test(movie): Improve file load test

internal/movie/file.go

@@ -74,7 +74,7 @@ func (m *Movie) LoadFile(path string, src io.Reader, speed float64) error {
 	bar := progressbar.New()
 	totalDuration := m.Duration()
 
-	// Build the rest of every frame and write to disk
+	// Build the rest of every frame
 	var currentPosition time.Duration
 	m.Sections = make([]int, m.Width+1)
 	for i, f := range m.Frames {

internal/movie/file_test.go

@@ -1,6 +1,7 @@
 package movie
 
 import (
+	"slices"
 	"testing"
 	"time"
 
@@ -10,7 +11,7 @@ import (
 )
 
 func TestLoadFile(t *testing.T) {
-	const TestFile = "short_intro.txt"
+	const TestFile = "sw1.txt"
 
 	f, err := movies.Movies.Open(TestFile)
 	require.NoError(t, err)
@@ -22,6 +23,18 @@ func TestLoadFile(t *testing.T) {
 	require.NoError(t, movie.LoadFile(TestFile, f, 1))
 
 	assert.Equal(t, TestFile, movie.Filename)
-	assert.EqualValues(t, 3*time.Second, movie.Duration().Truncate(time.Second))
-	assert.Len(t, movie.Frames, 45)
+	assert.EqualValues(t, 17*time.Minute+44*time.Second, movie.Duration().Truncate(time.Second))
+	assert.Len(t, movie.Frames, 3410)
+	assert.Equal(t, 67, movie.Width)
+	assert.Equal(t, 13, movie.Height)
+	assert.Len(t, movie.Sections, 68)
+	var current time.Duration
+	totalDuration := movie.Duration()
+	for i, frame := range movie.Frames {
+		current += frame.Duration
+		if sectionIdx := slices.Index(movie.Sections, i); sectionIdx != -1 {
+			timeSection := int(current * time.Duration(movie.Width) / totalDuration)
+			assert.Equal(t, sectionIdx, timeSection)
+		}
+	}
 }