Greg Pomerantz
06b1444207
The tree was formatted with an older gofmt; go1.27's gofmt additionally wants: EOF exactly one newline (no trailing blank lines), imports sorted alphabetically within a block, mixed-precedence binary expressions re-spaced for grouping ((a+b)/c), single-field composite literals un-aligned, adjacent one-line method signatures aligned, and one-line bodies containing a compound statement expanded. Applied repo-wide (31 files under internal/); pure formatting, no semantic changes — build and the full test suite pass.
123 lines
3.1 KiB
Go
123 lines
3.1 KiB
Go
package browser
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import (
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"fmt"
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"testing"
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"time"
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"pad/internal/io/pool"
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"pad/internal/io/pool/mock"
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)
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// TestLazyLoadingLargeDirectory verifies that page-based loading works
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// correctly for large directories (10,000 entries), ensuring only visible
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// and prefetched pages are kept in memory.
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func TestLazyLoadingLargeDirectory(t *testing.T) {
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state := NewBrowserState()
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state.TotalEntries = 10000
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state.EntryHeight = 48.0
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state.VisibleCount = 10
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mfs := mock.NewFileSystem()
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wp := pool.NewWorkerPool(4)
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wp.Start()
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// Populate mock filesystem with 10k entries
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mfs.AddDir("/dir", time.Now())
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for i := 0; i < 10000; i++ {
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mfs.AddFile(fmt.Sprintf("/dir/file_%d.txt", i), []byte("data"), time.Now())
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}
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bm, err := NewBrowserManager(state, wp, mfs)
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if err != nil {
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t.Fatalf("NewBrowserManager failed: %v", err)
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}
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// 1. Navigate to directory
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bm.NavigateTo("/dir")
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// Helper to get result with timeout
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getResult := func(timeout time.Duration) (pool.Result, bool) {
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select {
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case res := <-wp.ResultChan():
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return res, true
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case <-time.After(timeout):
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return pool.Result{}, false
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}
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}
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// Wait for index build result and process it
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res, ok := getResult(15 * time.Second)
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if !ok {
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t.Fatal("Timeout waiting for BuildIndex result")
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}
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bm.HandleResult(res)
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// Wait for initial page load result and process it
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res, ok = getResult(15 * time.Second)
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if !ok {
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t.Fatal("Timeout waiting for initial LoadPages result")
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}
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bm.HandleResult(res)
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// 2. Verify only initial pages loaded (visible + prefetch)
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if len(state.Pages) == 0 {
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t.Error("Expected pages to be loaded")
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}
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// 3. Scroll down to page 50
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state.ScrollOffset = 50 * 100 * state.EntryHeight // Scroll to middle
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bm.OnScroll()
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// Wait for load pages result for scroll
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res, ok = getResult(15 * time.Second)
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if !ok {
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t.Fatal("Timeout waiting for scroll LoadPages result")
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}
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bm.HandleResult(res)
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// 5. Verify old pages are evicted (e.g., page 0)
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if page, ok := state.Pages[0]; ok && page.Loaded {
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t.Error("Expected page 0 to be evicted")
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}
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}
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// TestPrefetchOnScroll verifies that scroll triggers prefetch for
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// pages within PrefetchDist.
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func TestPrefetchOnScroll(t *testing.T) {
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state := NewBrowserState()
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state.TotalEntries = 1000
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state.EntryHeight = 48.0
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state.VisibleCount = 10
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mfs := mock.NewFileSystem()
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wp := pool.NewWorkerPool(4)
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wp.Start()
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// Populate mock filesystem
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mfs.AddDir("/dir", time.Now())
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for i := 0; i < 1000; i++ {
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mfs.AddFile(fmt.Sprintf("/dir/file_%d.txt", i), []byte("data"), time.Now())
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}
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bm, err := NewBrowserManager(state, wp, mfs)
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if err != nil {
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t.Fatalf("NewBrowserManager failed: %v", err)
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}
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bm.NavigateTo("/dir")
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// Process BuildIndex and initial load
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bm.HandleResult(<-wp.ResultChan())
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bm.HandleResult(<-wp.ResultChan())
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// Current visible ~page 0. Pages 0, 1, 2 should be loaded.
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// Scroll to page 5.
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state.ScrollOffset = 5 * 100 * state.EntryHeight
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bm.OnScroll()
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// Process prefetch load
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bm.HandleResult(<-wp.ResultChan())
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// Prefetch should load pages around 5 (e.g., 3, 4, 5, 6, 7)
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if _, ok := state.Pages[6]; !ok {
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t.Error("Expected page 6 to be prefetched")
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}
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}
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