Pruebas a la PokeAPI con testify

Clase 6 de 15 • Curso de Unit Testing en Go

Contenido del curso

Requisitos para tomar el curso

1
Pruebas Unitarias en Go: Conceptos y Prácticas Esenciales
00:35 min

Introducción

Primeras pruebas con Go

Utilizando mocks

El verdadero valor de tus pruebas

Próximos pasos

15
¿Quieres más cursos de testing en Go?
02:13 min

Tomar examen

Comentarios

Andres Alfonso Puello Chavez

student•

Mi forma de probarlo sin usar los archivos .json y utilizando assert de testify

package utils

import (
	"encoding/json"
	"testing"
	"github.com/stretchr/testify/assert"
)

var (
pokemonFromApi = []byte(`{"id": 132,"name": "ditto","types": [{"slot": 1,"type": {"name": "normal"}}],"stats": [{"base_stat": 48,"stat": {"name": "hp"}},{"base_stat": 48,"stat": {"name": "attack"}},{"base_stat": 48,"stat": {"name": "defense"}},{"base_stat": 48,"stat": {"name": "special-attack"}},{"base_stat": 48,"stat": {"name": "special-defense"}},{"base_stat": 48,"stat": {"name": "speed"}}]}`)
	
pokemonResponseDTO = []byte(`{"Id":132,"Name":"Ditto","Type": "Normal","Stats":{"Hp": 48,"Attack": 48,"Defense": 48,"Speed": 48}}`)
)

func TestNewParsePokemonToDTO(t *testing.T) {
	apiPokemon := entities.PokemonApiResponse{}
	err := json.Unmarshal(pokemonFromApi, &apiPokemon)
	assert.NoError(t, err)

	parsePokemon, err := ParsePokemonToDTO(apiPokemon)
	assert.NoError(t, err)

	pokemonResponse := dto.Pokemon{}
	err = json.Unmarshal(pokemonResponseDTO, &pokemonResponse)
	assert.NoError(t, err)

	assert.Equal(t, parsePokemon, pokemonResponse)
}

María Camila Lenis Restrepo

teacher•

Genial Andrés. Es otra forma de resolverlo

Sebastian Villegas

student•

Usualmente se separa en archivos json para mayor legibilidad y no mezclar cosas.

Oscar Pinochet

student•

dos cosas las función ReadFile ahora esta en el package os y la función ya devuelve un []byte, por lo que no es necesario hacer []byte(body)

Steven Javier Arevalo Poveda

student•

{
  "Id": 1,
  "Name": "bulbasaur",
  "Type": "grass",
  "Abilities": {
    "Attack": 49,
    "Defense": 49,
    "Hp": 45,
    "Speed": 45
  }
}

Leonardo Valdivieso

student•

Para obtener la respuesta de la pokeapi, no era mejor ir a la url de la pokeapi y consultarla directamente?

María Camila Lenis Restrepo

teacher•

En este caso estamos usando mocks. Quiere decir que no dependeremos de que la pokeapi esté disponible, sino que veremos cómo el código reacciona a los escenarios que planteamos (cuando es success, cuándo no lo encuentra, etc). Por eso tenemos la respuesta ya guardada, para no llamar directamente. En otro tipo de pruebas, podría ser valioso hacerlo

Steven Javier Arevalo Poveda

student•

{
  "id": 1,
  "name": "bulbasaur",
  "types": [
    {
      "slot": 1,
      "type": {
        "name": "grass"
      }
    },
    {
      "slot": 2,
      "type": {
        "name": "poison"
      }
    }
  ],
  "stats": [
    {
      "base_stat": 45,
      "stat": {
        "name": "hp"
      }
    },
    {
      "base_stat": 49,
      "stat": {
        "name": "attack"
      }
    },
    {
      "base_stat": 49,
      "stat": {
        "name": "defense"
      }
    },
    {
      "base_stat": 65,
      "stat": {
        "name": "special-attack"
      }
    },
    {
      "base_stat": 65,
      "stat": {
        "name": "special-defense"
      }
    },
    {
      "base_stat": 45,
      "stat": {
        "name": "speed"
      }
    }
  ]
}

David Hernandez

student•

Agrego mi forma de probarlo juntando con todos los cursos para saber su opiniones si se puede ejecutar una función para no repetir el mismo codigo.

