package conf

import "testing"

func Test_trim(t *testing.T) {
	tc := []struct {
		name string
		in   string
		want string
	}{
		{
			name: "empty",
			in:   "",
			want: "",
		},
		{
			name: "spaces",
			in:   " text   ",
			want: "text",
		},
		{
			name: "tabs",
			in:   "\ttext\t",
			want: "text",
		},
		{
			name: "newline",
			in:   "text\n",
			want: "text",
		},
		{
			name: "newline",
			in:   "text\r",
			want: "text",
		},
		{
			name: "newline",
			in:   "text\r\n",
			want: "text",
		},
		{
			name: "mixed",
			in:   " \t text\n\r",
			want: "text",
		},
	}

	for _, c := range tc {
		t.Run(c.name, func(t *testing.T) {
			have := trim(c.in)
			if have != c.want {
				t.Errorf("want: %s, have: %s", have, c.want)
			}
		})
	}
}

func Test_stripComment(t *testing.T) {
	tc := []struct {
		name string
		in   string
		want string
	}{
		{
			name: "empty",
			in:   "",
			want: "",
		},
		{
			name: "comment",
			in:   "# some comment",
			want: "",
		},
		{
			name: "comment",
			in:   "#some comment",
			want: "",
		},
		{
			name: "comment",
			in:   "text#some",
			want: "text#some",
		},
		{
			name: "comment",
			in:   "text #some",
			want: "text #some",
		},
		{
			name: "comment",
			in:   " text #some ",
			want: " text #some ",
		},
	}

	for _, c := range tc {
		t.Run(c.name, func(t *testing.T) {
			have := stripComment(c.in)
			if have != c.want {
				t.Errorf("want: %s, have: %s", have, c.want)
			}
		})
	}
}

func Test_toKV(t *testing.T) {
	tc := []struct {
		name string
		in   string
		k    string
		v    string
		ok   bool
	}{
		{
			name: "empty",
			in:   "",
			k:    "",
			v:    "",
			ok:   false,
		},
		{
			name: "empty value",
			in:   "key=",
			k:    "",
			v:    "",
			ok:   false,
		},
		{
			name: "empty key",
			in:   "=value",
			k:    "",
			v:    "",
			ok:   false,
		},
		{
			name: "incorrect separator",
			in:   "key/value",
			k:    "",
			v:    "",
			ok:   false,
		},
		{
			name: "incorrect separator",
			in:   "key / value",
			k:    "",
			v:    "",
			ok:   false,
		},
		{
			name: "incorrect separator",
			in:   "key value",
			k:    "",
			v:    "",
			ok:   false,
		},
		{
			name: "no spaces",
			in:   "key=value",
			k:    "key",
			v:    "value",
			ok:   true,
		},
		{
			name: "with spaces",
			in:   "key = value",
			k:    "key",
			v:    "value",
			ok:   true,
		},

		{
			name: "with spaces",
			in:   " key = value ",
			k:    "key",
			v:    "value",
			ok:   true,
		},
		{
			name: "with tabs",
			in:   "key\t=\tvalue",
			k:    "key",
			v:    "value",
			ok:   true,
		},
		{
			name: "with spaces and tabs",
			in:   " key\t=\tvalue ",
			k:    "key",
			v:    "value",
			ok:   true,
		},
		{
			name: "more tabs",
			in:   "\tkey\t=\tvalue\t",
			k:    "key",
			v:    "value",
			ok:   true,
		},
	}

	for _, c := range tc {
		t.Run(c.name, func(t *testing.T) {
			k, v, ok := toKV(c.in, separatorKV)
			if k != c.k || v != c.v || ok != c.ok {
				t.Errorf("want: %s %s %t, have: %s %s %t", c.k, c.v, c.ok, k, v, ok)
			}
		})
	}
}