Add LinkButton unit tests (#142)

Author: hishamco

src/BlazorWebFormsComponents.Test/LinkButton/Click.razor

@@ -0,0 +1,30 @@
+@inherits TestComponentBase
+
+<Fixture Test="FirstTest">
+	<ComponentUnderTest>
+		<LinkButton OnClick="OnClick">Click me!</LinkButton>
+	</ComponentUnderTest>
+</Fixture>
+
+@code{
+	public string TheContent { get; set; } = "Not clicked yet!";
+
+	void OnClick()
+	{
+		TheContent = "I've been clicked";
+	}
+
+	void FirstTest()
+	{
+		// Given
+		var cut = GetComponentUnderTest();
+
+		TheContent.ShouldBe("Not clicked yet!");
+
+		// When
+		cut.Find("a").Click();
+
+		// Then
+		TheContent.ShouldBe("I've been clicked");
+	}
+}

src/BlazorWebFormsComponents.Test/LinkButton/Command.razor

@@ -0,0 +1,33 @@
+@inherits TestComponentBase
+
+<Fixture Test="FirstTest">
+	<ComponentUnderTest>
+		<LinkButton CommandName="Foo" CommandArgument="CommandArgument" OnCommand="OnCommand">Click me!</LinkButton>
+	</ComponentUnderTest>
+</Fixture>
+
+@code{
+	public string TheContent { get; set; } = "No Command yet!";
+
+	public string CommandArgument = "bar";
+
+	void OnCommand(CommandEventArgs args)
+	{
+		TheContent = $"Command '{args.CommandName}' : '{args.CommandArgument.ToString()}'";
+	}
+
+	void FirstTest()
+	{
+		// Given
+		var cut = GetComponentUnderTest();
+
+		TheContent.ShouldBe("No Command yet!");
+
+		// When
+		cut.Find("a").Click();
+
+		// Then
+		TheContent.ShouldBe("Command 'Foo' : 'bar'");
+
+	}
+}

src/BlazorWebFormsComponents.Test/LinkButton/Format.razor

@@ -0,0 +1,10 @@
+@inherits TestComponentBase
+
+<SnapshotTest Description="Verify HTML format of LinkButton">
+	<TestInput>
+		<LinkButton Text="Go to Bing!!" PostBackUrl="https://www.bing.com" />
+	</TestInput>
+	<ExpectedOutput>
+		<a href="https://www.bing.com">Go to Bing!!</a>
+	</ExpectedOutput>
+</SnapshotTest>