Mi archivo parser_test.go

package util

import (
	"catching-pokemons/models"
	"encoding/json"
	"io/ioutil"
	"testing"

	"github.com/stretchr/testify/assert"
)

func loadJsonToMap(pathFile string, data interface{}) error {
	body, err := ioutil.ReadFile(pathFile)
	if err != nil {
		return err
	}

	err = json.Unmarshal([]byte(body), &data)
	if err != nil {
		return err
	}

	return nil
}

func TestParsePokemon(t *testing.T) {
	var apiPokemon map[string]models.PokeApiPokemonResponse
	err := loadJsonToMap("samples/pokeapi_response.json", &apiPokemon)
	assert.NoError(t, err, "Error loading pokeapi_response file")

	var pokemon map[string]models.Pokemon
	err = loadJsonToMap("samples/api_response.json", &pokemon)
	assert.NoError(t, err, "Error loading api_response file")

	type args struct {
		apiPokemon models.PokeApiPokemonResponse
	}
	tests := []struct {
		name    string
		args    args
		want    models.Pokemon
		wantErr error
	}{
		{
			name:    "Success pikachu",
			args:    args{apiPokemon: apiPokemon["pikachu"]},
			want:    pokemon["pikachu"],
			wantErr: nil,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := ParsePokemon(tt.args.apiPokemon)
			assert.NoError(t, err, "ParsePokemon() error = %v, wantErr %v", err, tt.wantErr)
			assert.Equal(t, tt.want, got, "ParsePokemon() = %v, want %v", got, tt.want)
		})
	}
}

Mi archivo api_response.json

{
    "pikachu": {
        "Id": 25,
        "Name": "pikachu",
        "Type": "electric",
        "Abilities": {
            "Attack": 55,
            "Defense": 40,
            "Hp": 35,
            "Speed": 90
        }
    },
    "bulbasaur": {
        "Id": 1,
        "Name": "bulbasaur",
        "Type": "grass",
        "Abilities": {
            "Attack": 49,
            "Defense": 49,
            "Hp": 45,
            "Speed": 45
        }
    },
    "charmander": {
        "Id": 4,
        "Name": "charmander",
        "Type": "fire",
        "Abilities": {
            "Attack": 52,
            "Defense": 43,
            "Hp": 39,
            "Speed": 65
        }
    },
    "squirtle": {
        "Id": 7,
        "Name": "squirtle",
        "Type": "water",
        "Abilities": {
            "Attack": 48,
            "Defense": 65,
            "Hp": 44,
            "Speed": 43
        }
    }
}

Mi archvivo pokeapi_response.json

{
    "pikachu" : {
        "id": 25,
        "name": "pikachu",
        "types": [
            {
                "slot": 1,
                "type": {
                    "name": "electric"
                }
            }
        ],
        "stats": [
            {
                "base_stat": 35,
                "stat": {
                    "name": "hp"
                }
            },
            {
                "base_stat": 55,
                "stat": {
                    "name": "attack"
                }
            },
            {
                "base_stat": 40,
                "stat": {
                    "name": "defense"
                }
            },
            {
                "base_stat": 50,
                "stat": {
                    "name": "special-attack"
                }
            },
            {
                "base_stat": 50,
                "stat": {
                    "name": "special-defense"
                }
            },
            {
                "base_stat": 90,
                "stat": {
                    "name": "speed"
                }
            }
        ]
    },
    "bulbasaur": {
        "id": 1,
        "name": "bulbasaur",
        "types": [
            {
                "slot": 1,
                "type": {
                    "name": "grass"
                }
            },
            {
                "slot": 2,
                "type": {
                    "name": "poison"
                }
            }
        ],
        "stats": [
            {
                "base_stat": 45,
                "stat": {
                    "name": "hp"
                }
            },
            {
                "base_stat": 49,
                "stat": {
                    "name": "attack"
                }
            },
            {
                "base_stat": 49,
                "stat": {
                    "name": "defense"
                }
            },
            {
                "base_stat": 65,
                "stat": {
                    "name": "special-attack"
                }
            },
            {
                "base_stat": 65,
                "stat": {
                    "name": "special-defense"
                }
            },
            {
                "base_stat": 45,
                "stat": {
                    "name": "speed"
                }
            }
        ]
    },
    "charmander": {
        "id": 4,
        "name": "charmander",
        "types": [
            {
                "slot": 1,
                "type": {
                    "name": "fire"
                }
            }
        ],
        "stats": [
            {
                "base_stat": 39,
                "stat": {
                    "name": "hp"
                }
            },
            {
                "base_stat": 52,
                "stat": {
                    "name": "attack"
                }
            },
            {
                "base_stat": 43,
                "stat": {
                    "name": "defense"
                }
            },
            {
                "base_stat": 60,
                "stat": {
                    "name": "special-attack"
                }
            },
            {
                "base_stat": 50,
                "stat": {
                    "name": "special-defense"
                }
            },
            {
                "base_stat": 65,
                "stat": {
                    "name": "speed"
                }
            }
        ]
    },
    "squirtle": {
        "id": 7,
        "name": "squirtle",
        "types": [
            {
                "slot": 1,
                "type": {
                    "name": "water"
                }
            }
        ],
        "stats": [
            {
                "base_stat": 44,
                "stat": {
                    "name": "hp"
                }
            },
            {
                "base_stat": 48,
                "stat": {
                    "name": "attack"
                }
            },
            {
                "base_stat": 65,
                "stat": {
                    "name": "defense"
                }
            },
            {
                "base_stat": 50,
                "stat": {
                    "name": "special-attack"
                }
            },
            {
                "base_stat": 64,
                "stat": {
                    "name": "special-defense"
                }
            },
            {
                "base_stat": 43,
                "stat": {
                    "name": "speed"
                }
            }
        ]
    }
}

