64 lines
5.3 KiB
Go
64 lines
5.3 KiB
Go
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package command_test
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import (
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"testing"
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"git.netflux.io/rob/solar-toolkit/command"
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"github.com/stretchr/testify/require"
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)
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func TestModbusValidateResponse(t *testing.T) {
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validResponse := []byte{170, 85, 247, 3, 250, 22, 7, 15, 17, 46, 24, 11, 243, 0, 83, 0, 0, 9, 243, 9, 53, 0, 41, 0, 0, 3, 198, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 2, 2, 9, 114, 0, 144, 19, 136, 0, 0, 13, 182, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 0, 1, 0, 0, 13, 182, 0, 0, 11, 153, 127, 255, 255, 255, 255, 255, 255, 255, 9, 112, 0, 5, 19, 136, 0, 1, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 2, 29, 128, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 29, 0, 2, 2, 169, 127, 255, 2, 20, 1, 0, 14, 181, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33, 0, 1, 255, 255, 0, 0, 0, 0, 0, 0, 34, 145, 0, 0, 1, 100, 0, 0, 34, 139, 0, 0, 1, 52, 1, 96, 0, 0, 0, 0, 0, 0, 0, 0, 13, 73, 0, 126, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 0, 0, 2, 8, 64, 71, 0, 3, 0, 0, 255, 255, 147, 214}
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validResponseWithExtraBytes := []byte{170, 85, 247, 3, 250, 22, 7, 15, 17, 46, 24, 11, 243, 0, 83, 0, 0, 9, 243, 9, 53, 0, 41, 0, 0, 3, 198, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 2, 2, 9, 114, 0, 144, 19, 136, 0, 0, 13, 182, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 0, 1, 0, 0, 13, 182, 0, 0, 11, 153, 127, 255, 255, 255, 255, 255, 255, 255, 9, 112, 0, 5, 19, 136, 0, 1, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 2, 29, 128, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 29, 0, 2, 2, 169, 127, 255, 2, 20, 1, 0, 14, 181, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33, 0, 1, 255, 255, 0, 0, 0, 0, 0, 0, 34, 145, 0, 0, 1, 100, 0, 0, 34, 139, 0, 0, 1, 52, 1, 96, 0, 0, 0, 0, 0, 0, 0, 0, 13, 73, 0, 126, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 0, 0, 2, 8, 64, 71, 0, 3, 0, 0, 255, 255, 147, 214, 1, 2, 3}
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invalidReadLengthResponse := []byte{170, 85, 247, 3, 250, 22, 7, 15, 17, 46, 24, 243, 0, 83, 0, 0, 9, 243, 9, 53, 0, 41, 0, 0, 3, 198, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 2, 2, 9, 114, 0, 144, 19, 136, 0, 0, 13, 182, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 0, 1, 0, 0, 13, 182, 0, 0, 11, 153, 127, 255, 255, 255, 255, 255, 255, 255, 9, 112, 0, 5, 19, 136, 0, 1, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 2, 29, 128, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 29, 0, 2, 2, 169, 127, 255, 2, 20, 1, 0, 14, 181, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33, 0, 1, 255, 255, 0, 0, 0, 0, 0, 0, 34, 145, 0, 0, 1, 100, 0, 0, 34, 139, 0, 0, 1, 52, 1, 96, 0, 0, 0, 0, 0, 0, 0, 0, 13, 73, 0, 126, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 0, 0, 2, 8, 64, 71, 0, 3, 0, 0, 255, 255, 147, 213}
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invalidChecksumResponse := []byte{170, 85, 247, 3, 250, 22, 7, 15, 17, 46, 24, 11, 243, 0, 83, 0, 0, 9, 243, 9, 53, 0, 41, 0, 0, 3, 198, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 2, 2, 9, 114, 0, 144, 19, 136, 0, 0, 13, 182, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 255, 255, 255, 255, 255, 255, 127, 255, 255, 255, 0, 1, 0, 0, 13, 182, 0, 0, 11, 153, 127, 255, 255, 255, 255, 255, 255, 255, 9, 112, 0, 5, 19, 136, 0, 1, 0, 0, 0, 0, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 0, 0, 2, 29, 128, 0, 0, 0, 128, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 29, 0, 2, 2, 169, 127, 255, 2, 20, 1, 0, 14, 181, 255, 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 33, 0, 1, 255, 255, 0, 0, 0, 0, 0, 0, 34, 145, 0, 0, 1, 100, 0, 0, 34, 139, 0, 0, 1, 52, 1, 96, 0, 0, 0, 0, 0, 0, 0, 0, 13, 73, 0, 126, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 64, 0, 0, 0, 2, 8, 64, 71, 0, 3, 0, 0, 255, 255, 147, 213}
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failureCodeResponse := []byte{170, 85, 0, 0, 1, 176}
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testCases := []struct {
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name string
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resp []byte
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wantErr string
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}{
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{
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name: "empty response",
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wantErr: "invalid response: response too short",
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},
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{
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name: "invalid read length",
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resp: invalidReadLengthResponse,
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wantErr: "invalid read length: expected 257, got 256",
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},
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{
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name: "invalid checksum",
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resp: invalidChecksumResponse,
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wantErr: "invalid CRC-16: want `D693`, got `D593`",
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},
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{
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name: "failure code rcvd",
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resp: failureCodeResponse,
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wantErr: "command failed with code: 1, error: FailureCodeIllegalFunction",
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},
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{
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name: "valid response with extra bytes",
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resp: validResponseWithExtraBytes,
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},
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{
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name: "valid response",
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resp: validResponse,
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},
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}
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for _, tc := range testCases {
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t.Run(tc.name, func(t *testing.T) {
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cmd := command.NewModbus(command.ModbusCommandTypeRead, 0x891c, 0x007d)
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_, err := cmd.ValidateResponse(tc.resp)
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if tc.wantErr == "" {
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require.NoError(t, err)
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} else {
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require.EqualError(t, err, tc.wantErr)
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}
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})
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}
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}
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