Languages / Go / learn-go-with-tests / reflection / reflection_test.go

package main

import (
    "reflect"
    "testing"
)

func TestWalk(t *testing.T) {

    cases := []struct {
        Name          string
        Input         interface{}
        ExpectedCalls []string
    }{
        {
            "struct with one string field",
            struct { Name string }{"Chris"},
            []string{"Chris"},
        },
        {
            "struct with two string field",
            struct {
                Name string
                City string
            }{"Chris", "London"},
            []string{"Chris", "London"},
        },
        {
            "struct with non string field",
            struct {
                Name string
                Age  int
            }{"Chris", 33},
            []string{"Chris"},
        },
    }

    for _, test := range cases {
        t.Run(test.Name, func(t *testing.T) {
            var got []string

            walk(test.Input, func(input string) {
                got = append(got, input)
            })

            if !reflect.DeepEqual(got, test.ExpectedCalls) {
                t.Errorf("got %v, want %v", got, test.ExpectedCalls)
            }
        })
    }
}