package config

import "testing"

func TestParseMegabytes(t *testing.T) {
	tests := map[string]int64{
		"0.5":   512 * 1024,
		"0.5Mb": 512 * 1024,
		"1mb":   1024 * 1024,
		"1MB":   1024 * 1024,
		"1.5Mb": 1536 * 1024,
		" 2 ":   2 * 1024 * 1024,
	}

	for input, want := range tests {
		got, err := parseMegabytes(input)
		if err != nil {
			t.Fatalf("parseMegabytes(%q) returned error: %v", input, err)
		}
		if got != want {
			t.Fatalf("parseMegabytes(%q) = %d, want %d", input, got, want)
		}
	}
}

func TestParseMegabytesRejectsInvalidValues(t *testing.T) {
	tests := []string{"", "0", "-1", "abc"}

	for _, input := range tests {
		if _, err := parseMegabytes(input); err == nil {
			t.Fatalf("parseMegabytes(%q) returned nil error", input)
		}
	}
}