fix: moved test out of lib folder

packages/at_viz/lib/at_gauges/linear_gauges/gauge.dart

@@ -1,7 +1,7 @@
 import 'package:flutter/material.dart';
 
 class LinearGauge extends StatefulWidget {
-  LinearGauge({
+  const LinearGauge({
     required this.maxValue,
     required this.minValue,
     required this.actualValue,

packages/at_viz/lib/at_gauges/linear_gauges/simple_linear_gauge.dart

@@ -7,7 +7,8 @@ import 'package:flutter/material.dart';
 import '../painters/linear/simple_linear_gauge_painter.dart';
 
 class SimpleLinearGauge extends LinearCustomGauge {
-  SimpleLinearGauge({
+  const SimpleLinearGauge({
+    super.key,
     required double maxValue,
     required double actualValue,
     double minValue = 0,
@@ -94,7 +95,6 @@ class _SimpleLinearGaugeState extends State<SimpleLinearGauge>
       animationController.animateTo(widget.actualValue);
     }
     return CustomPaint(
-      child: SizedBox.expand(),
       painter: SimpleLinearGaugePainter(
         maxValue: widget.maxValue,
         minValue: widget.minValue,
@@ -113,6 +113,7 @@ class _SimpleLinearGaugeState extends State<SimpleLinearGauge>
         majorTicksValueTextStyle: widget.majorTicksValueTextStyle,
         gaugeOrientation: widget.gaugeOrientation,
       ),
+      child: const SizedBox.expand(),
     );
   }
 }

packages/at_viz/lib/at_gauges/utils/abstract_classes.dart

@@ -326,9 +326,7 @@ abstract class LinearCustomPainter extends CustomPainter {
       textAlign: TextAlign.center,
       text: TextSpan(
           text: title.data,
-          style: title.style == null
-              ? TextStyle(color: Colors.black)
-              : title.style),
+          style: title.style ?? const TextStyle(color: Colors.black)),
       textDirection: TextDirection.ltr,
     )..layout();
 
@@ -412,7 +410,8 @@ abstract class LinearCustomPainter extends CustomPainter {
 }
 
 abstract class LinearCustomGauge extends StatefulWidget {
-  LinearCustomGauge({
+  const LinearCustomGauge({
+    super.key,
     required this.minValue,
     required this.maxValue,
     required this.actualValue,

packages/at_viz/lib/at_charts/at_time_series_chart/test/at_time_series_chart_data_test.dart → packages/at_viz/test/at_charts/at_time_series_chart_data_test.dart

@@ -1,4 +1,4 @@
-import 'package:at_time_series_chart/at_time_series_chart.dart';
+import 'package:at_viz/at_charts/at_time_series_chart/lib/at_time_series_chart.dart';
 import 'package:flutter_test/flutter_test.dart';
 
 void main() {

packages/at_viz/lib/at_charts/at_time_series_chart/test/at_time_series_chart_test.dart → packages/at_viz/test/at_charts/at_time_series_chart_test.dart

@@ -1,6 +1,6 @@
 import 'dart:math';
 
-import 'package:at_time_series_chart/at_time_series_chart.dart';
+import 'package:at_viz/at_charts/at_time_series_chart/lib/at_time_series_chart.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 

packages/at_viz/test/at_gauges/utils_test.dart

@@ -0,0 +1,38 @@
+// This is a basic Flutter widget test.
+//
+// To perform an interaction with a widget in your test, use the WidgetTester
+// utility in the flutter_test package. For example, you can send tap and scroll
+// gestures. You can also use WidgetTester to find child widgets in the widget
+// tree, read text, and verify that the values of widget properties are correct.
+
+import 'package:at_viz/at_gauges/utils/radial_helper.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  group('utils functions', () {
+    test('radians should be 6.28319', (() {
+      expect(RadialHelper.degreesToRadians(360), 6.283185307179586);
+    }));
+
+    test('degrees should be 360', (() {
+      expect(RadialHelper.radiansToDegrees(6.283185307179586), 360);
+    }));
+
+    test('sweepAngle should be 180', (() {
+      expect(
+          RadialHelper.actualValueToSweepAngle(
+              actualValue: 10, maxValue: 20, maxDegrees: 360),
+          180);
+    }));
+
+    test('actual value should be 50', () {
+      expect(
+          RadialHelper.sweepAngleToActualValue(
+              sweepAngle: RadialHelper.degreesToRadians(180),
+              maxValue: 100,
+              maxDegrees: 360,
+              minValue: 0),
+          50);
+    });
+  });
+}