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Added Attributes tests; balanced Application.Init/Shutdown

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This commit is contained in:
Charlie Kindel
2021-05-17 18:22:46 -07:00
parent 0fad21607b
commit 8d8025329e
19 changed files with 956 additions and 490 deletions
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80
UnitTests/ScrollBarViewTests.cs
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@@ -1,8 +1,51 @@
using System;
using System.Diagnostics;
using System.Reflection;
using Xunit;
namespace Terminal.Gui.Views {
public class ScrollBarViewTests {
// This class enables test functions annoated with the [InitShutdown] attribute
// to have a function called before the test function is called and after.
//
// This is necessary because a) Application is a singleton and Init/Shutdown must be called
// as a pair, and b) all unit test functions should be atomic.
[AttributeUsage (AttributeTargets.Class | AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public class InitShutdown : Xunit.Sdk.BeforeAfterTestAttribute {
public override void Before (MethodInfo methodUnderTest)
{
Debug.WriteLine ($"Before: {methodUnderTest.Name}");
if (_hostView != null) {
throw new InvalidOperationException ("After did not run.");
}
Application.Init (new FakeDriver (), new FakeMainLoop (() => FakeConsole.ReadKey (true)));
var top = Application.Top;
ScrollBarViewTests._hostView = new HostView () {
Width = Dim.Fill (),
Height = Dim.Fill (),
Top = 0,
Lines = 30,
Left = 0,
Cols = 100
};
top.Add (ScrollBarViewTests._hostView);
}
public override void After (MethodInfo methodUnderTest)
{
Debug.WriteLine ($"After: {methodUnderTest.Name}");
ScrollBarViewTests._hostView = null;
Application.Shutdown ();
}
}
public class HostView : View {
public int Top { get; set; }
public int Lines { get; set; }
@@ -10,27 +53,9 @@ namespace Terminal.Gui.Views {
public int Cols { get; set; }
}
private HostView _hostView;
private static HostView _hostView;
private ScrollBarView _scrollBar;
private bool _added;
public ScrollBarViewTests ()
{
Application.Init (new FakeDriver (), new FakeMainLoop (() => FakeConsole.ReadKey (true)));
var top = Application.Top;
_hostView = new HostView () {
Width = Dim.Fill (),
Height = Dim.Fill (),
Top = 0,
Lines = 30,
Left = 0,
Cols = 100
};
top.Add (_hostView);
}
private bool _added;
private void AddHandlers ()
{
@@ -80,6 +105,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void Hosting_A_Null_View_To_A_ScrollBarView_Throws_ArgumentNullException ()
{
Assert.Throws<ArgumentNullException> ("The host parameter can't be null.",
@@ -89,6 +115,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void Hosting_A_Null_SuperView_View_To_A_ScrollBarView_Throws_ArgumentNullException ()
{
Assert.Throws<ArgumentNullException> ("The host SuperView parameter can't be null.",
@@ -98,6 +125,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void Hosting_Two_Vertical_ScrollBarView_Throws_ArgumentException ()
{
var top = new Toplevel ();
@@ -111,6 +139,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void Hosting_Two_Horizontal_ScrollBarView_Throws_ArgumentException ()
{
var top = new Toplevel ();
@@ -124,6 +153,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void Scrolling_With_Default_Constructor_Do_Not_Scroll ()
{
var sbv = new ScrollBarView {
@@ -134,6 +164,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void Hosting_A_View_To_A_ScrollBarView ()
{
RemoveHandlers ();
@@ -159,6 +190,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void ChangedPosition_Update_The_Hosted_View ()
{
Hosting_A_View_To_A_ScrollBarView ();
@@ -173,6 +205,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void ChangedPosition_Scrolling ()
{
Hosting_A_View_To_A_ScrollBarView ();
@@ -199,6 +232,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void ChangedPosition_Negative_Value ()
{
Hosting_A_View_To_A_ScrollBarView ();
@@ -215,6 +249,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void DrawContent_Update_The_ScrollBarView_Position ()
{
Hosting_A_View_To_A_ScrollBarView ();
@@ -231,6 +266,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void OtherScrollBarView_Not_Null ()
{
Hosting_A_View_To_A_ScrollBarView ();
@@ -243,6 +279,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void ShowScrollIndicator_Check ()
{
Hosting_A_View_To_A_ScrollBarView ();
@@ -254,6 +291,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void KeepContentAlwaysInViewport_True ()
{
Hosting_A_View_To_A_ScrollBarView ();
@@ -293,6 +331,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void KeepContentAlwaysInViewport_False ()
{
Hosting_A_View_To_A_ScrollBarView ();
@@ -314,6 +353,7 @@ namespace Terminal.Gui.Views {
}
[Fact]
[InitShutdown]
public void AutoHideScrollBars_Check ()
{
Hosting_A_View_To_A_ScrollBarView ();