package utils

import (
	"encoding/json"
	"testing"
	"github.com/stretchr/testify/assert"
)

var (
pokemonFromApi = []byte(`{"id": 132,"name": "ditto","types": [{"slot": 1,"type": {"name": "normal"}}],"stats": [{"base_stat": 48,"stat": {"name": "hp"}},{"base_stat": 48,"stat": {"name": "attack"}},{"base_stat": 48,"stat": {"name": "defense"}},{"base_stat": 48,"stat": {"name": "special-attack"}},{"base_stat": 48,"stat": {"name": "special-defense"}},{"base_stat": 48,"stat": {"name": "speed"}}]}`)
	
pokemonResponseDTO = []byte(`{"Id":132,"Name":"Ditto","Type": "Normal","Stats":{"Hp": 48,"Attack": 48,"Defense": 48,"Speed": 48}}`)
)

func TestNewParsePokemonToDTO(t *testing.T) {
	apiPokemon := entities.PokemonApiResponse{}
	err := json.Unmarshal(pokemonFromApi, &apiPokemon)
	assert.NoError(t, err)

	parsePokemon, err := ParsePokemonToDTO(apiPokemon)
	assert.NoError(t, err)

	pokemonResponse := dto.Pokemon{}
	err = json.Unmarshal(pokemonResponseDTO, &pokemonResponse)
	assert.NoError(t, err)

	assert.Equal(t, parsePokemon, pokemonResponse)
}

{
  "id": 1,
  "name": "bulbasaur",
  "types": [
    {
      "slot": 1,
      "type": {
        "name": "grass"
      }
    },
    {
      "slot": 2,
      "type": {
        "name": "poison"
      }
    }
  ],
  "stats": [
    {
      "base_stat": 45,
      "stat": {
        "name": "hp"
      }
    },
    {
      "base_stat": 49,
      "stat": {
        "name": "attack"
      }
    },
    {
      "base_stat": 49,
      "stat": {
        "name": "defense"
      }
    },
    {
      "base_stat": 65,
      "stat": {
        "name": "special-attack"
      }
    },
    {
      "base_stat": 65,
      "stat": {
        "name": "special-defense"
      }
    },
    {
      "base_stat": 45,
      "stat": {
        "name": "speed"
      }
    }
  ]
}

package util

import (
	"catching-pokemons/models"
	"encoding/json"
	"io/ioutil"
	"testing"

	"github.com/stretchr/testify/assert"
)

func loadJsonToMap(pathFile string, data interface{}) error {
	body, err := ioutil.ReadFile(pathFile)
	if err != nil {
		return err
	}

	err = json.Unmarshal([]byte(body), &data)
	if err != nil {
		return err
	}

	return nil
}

func TestParsePokemon(t *testing.T) {
	var apiPokemon map[string]models.PokeApiPokemonResponse
	err := loadJsonToMap("samples/pokeapi_response.json", &apiPokemon)
	assert.NoError(t, err, "Error loading pokeapi_response file")

	var pokemon map[string]models.Pokemon
	err = loadJsonToMap("samples/api_response.json", &pokemon)
	assert.NoError(t, err, "Error loading api_response file")

	type args struct {
		apiPokemon models.PokeApiPokemonResponse
	}
	tests := []struct {
		name    string
		args    args
		want    models.Pokemon
		wantErr error
	}{
		{
			name:    "Success pikachu",
			args:    args{apiPokemon: apiPokemon["pikachu"]},
			want:    pokemon["pikachu"],
			wantErr: nil,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := ParsePokemon(tt.args.apiPokemon)
			assert.NoError(t, err, "ParsePokemon() error = %v, wantErr %v", err, tt.wantErr)
			assert.Equal(t, tt.want, got, "ParsePokemon() = %v, want %v", got, tt.want)
		})
	}
}

