ci: run non-golden widget tests in CI coverage (#416)

This PR includes widget tests (excluding golden tests) in the CI coverage run, ensuring widget layout and UI logic are tested automatically.

Co-authored-by: Thomas Güttler <thomas.guettler@syself.com>
Reviewed-on: https://codeberg.org/guettli/sharedinbox/pulls/416

ci/main.go

@@ -461,12 +461,12 @@ func (m *Ci) CheckGenerated(ctx context.Context) (string, error) {
 		Stdout(ctx)
 }
 
-// Coverage runs unit tests with coverage gate.
+// Coverage runs unit and widget tests with coverage gate.
 func (m *Ci) Coverage(ctx context.Context) (string, error) {
 	return m.setup(m.checkSrc()).
 		WithExec([]string{"/bin/bash", "-c",
 			`tmp=$(mktemp); trap 'rm -f "$tmp"' EXIT; ` +
-				`flutter test test/unit --coverage --reporter expanded --no-pub >"$tmp" 2>&1 || { cat "$tmp"; exit 1; }; ` +
+				`flutter test test/unit test/widget --exclude-tags golden --coverage --reporter expanded --no-pub >"$tmp" 2>&1 || { cat "$tmp"; exit 1; }; ` +
 				`grep -E '^All [0-9]+ tests passed' "$tmp" || tail -1 "$tmp"`}).
 		WithExec([]string{"dart", "scripts/check_coverage.dart"}).
 		Stdout(ctx)

test/widget/email_list_screen_golden_test.dart

@@ -1,3 +1,6 @@
+@Tags(['golden'])
+library;
+
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/misc.dart' show Override;
 import 'package:flutter_test/flutter_test.dart';