package gologger

import (
	"strings"
	"testing"
	"time"
)

func TestFormat(t *testing.T) {
	tests := []struct {
		name     string
		logEvent LogEvent
		want     string
	}{
		{
			name: "Info level with format string",
			logEvent: LogEvent{
				Ts:       time.Now(),
				Category: "test_category",
				Level:    Info,
				Data:     []interface{}{"%s: %v", "key", "value"},
			},
			want: "test_category : INFO - key: value",
		},
		{
			name: "Info level with one format string",
			logEvent: LogEvent{
				Ts:       time.Now(),
				Category: "test_category",
				Level:    Info,
				Data:     []interface{}{"%s", "key"},
			},
			want: "test_category : INFO - key",
		},
		{
			name: "Error level without format string",
			logEvent: LogEvent{
				Ts:       time.Now(),
				Category: "test_category",
				Level:    Error,
				Data:     []interface{}{"error occurred", "additional info"},
			},
			want: "test_category : ERROR - error occurred additional info",
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := format(tt.logEvent); strings.Index(got, tt.want) == -1 {
				t.Errorf("format() = %v, want %v", got, tt.want)
			}
		})
	}
}