{
    "pikachu": {
        "Id": 25,
        "Name": "pikachu",
        "Type": "electric",
        "Abilities": {
            "Attack": 55,
            "Defense": 40,
            "Hp": 35,
            "Speed": 90
        }
    },
    "bulbasaur": {
        "Id": 1,
        "Name": "bulbasaur",
        "Type": "grass",
        "Abilities": {
            "Attack": 49,
            "Defense": 49,
            "Hp": 45,
            "Speed": 45
        }
    },
    "charmander": {
        "Id": 4,
        "Name": "charmander",
        "Type": "fire",
        "Abilities": {
            "Attack": 52,
            "Defense": 43,
            "Hp": 39,
            "Speed": 65
        }
    },
    "squirtle": {
        "Id": 7,
        "Name": "squirtle",
        "Type": "water",
        "Abilities": {
            "Attack": 48,
            "Defense": 65,
            "Hp": 44,
            "Speed": 43
        }
    }
}

{
    "pikachu" : {
        "id": 25,
        "name": "pikachu",
        "types": [
            {
                "slot": 1,
                "type": {
                    "name": "electric"
                }
            }
        ],
        "stats": [
            {
                "base_stat": 35,
                "stat": {
                    "name": "hp"
                }
            },
            {
                "base_stat": 55,
                "stat": {
                    "name": "attack"
                }
            },
            {
                "base_stat": 40,
                "stat": {
                    "name": "defense"
                }
            },
            {
                "base_stat": 50,
                "stat": {
                    "name": "special-attack"
                }
            },
            {
                "base_stat": 50,
                "stat": {
                    "name": "special-defense"
                }
            },
            {
                "base_stat": 90,
                "stat": {
                    "name": "speed"
                }
            }
        ]
    },
    "bulbasaur": {
        "id": 1,
        "name": "bulbasaur",
        "types": [
            {
                "slot": 1,
                "type": {
                    "name": "grass"
                }
            },
            {
                "slot": 2,
                "type": {
                    "name": "poison"
                }
            }
        ],
        "stats": [
            {
                "base_stat": 45,
                "stat": {
                    "name": "hp"
                }
            },
            {
                "base_stat": 49,
                "stat": {
                    "name": "attack"
                }
            },
            {
                "base_stat": 49,
                "stat": {
                    "name": "defense"
                }
            },
            {
                "base_stat": 65,
                "stat": {
                    "name": "special-attack"
                }
            },
            {
                "base_stat": 65,
                "stat": {
                    "name": "special-defense"
                }
            },
            {
                "base_stat": 45,
                "stat": {
                    "name": "speed"
                }
            }
        ]
    },
    "charmander": {
        "id": 4,
        "name": "charmander",
        "types": [
            {
                "slot": 1,
                "type": {
                    "name": "fire"
                }
            }
        ],
        "stats": [
            {
                "base_stat": 39,
                "stat": {
                    "name": "hp"
                }
            },
            {
                "base_stat": 52,
                "stat": {
                    "name": "attack"
                }
            },
            {
                "base_stat": 43,
                "stat": {
                    "name": "defense"
                }
            },
            {
                "base_stat": 60,
                "stat": {
                    "name": "special-attack"
                }
            },
            {
                "base_stat": 50,
                "stat": {
                    "name": "special-defense"
                }
            },
            {
                "base_stat": 65,
                "stat": {
                    "name": "speed"
                }
            }
        ]
    },
    "squirtle": {
        "id": 7,
        "name": "squirtle",
        "types": [
            {
                "slot": 1,
                "type": {
                    "name": "water"
                }
            }
        ],
        "stats": [
            {
                "base_stat": 44,
                "stat": {
                    "name": "hp"
                }
            },
            {
                "base_stat": 48,
                "stat": {
                    "name": "attack"
                }
            },
            {
                "base_stat": 65,
                "stat": {
                    "name": "defense"
                }
            },
            {
                "base_stat": 50,
                "stat": {
                    "name": "special-attack"
                }
            },
            {
                "base_stat": 64,
                "stat": {
                    "name": "special-defense"
                }
            },
            {
                "base_stat": 43,
                "stat": {
                    "name": "speed"
                }
            }
        ]
    }
}

Pruebas a la PokeAPI con testify

Requisitos para tomar el curso

Pruebas Unitarias en Go: Conceptos y Prácticas Esenciales

Introducción

Importancia del Unit Testing en Go

Proyecto del curso: atrapando pokemones

Primeras pruebas con Go

Tu primera prueba unitaria en Go: objeto T

Paquetes para realizar assertions