[Ermine] Updated tests for visualizer models

Change-Id: I7ec2030e5e4b3f9edcbf731561591e63de96b4c2
diff --git a/session_shells/ermine/test/status_graph_visualizer_model_test.dart b/session_shells/ermine/test/status_graph_visualizer_model_test.dart
index aa30824..e04c43b 100644
--- a/session_shells/ermine/test/status_graph_visualizer_model_test.dart
+++ b/session_shells/ermine/test/status_graph_visualizer_model_test.dart
@@ -10,10 +10,15 @@
 import 'package:test/test.dart';
 
 void main() {
+  StatusGraphVisualizerModel testGraphModel;
+
+  setUp(() async {
+    testGraphModel = StatusGraphVisualizerModel();
+  });
+
   test(
       'test to confirm StatusGraphVisualizerModel contains non-breaking default values',
       () {
-    StatusGraphVisualizerModel testGraphModel = StatusGraphVisualizerModel();
     expect(testGraphModel.graphValue, 'loading...');
     expect(
         testGraphModel.graphData, lessThanOrEqualTo(testGraphModel.graphMax));
@@ -31,19 +36,23 @@
     expect(testGraphModel.fillActive, isNotNull);
   });
 
-  test('test to confirm StatusGraphModel setters work properly', () {
-    StatusGraphVisualizerModel testGraphModel = StatusGraphVisualizerModel();
-    // Check setter for graphValue
+  test('test to confirm StatusGraphModel graphValue setter works properly', () {
     String initialBarValue = testGraphModel.graphValue;
     expect(testGraphModel.graphValue, initialBarValue);
     String testValue = 'testGraphValue';
     testGraphModel.graphValue = testValue;
     expect(testGraphModel.graphValue, testValue);
-    // Check setter for graphData
+  });
+
+  test('test to confirm StatusGraphModel graphData setter works properly', () {
     double initialBarMax = testGraphModel.graphData;
     expect(testGraphModel.graphData, initialBarMax);
     double randomGraphData = Random().nextDouble() * 100;
     testGraphModel.graphData = randomGraphData;
     expect(testGraphModel.graphData, randomGraphData);
   });
+
+  tearDown(() async {
+    testGraphModel = null;
+  });
 }
diff --git a/session_shells/ermine/test/status_progress_bar_visualizer_model_test.dart b/session_shells/ermine/test/status_progress_bar_visualizer_model_test.dart
index 7224b6f..a991a4b 100644
--- a/session_shells/ermine/test/status_progress_bar_visualizer_model_test.dart
+++ b/session_shells/ermine/test/status_progress_bar_visualizer_model_test.dart
@@ -10,11 +10,15 @@
 import 'package:test/test.dart';
 
 void main() {
+  StatusProgressBarVisualizerModel testProgressBarModel;
+
+  setUp(() async {
+    testProgressBarModel = StatusProgressBarVisualizerModel();
+  });
+
   test(
       'test to confirm StatusProgressBarVisualizerModel contains non-breaking default values',
       () {
-    StatusProgressBarVisualizerModel testProgressBarModel =
-        StatusProgressBarVisualizerModel();
     expect(testProgressBarModel.barValue, 'loading...');
     expect(testProgressBarModel.barSize, inInclusiveRange(0, 1));
     expect(testProgressBarModel.barMax, greaterThan(0));
@@ -28,27 +32,37 @@
     expect(testProgressBarModel.barFirst, isNotNull);
   });
 
-  test('test to confirm StatusProgressBarVisualizerModel setters work properly',
+  test(
+      'test to confirm StatusProgressBarVisualizerModel barValue setter works properly',
       () {
-    StatusProgressBarVisualizerModel testProgressBarModel =
-        StatusProgressBarVisualizerModel();
-    // Check setter for barValue
     String initialBarValue = testProgressBarModel.barValue;
     expect(testProgressBarModel.barValue, initialBarValue);
     String testValue = 'testBarValue';
     testProgressBarModel.barValue = testValue;
     expect(testProgressBarModel.barValue, testValue);
-    // Check setter for barFill
+  });
+
+  test(
+      'test to confirm StatusProgressBarVisualizerModel barFill setter works properly',
+      () {
     double initialBarFill = testProgressBarModel.barFill;
     expect(testProgressBarModel.barFill, initialBarFill);
     double randomBarFill = Random().nextDouble() * 100;
     testProgressBarModel.barFill = randomBarFill;
     expect(testProgressBarModel.barFill, randomBarFill);
-    // Check setter for barMax
+  });
+
+  test(
+      'test to confirm StatusProgressBarVisualizerModel basrMax setter works properly',
+      () {
     double initialBarMax = testProgressBarModel.barMax;
     expect(testProgressBarModel.barMax, initialBarMax);
     double randomBarMax = Random().nextDouble() * 100;
     testProgressBarModel.barMax = randomBarMax;
     expect(testProgressBarModel.barMax, randomBarMax);
   });
+
+  tearDown(() async {
+    testProgressBarModel = null;
+  });
 }
diff --git a/session_shells/ermine/test/status_tick_bar_visualizer_model_test.dart b/session_shells/ermine/test/status_tick_bar_visualizer_model_test.dart
index d9ab621..fc98c4e 100644
--- a/session_shells/ermine/test/status_tick_bar_visualizer_model_test.dart
+++ b/session_shells/ermine/test/status_tick_bar_visualizer_model_test.dart
@@ -10,11 +10,15 @@
 import 'package:test/test.dart';
 
 void main() {
+  StatusTickBarVisualizerModel testTickBarModel;
+
+  setUp(() async {
+    testTickBarModel = StatusTickBarVisualizerModel();
+  });
+
   test(
       'test to confirm StatusTickBarVisualizerModel contains non-breaking default values',
       () {
-    StatusTickBarVisualizerModel testTickBarModel =
-        StatusTickBarVisualizerModel();
     expect(testTickBarModel.barValue, 'loading...');
     expect(testTickBarModel.barFill, greaterThanOrEqualTo(0));
     expect(
@@ -26,27 +30,37 @@
     expect(testTickBarModel.barFirst, isNotNull);
   });
 
-  test('test to confirm StatusTickBarVisualizerModel setters work properly',
+  test(
+      'test to confirm StatusTickBarVisualizerModel barValue setter works properly',
       () {
-    StatusTickBarVisualizerModel testTickBarModel =
-        StatusTickBarVisualizerModel();
-    // Check setter for barValue
     String initialBarValue = testTickBarModel.barValue;
     expect(testTickBarModel.barValue, initialBarValue);
     String testValue = 'testBarValue';
     testTickBarModel.barValue = testValue;
     expect(testTickBarModel.barValue, testValue);
-    // Check setter for barFill
+  });
+
+  test(
+      'test to confirm StatusTickBarVisualizerModel barFill setter works properly',
+      () {
     double initialBarFill = testTickBarModel.barFill;
     expect(testTickBarModel.barFill, initialBarFill);
     double randomBarFill = Random().nextDouble() * 100;
     testTickBarModel.barFill = randomBarFill;
     expect(testTickBarModel.barFill, randomBarFill);
-    // Check setter for barMax
+  });
+
+  test(
+      'test to confirm StatusTickBarVisualizerModel barMax setter works properly',
+      () {
     double initialBarMax = testTickBarModel.barMax;
     expect(testTickBarModel.barMax, initialBarMax);
     double randomBarMax = Random().nextDouble() * 100;
     testTickBarModel.barMax = randomBarMax;
     expect(testTickBarModel.barMax, randomBarMax);
   });
+
+  tearDown(() async {
+    testTickBarModel = null;
+  });
 }