Use HTMX fragements on the fitness dashboard

fitness_test.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"net/http/httptest"
 	"os"
 	"strings"
 	"path/filepath"
@@ -74,3 +75,56 @@ func TestTimeXTicks(t *testing.T) {
 		}
 	}
 }
+
+func TestFitnessChartFragment(t *testing.T) {
+	withBerlin(t)
+	root := t.TempDir()
+	cals := filepath.Join(root, "Calendars")
+	fit := filepath.Join(root, "My Fitness")
+	for _, d := range []string{cals, fit} {
+		if err := os.MkdirAll(d, 0755); err != nil {
+			t.Fatal(err)
+		}
+	}
+	prev := calendarsDir
+	calendarsDir = cals
+	t.Cleanup(func() { calendarsDir = prev })
+	if err := os.WriteFile(filepath.Join(cals, ".page-settings"), []byte("type = calendars\nweight = Gewicht\n"), 0644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(fit, ".page-settings"), []byte("type = fitness\n"), 0644); err != nil {
+		t.Fatal(err)
+	}
+	writeCal(t, cals, "Gewicht", `UID:1
+		SUMMARY:96 kg
+		DTSTART;VALUE=DATE:20200101`)
+
+	h := &handler{root: root}
+	get := func(query string, hx bool) *httptest.ResponseRecorder {
+		r := httptest.NewRequest("GET", "/My%20Fitness/?"+query, nil)
+		if hx {
+			r.Header.Set("HX-Request", "true")
+		}
+		w := httptest.NewRecorder()
+		h.serveDir(w, r, "/My Fitness", fit)
+		return w
+	}
+
+	w := get("chart=weekly&weight=3m&weekly=all&weekly-absolute=1", true)
+	body := w.Body.String()
+	if w.Code != 200 || strings.Contains(body, "<html") || strings.Count(body, `class="fitness-chart panel"`) != 1 ||
+		!strings.Contains(body, `name="weekly"`) || !strings.Contains(body, `value="all" selected`) {
+		t.Errorf("weekly fragment: %d\n%s", w.Code, body)
+	}
+	if got, want := w.Header().Get("HX-Replace-Url"), "/My%20Fitness/?weekly=all&weekly-absolute=1"; got != want {
+		t.Errorf("HX-Replace-Url = %q, want %q", got, want)
+	}
+
+	if w := get("chart=bogus", true); w.Code != 404 {
+		t.Errorf("unknown chart: got %d, want 404", w.Code)
+	}
+	// Without htmx the parameter is ignored and the full page renders.
+	if body := get("chart=weekly", false).Body.String(); strings.Count(body, `class="fitness-chart panel"`) != 2 {
+		t.Errorf("non-htmx request did not render the dashboard:\n%s", body)
+	}
+}