Add view rendering snapshot tests

2026-07-27 15:46:21 +00:00
parent 192fcca9c0
commit b7804a8fe7
1 changed files with 149 additions and 0 deletions
@@ -0,0 +1,149 @@
+import AppKit
+import Foundation
+import SwiftUI
+import Testing
+
+@testable import Photochk
+
+/// 画面が実際に描けることを確かめる。
+///
+/// 描いた PNG は一時フォルダに残すので、目視で確認したいときはテスト出力に出るパスを開く。
+@Suite("画面の描画")
+@MainActor
+struct SnapshotTests {
+    /// 実物に近い見た目にするため、寸法・容量・撮影日が散らばったグループを作る。
+    private func makeFixtureModel() async throws -> (ScanViewModel, URL) {
+        let directory = try TestImages.makeTemporaryDirectory()
+        let pattern = TestImages.pattern(seed: 42)
+
+        let base = directory.appendingPathComponent("IMG_0001.jpg")
+        try TestImages.writeJPEG(pattern, to: base, quality: 0.95)
+        try FileManager.default.copyItem(
+            at: base, to: directory.appendingPathComponent("IMG_0001のコピー.jpg")
+        )
+        try TestImages.writeJPEG(
+            TestImages.scaled(pattern, factor: 0.5),
+            to: directory.appendingPathComponent("IMG_0001_small.jpg"),
+            quality: 0.9
+        )
+        try TestImages.writeJPEG(
+            pattern, to: directory.appendingPathComponent("IMG_0001_line.jpg"), quality: 0.3
+        )
+        let other = TestImages.pattern(seed: 9_999)
+        try TestImages.writeJPEG(other, to: directory.appendingPathComponent("IMG_9000.jpg"), quality: 0.95)
+        try FileManager.default.copyItem(
+            at: directory.appendingPathComponent("IMG_9000.jpg"),
+            to: directory.appendingPathComponent("IMG_9000_backup.jpg")
+        )
+
+        let groups = try await SimilarityGrouper.run(
+            root: directory,
+            settings: ScanSettings(includesSubfolders: true, sensitivity: .standard),
+            cache: FingerprintCache(fileURL: nil),
+            progress: { _ in }
+        )
+
+        let model = ScanViewModel()
+        model.setGroupsForTesting(groups)
+        // サムネイルを先に読み込んでおく。描画時はキャッシュから同期的に出る。
+        for group in groups {
+            for member in group.members {
+                _ = await ThumbnailLoader.shared.thumbnail(for: member.id, size: 168)
+                _ = await ThumbnailLoader.shared.thumbnail(for: member.id, size: 52)
+            }
+        }
+        return (model, directory)
+    }
+
+    private func render(
+        _ view: some View, width: CGFloat, height: CGFloat, name: String
+    ) throws -> URL {
+        let renderer = ImageRenderer(
+            content: view
+                .frame(width: width, height: height)
+                .background(Color(nsColor: .windowBackgroundColor))
+        )
+        renderer.scale = 2
+
+        let image = try #require(renderer.nsImage, "\(name) を描画できなかった")
+        let tiff = try #require(image.tiffRepresentation)
+        let bitmap = try #require(NSBitmapImageRep(data: tiff))
+        let png = try #require(bitmap.representation(using: .png, properties: [:]))
+
+        let directory = URL(fileURLWithPath: NSTemporaryDirectory())
+            .appendingPathComponent("photochk-snapshots", isDirectory: true)
+        try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true)
+        let url = directory.appendingPathComponent("\(name).png")
+        try png.write(to: url)
+        return url
+    }
+
+    @Test("写真タイルが状態ごとに描画できる")
+    func rendersPhotoTiles() async throws {
+        let (model, directory) = try await makeFixtureModel()
+        defer { try? FileManager.default.removeItem(at: directory) }
+
+        let group = try #require(model.groups.first)
+        try #require(group.members.count >= 4, "タイルを並べるだけの枚数が必要")
+
+        // 代表 / 通常 / 選択済み / 最後の1枚（選択不可）を横に並べる
+        let tiles = HStack(alignment: .top, spacing: 18) {
+            PhotoTileView(
+                member: group.members[0], isRepresentative: true,
+                isMarked: false, canMark: true, onToggle: {}
+            )
+            PhotoTileView(
+                member: group.members[1], isRepresentative: false,
+                isMarked: false, canMark: true, onToggle: {}
+            )
+            PhotoTileView(
+                member: group.members[2], isRepresentative: false,
+                isMarked: true, canMark: true, onToggle: {}
+            )
+            PhotoTileView(
+                member: group.members[3], isRepresentative: false,
+                isMarked: false, canMark: false, onToggle: {}
+            )
+        }
+        .padding(20)
+
+        let url = try render(tiles, width: 800, height: 300, name: "photo-tiles")
+        print("[snapshot] \(url.path)")
+    }
+
+    @Test("グループ一覧の行が描画できる")
+    func rendersGroupRows() async throws {
+        let (model, directory) = try await makeFixtureModel()
+        defer { try? FileManager.default.removeItem(at: directory) }
+
+        model.applyKeepRule(.highestResolution)
+
+        let rows = VStack(alignment: .leading, spacing: 8) {
+            ForEach(model.groups) { group in
+                GroupRow(
+                    group: group,
+                    markedCount: group.members.filter {
+                        model.markedForDeletion.contains($0.id)
+                    }.count
+                )
+                Divider()
+            }
+        }
+        .padding(12)
+
+        let url = try render(rows, width: 300, height: 220, name: "group-rows")
+        print("[snapshot] \(url.path)")
+    }
+
+    @Test("スキャン中の表示が描画できる")
+    func rendersProgress() throws {
+        let url = try render(
+            ScanProgressView(
+                progress: ScanProgress(phase: .fingerprinting, completed: 128, total: 940),
+                onCancel: {}
+            ),
+            width: 420, height: 220, name: "progress"
+        )
+        print("[snapshot] \(url.path)")
+    }
+}