test: WebPageImageStoreImpl의 로직 테스트 추가

Author: opficdev

Application/DevLogPersistence/Tests/Persistence/WebPageImageStoreImplTests.swift

@@ -0,0 +1,79 @@
+//
+//  WebPageImageStoreImplTests.swift
+//  DevLogPersistenceTests
+//
+//  Created by opfic on 6/3/26.
+//
+
+import Foundation
+import Testing
+@testable import DevLogPersistence
+
+@Suite(.serialized)
+struct WebPageImageStoreImplTests {
+    @Test("웹페이지 이미지는 저장되고 삭제된다")
+    func 웹페이지_이미지는_저장되고_삭제된다() async throws {
+        let store = WebPageImageStoreImpl()
+        let fileManager = FileManager.default
+        try await store.clearDirectory()
+        let url = try #require(URL(string: "https://example.com/image"))
+        let data = Data("image-data".utf8)
+
+        let fileURL = try await store.saveImage(data, for: url)
+
+        let savedData = try #require(fileManager.contents(atPath: fileURL.path))
+        let directorySize = await store.dirSizeInBytes()
+        #expect(fileURL.deletingLastPathComponent().lastPathComponent == "webPageImages")
+        #expect(savedData == data)
+        #expect(0 < directorySize)
+
+        let removed = try await store.removeImage(for: url)
+        let removedAgain = try await store.removeImage(for: url)
+
+        #expect(removed)
+        #expect(!removedAgain)
+        #expect(!fileManager.fileExists(atPath: fileURL.path))
+
+        try await store.clearDirectory()
+    }
+
+    @Test("웹페이지 이미지 디렉터리 삭제는 저장된 이미지를 모두 제거한다")
+    func 웹페이지_이미지_디렉터리_삭제는_저장된_이미지를_모두_제거한다() async throws {
+        let store = WebPageImageStoreImpl()
+        try await store.clearDirectory()
+        let firstURL = try #require(URL(string: "https://example.com/first"))
+        let secondURL = try #require(URL(string: "https://example.com/second"))
+
+        _ = try await store.saveImage(Data("first".utf8), for: firstURL)
+        _ = try await store.saveImage(Data("second".utf8), for: secondURL)
+        try await store.clearDirectory()
+
+        let directorySize = await store.dirSizeInBytes()
+        #expect(directorySize == 0)
+    }
+
+    @Test("동시 저장 요청은 요청 순서대로 같은 파일을 갱신한다")
+    func 동시_저장_요청은_요청_순서대로_같은_파일을_갱신한다() async throws {
+        let store = WebPageImageStoreImpl()
+        try await store.clearDirectory()
+        let url = try #require(URL(string: "https://example.com/\(UUID().uuidString)"))
+        let firstData = Data(repeating: 1, count: 64 * 1024 * 1024)
+        let secondData = Data("latest".utf8)
+
+        let firstSaveTask = Task {
+            try await store.saveImage(firstData, for: url)
+        }
+        try await Task.sleep(nanoseconds: 10_000_000)
+        let secondSaveTask = Task {
+            try await store.saveImage(secondData, for: url)
+        }
+
+        _ = try await firstSaveTask.value
+        let fileURL = try await secondSaveTask.value
+        let savedData = try Data(contentsOf: fileURL)
+
+        #expect(savedData == secondData)
+
+        try await store.clearDirectory()
+    }
+}