1 files changed, 91 insertions, 0 deletions
diff --git a/internal/web/server_test.go b/internal/web/server_test.go
index 9e37177..b5cf78a 100644
--- a/internal/web/server_test.go
+++ b/internal/web/server_test.go
@@ -104,4 +104,95 @@ func TestServer(t *testing.T) {
 			t.Error("theme.css fallback served empty body")
 		}
 	})
+
+	t.Run("readings partial interlinear", func(t *testing.T) {
+		rec := httptest.NewRecorder()
+		srv.ServeHTTP(rec, httptest.NewRequest("GET", "/readings?date=2026-07-22&v=wuj&v=vul&display=interlinear", nil))
+		if rec.Code != http.StatusOK {
+			t.Fatalf("status = %d, want 200", rec.Code)
+		}
+		body := rec.Body.String()
+		if strings.Contains(body, "<html") {
+			t.Errorf("partial is not a fragment: %q", body)
+		}
+		i := strings.Index(body, `class="vnum"`)
+		if i == -1 {
+			t.Fatalf("interlinear partial missing a vnum verse label: %q", body)
+		}
+		// Bound the first ilverse block by the next vnum span (each ilverse
+		// carries exactly one), so the check covers every version's line
+		// grouped under that one key, not just the first.
+		block := body[i:]
+		if j := strings.Index(body[i+1:], `class="vnum"`); j != -1 {
+			block = body[i : i+1+j]
+		}
+		if !strings.Contains(block, "Wujek") || !strings.Contains(block, "Wulgata") {
+			t.Errorf("interlinear verse block missing both version labels grouped together: %q", block)
+		}
+	})
+
+	t.Run("readings partial vertical", func(t *testing.T) {
+		rec := httptest.NewRecorder()
+		srv.ServeHTTP(rec, httptest.NewRequest("GET", "/readings?date=2026-07-22&v=wuj&v=vul&display=vertical", nil))
+		if rec.Code != http.StatusOK {
+			t.Fatalf("status = %d, want 200", rec.Code)
+		}
+		if !strings.Contains(rec.Body.String(), "display-vertical") {
+			t.Errorf("vertical partial missing display-vertical: %q", rec.Body.String())
+		}
+	})
+
+	t.Run("readings partial interlinear substitutes pl", func(t *testing.T) {
+		rec := httptest.NewRecorder()
+		srv.ServeHTTP(rec, httptest.NewRequest("GET", "/readings?date=2026-07-22&v=pl&display=interlinear", nil))
+		if rec.Code != http.StatusOK {
+			t.Fatalf("status = %d, want 200", rec.Code)
+		}
+		body := rec.Body.String()
+		if !strings.Contains(body, "Wujek") {
+			t.Errorf("pl should be substituted with wuj in interlinear mode: %q", body)
+		}
+		if strings.Contains(body, "Polski (niedziela.pl)") {
+			t.Errorf("pl paragraph column should not appear in interlinear mode: %q", body)
+		}
+	})
+
+	t.Run("readings partial bad display falls back to horizontal", func(t *testing.T) {
+		rec := httptest.NewRecorder()
+		srv.ServeHTTP(rec, httptest.NewRequest("GET", "/readings?date=2026-07-22&v=wuj&display=bogus", nil))
+		if rec.Code != http.StatusOK {
+			t.Fatalf("status = %d, want 200", rec.Code)
+		}
+		body := rec.Body.String()
+		if strings.Contains(body, "display-vertical") || strings.Contains(body, "ilverse") {
+			t.Errorf("bad display should fall back to horizontal, got: %q", body)
+		}
+	})
+
+	t.Run("index page seeds lookup results from ?ref=", func(t *testing.T) {
+		rec := httptest.NewRecorder()
+		srv.ServeHTTP(rec, httptest.NewRequest("GET", "/?ref=J+20:1&v=wuj", nil))
+		if rec.Code != http.StatusOK {
+			t.Fatalf("status = %d, want 200", rec.Code)
+		}
+		body := rec.Body.String()
+		if !strings.Contains(body, `id="lookup-results"`) {
+			t.Fatalf("body missing lookup-results container: %q", body)
+		}
+		i := strings.Index(body, `id="lookup-results"`)
+		if !strings.Contains(body[i:], "20:1") {
+			t.Errorf("lookup-results not populated from ?ref=: %q", body[i:min(i+400, len(body))])
+		}
+	})
+
+	t.Run("index page seeds display select from cfg", func(t *testing.T) {
+		rec := httptest.NewRecorder()
+		srv.ServeHTTP(rec, httptest.NewRequest("GET", "/?date=2026-07-22&v=wuj", nil))
+		if rec.Code != http.StatusOK {
+			t.Fatalf("status = %d, want 200", rec.Code)
+		}
+		if !strings.Contains(rec.Body.String(), `name="display"`) {
+			t.Errorf("body missing display select: %q", rec.Body.String())
+		}
+	})
 }