Add ProgressView tests

Author: carson-katri

Sources/LiveViewNative/Views/Controls and Indicators/Indicators/ProgressView.swift

@@ -20,6 +20,7 @@ struct ProgressView<R: CustomRegistry>: View {
             if let timerIntervalStart = element.attributeValue(for: "timer-interval-start").flatMap({ try? ElixirDateParseStrategy().parse($0) }),
                let timerIntervalEnd = element.attributeValue(for: "timer-interval-end").flatMap({ try? ElixirDateParseStrategy().parse($0) })
             {
+                // TODO: Note that this variant has a default `currentValueLabel`, which should be used if no current value label slot is used. It seems to only be active when initializing without the `currentValueLabel` argument.
                 SwiftUI.ProgressView(
                     timerInterval: timerIntervalStart...timerIntervalEnd,
                     countsDown: element.attributeValue(for: "counts-down") != "false"

Tests/RenderingTests/ProgressViewTests.swift

@@ -0,0 +1,25 @@
+//
+//  ProgressViewTests.swift
+//  
+//
+//  Created by Carson Katri on 1/17/23.
+//
+
+import XCTest
+import SwiftUI
+@testable import LiveViewNative
+
+@MainActor
+final class ProgressViewTests: XCTestCase {
+    func testValue() throws {
+        try assertMatch(#"<progressview value="0.5" />"#) {
+            ProgressView(value: 0.5)
+        }
+    }
+    
+    func testTotal() throws {
+        try assertMatch(#"<progressview value="2.5" total="5" />"#) {
+            ProgressView(value: 0.5, total: 5)
+        }
+    }
+}