Base fixes and test harness

PortfolioJournalUITests/PortfolioJournalUITestsLaunchTests.swift

@@ -0,0 +1,32 @@
+import XCTest
+
+/// Launch performance tests for Portfolio Journal
+final class PortfolioJournalUITestsLaunchTests: XCTestCase {
+
+    override class var runsForEachTargetApplicationUIConfiguration: Bool {
+        true
+    }
+
+    override func setUpWithError() throws {
+        continueAfterFailure = false
+    }
+
+    func testLaunch() throws {
+        let app = XCUIApplication()
+        app.launch()
+
+        // Take a screenshot after launch
+        let attachment = XCTAttachment(screenshot: app.screenshot())
+        attachment.name = "Launch Screen"
+        attachment.lifetime = .keepAlways
+        add(attachment)
+    }
+
+    func testLaunchPerformance() throws {
+        if #available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 7.0, *) {
+            measure(metrics: [XCTApplicationLaunchMetric()]) {
+                XCUIApplication().launch()
+            }
+        }
+    }
+}