Test for mychaincode.go example on Hyperledger Fabric

mychaincode_test.go

package main

import (
    "encoding/json"
    "strings"
    "testing"
    "github.com/hyperledger/fabric/core/chaincode/shim"
    "github.com/stretchr/testify/assert"
)

func Test_GetAssetInvalidID(t *testing.T) {
    // Arrange
    scc := new(SmartContract)
    stub := shim.NewMockStub("", scc)

    // Act
    res := stub.MockInvoke(
        "1",
        [][]byte{
            []byte("getAsset"),
            []byte("1")},
    )
    
    // Assert
    assert.Equal(t, shim.ERROR, int(res.Status))
}

func Test_GetAssetValidID(t *testing.T) {
    // Arrange
    scc := new(SmartContract)
    stub := shim.NewMockStub("", scc)
    asset := Asset{}
    asset.Name = "john"
    assetAsBytes, _ := json.Marshal(asset)
    stub.MockTransactionStart("CREATEASSET")
    stub.PutState("A1", assetAsBytes)

    // Act
    res := stub.MockInvoke(
        "1",
        [][]byte{
            []byte("getAsset"),
            []byte("A1")},
    )
    
    // Assert
    assert.Equal(
        t,
        strings.Contains(string(res.Payload), "\"name\":\"John\""),
        true,
    )
    assert.Equal(t, shim.OK, int(res.Status))
}