package gapr_test

import (
	"testing"

	"code.icb4dc0.de/prskr/gapr"
)

func TestKeyMappers(t *testing.T) {
	t.Parallel()
	tests := []struct {
		name   string
		mapper gapr.KeyMapper
		input  string
		want   string
	}{
		{
			name:   "Empty string",
			mapper: gapr.CamelCaseKeyMapper,
			input:  "",
			want:   "",
		},
		{
			name:   "HelloWorld camel case",
			mapper: gapr.CamelCaseKeyMapper,
			input:  "HelloWorld",
			want:   "helloWorld",
		},
		{
			name:   "helloWorld camel case",
			mapper: gapr.CamelCaseKeyMapper,
			input:  "helloWorld",
			want:   "helloWorld",
		},
		{
			name:   "h camel case",
			mapper: gapr.CamelCaseKeyMapper,
			input:  "h",
			want:   "h",
		},
		{
			name:   "HelloWorld lowercase",
			mapper: gapr.LowercaseKeyMapper,
			input:  "HelloWorld",
			want:   "helloworld",
		},
		{
			name:   "HelloWorld uppercase",
			mapper: gapr.UppercaseKeyMapper,
			input:  "HelloWorld",
			want:   "HELLOWORLD",
		},
		{
			name:   "HelloWorld pascal case",
			mapper: gapr.PascalCaseKeyMapper,
			input:  "helloWorld",
			want:   "HelloWorld",
		},
		{
			name:   "h pascal case",
			mapper: gapr.PascalCaseKeyMapper,
			input:  "h",
			want:   "H",
		},
	}
	for _, tc := range tests {
		tt := tc
		t.Run(tt.name, func(t *testing.T) {
			t.Parallel()
			if got := tt.mapper.MapKey(tt.input); got != tt.want {
				t.Errorf("Expected %s but got %s", tt.want, got)
			}
		})
	}
}