Files
sanderling/internal/runner/navigation_trace_test.go
T
pj 3cdc0a1a2a feat(runner): bound every device call and record the actions that never reached the app
observation and apply now run under a timeout, so a driver that stops answering ends the step rather than the run. an undelivered gesture and a selector that matched nothing are recorded as their own skip reasons instead of counting toward the apply-failure streak, a failed observation is counted apart from a screen with nothing on it, and the summary names both. resolveCoordinates hands a point outside the viewport to the driver rather than dropping it: only the driver knows whether it can scroll that point back into reach. exceptions and navigations are collected per step and a Scroll goes to a driver's Scroller when it has one.
2026-08-16 17:44:40 +05:30

83 lines
2.4 KiB
Go

package runner
import (
"bufio"
"context"
"encoding/json"
"os"
"path/filepath"
"testing"
"time"
"github.com/priyanshujain/sanderling/internal/driver"
mockdriver "github.com/priyanshujain/sanderling/internal/driver/mock"
"github.com/priyanshujain/sanderling/internal/trace"
)
// navigatingDriver reports one navigation per step, the way a page that submits
// a form or reloads does.
type navigatingDriver struct {
*mockdriver.Driver
url string
}
func (d *navigatingDriver) Navigations(context.Context) ([]driver.Navigation, error) {
return []driver.Navigation{{URL: d.url, UnixMillis: 1700000000000}}, nil
}
// A run whose app replaced its own document has to say so on the step it
// happened. Without it the trace shows a generator repeating one action and no
// reason for it, and an analysis cannot tell that from a seed that chose badly.
func TestRunner_TheTraceRecordsThatThePageNavigated(t *testing.T) {
state := newHarness(t)
const url = "http://127.0.0.1/index.html?"
navigating := &navigatingDriver{Driver: state.mock, url: url}
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
if _, err := Run(ctx, Options{
Duration: 100 * time.Millisecond,
IdleTimeout: 20 * time.Millisecond,
MaxSteps: 3,
Driver: navigating,
Verifier: state.verifier,
TraceWriter: state.writer,
}); err != nil {
t.Fatalf("Run: %v", err)
}
if err := state.writer.Close(); err != nil {
t.Fatalf("close trace: %v", err)
}
file, err := os.Open(filepath.Join(state.writer.Directory(), "trace.jsonl"))
if err != nil {
t.Fatal(err)
}
defer file.Close()
recorded := 0
scanner := bufio.NewScanner(file)
scanner.Buffer(make([]byte, 0, 64*1024), 8*1024*1024)
for scanner.Scan() {
var step struct {
Index int `json:"step"`
Navigations []trace.Navigation `json:"navigations"`
}
if err := json.Unmarshal(scanner.Bytes(), &step); err != nil {
t.Fatalf("trace line decode: %v", err)
}
for _, navigation := range step.Navigations {
recorded++
if navigation.URL != url {
t.Errorf("step %d records navigation to %q, want %q", step.Index, navigation.URL, url)
}
if navigation.UnixMillis == 0 {
t.Errorf("step %d records a navigation with no timestamp", step.Index)
}
}
}
if recorded == 0 {
t.Fatal("the page navigated on every step and the trace holds no record of it")
}
}