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Added fake coil image loader and updated tests to use (slackhq#85)
Adding a fake image loader for instrumentation. This replaces use of the fallback property on ImageLoader.Builder. Related to slackhq#9
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sample/src/androidTest/kotlin/com/slack/circuit/sample/FakeImageLoader.kt
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|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| /* | ||
| * Copyright (C) 2022 Slack Technologies, LLC | ||
| * | ||
| * 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 | ||
| * | ||
| * https://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.slack.circuit.sample | ||
|
|
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| import android.content.Context | ||
| import android.graphics.drawable.Drawable | ||
| import androidx.annotation.DrawableRes | ||
| import coil.ComponentRegistry | ||
| import coil.ImageLoader | ||
| import coil.decode.DataSource | ||
| import coil.disk.DiskCache | ||
| import coil.memory.MemoryCache | ||
| import coil.request.DefaultRequestOptions | ||
| import coil.request.Disposable | ||
| import coil.request.ImageRequest | ||
| import coil.request.ImageResult | ||
| import coil.request.SuccessResult | ||
| import kotlinx.coroutines.CompletableDeferred | ||
|
|
||
| /** | ||
| * Fake Coil ImageLoader based on example found here: | ||
| * https://coil-kt.github.io/coil/image_loaders/#testing | ||
| */ | ||
| class FakeImageLoader( | ||
| context: Context, | ||
| @DrawableRes drawableResId: Int, | ||
| ) : ImageLoader { | ||
| private val drawable by lazy { | ||
| context.getDrawable(drawableResId) ?: throw IllegalArgumentException("drawable not found!") | ||
| } | ||
|
|
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| override val defaults = DefaultRequestOptions() | ||
| override val components = ComponentRegistry() | ||
| override val memoryCache: MemoryCache? | ||
| get() = null | ||
| override val diskCache: DiskCache? | ||
| get() = null | ||
|
|
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| override fun enqueue(request: ImageRequest): Disposable { | ||
| request.target?.onStart(request.placeholder) | ||
| request.target?.onSuccess(drawable) | ||
|
|
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| return object : Disposable { | ||
| override val job = CompletableDeferred(newResult(request, drawable)) | ||
| override val isDisposed | ||
| get() = true | ||
| override fun dispose() = Unit | ||
| } | ||
| } | ||
|
|
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| override suspend fun execute(request: ImageRequest): ImageResult = newResult(request, drawable) | ||
|
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| private fun newResult(request: ImageRequest, drawable: Drawable): SuccessResult { | ||
| return SuccessResult( | ||
| drawable = drawable, | ||
| request = request, | ||
| dataSource = DataSource.MEMORY_CACHE | ||
| ) | ||
| } | ||
|
|
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| override fun newBuilder() = throw UnsupportedOperationException() | ||
|
|
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| override fun shutdown() = Unit | ||
| } |
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