1 files changed, 100 insertions, 0 deletions
diff --git a/strava/sync_test.go b/strava/sync_test.go
new file mode 100644
index 0000000..b74d1ab
--- /dev/null
+++ b/strava/sync_test.go
@@ -0,0 +1,100 @@
+package strava
+
+import (
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"os"
+	"path/filepath"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+	"github.com/tkrajina/gpxgo/gpx"
+)
+
+func newTestClient(t *testing.T, handler http.HandlerFunc) *Client {
+	t.Helper()
+	server := httptest.NewServer(handler)
+	t.Cleanup(server.Close)
+	client := NewClient("12345", "secret", Token{
+		AccessToken:  "fresh-access",
+		RefreshToken: "refresh",
+		ExpiresAt:    time.Now().Add(time.Hour),
+	})
+	apiEndpoint = server.URL
+	return client
+}
+
+func TestListActivities(t *testing.T) {
+	calls := 0
+	client := newTestClient(t, func(w http.ResponseWriter, r *http.Request) {
+		calls++
+		require.Equal(t, "/athlete/activities", r.URL.Path)
+		q := r.URL.Query()
+		assert.Equal(t, "200", q.Get("per_page"))
+		assert.Equal(t, fmt.Sprint(calls), q.Get("page"))
+		assert.Equal(t, "1600000000", q.Get("after"))
+		w.Header().Set("Content-Type", "application/json")
+		body := `[{"id":1,"name":"Ride A","type":"Ride","sport_type":"Ride","start_date":"2026-01-01T10:00:00Z"},{"id":2,"name":"Run","type":"Run","sport_type":"Run","start_date":"2026-01-01T11:00:00Z"}]`
+		if calls == 2 {
+			body = `[]`
+		}
+		_, err := w.Write([]byte(body))
+		require.NoError(t, err)
+	})
+
+	activities, err := client.ListActivities(time.Unix(1600000000, 0), "Ride")
+	require.NoError(t, err)
+	require.Len(t, activities, 1)
+	assert.Equal(t, int64(1), activities[0].ID)
+	assert.Equal(t, "Ride A", activities[0].Name)
+	assert.Equal(t, time.Date(2026, 1, 1, 10, 0, 0, 0, time.UTC), activities[0].StartDate)
+}
+
+func TestActivityStreams(t *testing.T) {
+	client := newTestClient(t, func(w http.ResponseWriter, r *http.Request) {
+		require.Equal(t, "/activities/42/streams", r.URL.Path)
+		assert.Equal(t, "latlng,altitude,time", r.URL.Query().Get("keys"))
+		w.Header().Set("Content-Type", "application/json")
+		_, err := w.Write([]byte(`{
+			"latlng":{"type":"latlng","data":[[43.0,5.0],[43.1,5.1],[43.2,5.2]]},
+			"altitude":{"type":"altitude","data":[100,120,140]},
+			"time":{"type":"time","data":[0,10,25]}
+		}`))
+		require.NoError(t, err)
+	})
+
+	latlng, altitude, seconds, err := client.ActivityStreams(42)
+	require.NoError(t, err)
+	require.Len(t, latlng, 3)
+	assert.Equal(t, [2]float64{43.0, 5.0}, latlng[0])
+	assert.Equal(t, []float64{100, 120, 140}, altitude)
+	assert.Equal(t, []float64{0, 10, 25}, seconds)
+}
+
+func TestWriteActivityGPX(t *testing.T) {
+	activity := Activity{ID: 42, Name: "Ride A", StartDate: time.Date(2026, 1, 1, 10, 0, 0, 0, time.UTC)}
+	latlng := [][2]float64{{43.0, 5.0}, {43.1, 5.1}}
+	altitude := []float64{100, 120}
+	seconds := []float64{0, 10}
+
+	file := filepath.Join(t.TempDir(), "activity_42.gpx")
+	err := WriteActivityGPX(file, activity, latlng, altitude, seconds)
+	require.NoError(t, err)
+
+	data, err := os.ReadFile(file)
+	require.NoError(t, err)
+	parsed, err := gpx.ParseBytes(data)
+	require.NoError(t, err)
+	require.Len(t, parsed.Tracks, 1)
+	require.Len(t, parsed.Tracks[0].Segments, 1)
+	points := parsed.Tracks[0].Segments[0].Points
+	require.Len(t, points, 2)
+	assert.Equal(t, 43.0, points[0].Latitude)
+	assert.Equal(t, 5.1, points[1].Longitude)
+	assert.Equal(t, 100.0, points[0].Elevation.Value())
+	assert.Equal(t, activity.StartDate.Add(10*time.Second), points[1].Timestamp)
+	assert.Equal(t, "Ride A", parsed.Name)
+}