Add ImageLoader with improved caching and cancelling

BUG: 339261453
FIX: 339261453
Test: atest CachingImagePreviewImageLoaderTest
Test: atest IntentResolver-tests-activity
Test: manual test using ShareTest
Change-Id: I316a9f683a26f2f6d8599e0da4a45ca3f4e740ab

1 files changed, 36 insertions, 0 deletions

diff --git a/tests/shared/src/com/android/intentresolver/contentpreview/FakeThumbnailLoader.kt b/tests/shared/src/com/android/intentresolver/contentpreview/FakeThumbnailLoader.kt
new file mode 100644
index 00000000..d3fdf17d
--- /dev/null
+++ b/tests/shared/src/com/android/intentresolver/contentpreview/FakeThumbnailLoader.kt
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.intentresolver.contentpreview
+
+import android.graphics.Bitmap
+import android.net.Uri
+
+/** Fake implementation of [ThumbnailLoader] for use in testing. */
+class FakeThumbnailLoader : ThumbnailLoader {
+
+    val fakeInvoke = mutableMapOf<Uri, suspend () -> Bitmap?>()
+    val invokeCalls = mutableListOf<Uri>()
+    var unfinishedInvokeCount = 0
+
+    override suspend fun invoke(uri: Uri): Bitmap? {
+        invokeCalls.add(uri)
+        unfinishedInvokeCount++
+        val result = fakeInvoke[uri]?.invoke()
+        unfinishedInvokeCount--
+        return result
+    }
+}