package mixer_test

import (
	"math"
	"testing"

	"rhemawavetech.com/rhemawave/internal/mixer"
)

func TestConvertVolume(t *testing.T) {
	tests := []struct {
		name     string
		input    int
		expected float64
	}{
		{"0 percent", 0, 0.0},
		{"25 percent", 25, 0.25},
		{"33 percent", 33, 0.33},
		{"50 percent", 50, 0.50},
		{"90 percent", 90, 0.90},
		{"100 percent", 100, 1.0},
		{"1 percent", 1, 0.01},
		{"99 percent", 99, 0.99},
		{"negative 10", -10, -0.10},
		{"over 100", 150, 1.50},
	}

	const epsilon = 1e-9

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got := mixer.ConvertVolume(tt.input)
			if math.Abs(got-tt.expected) > epsilon {
				t.Errorf("ConvertVolume(%d) = %v, want %v", tt.input, got, tt.expected)
			}
		})
	}
}