainSocket: %v for %s", result, test.label)
 	}
 }
+
+func TestGetAddressAndDialer(t *testing.T) {
+	tests := []struct {
+		endpoint     string
+		expectError  bool
+		expectedAddr string
+	}{
+		{
+			endpoint:     "unix:///tmp/s1.sock",
+			expectError:  false,
+			expectedAddr: "/tmp/s1.sock",
+		},
+		{
+			endpoint:     "unix:///tmp/f6.sock",
+			expectError:  false,
+			expectedAddr: "/tmp/f6.sock",
+		},
+		{
+			endpoint:    "tco:/localhost:9090",
+			expectError: true,
+		},
+		{
+			// The misspelling is intentional to make it error
+			endpoint:    "htta://free-test.com",
+			expectError: true,
+		},
+	}
+	for _, test := range tests {
+		// just test addr and err
+		addr, _, err := GetAddressAndDialer(test.endpoint)
+		if test.expectError {
+			assert.NotNil(t, err, "expected error during parsing %s", test.endpoint)
+			continue
+		}
+		assert.Nil(t, err, "expected no error during parsing %s", test.endpoint)
+		assert.Equal(t, test.expectedAddr, addr)
+	}
+}