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fluent-icons-generator/tasks/IconTestingGenerationTask.kt

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+/*
+ * Copyright 2020 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 androidx.compose.material.icons.generator.tasks
+
+import androidx.compose.material.icons.generator.IconTestingManifestGenerator
+import java.io.File
+import org.gradle.api.Project
+import org.gradle.api.tasks.CacheableTask
+import org.gradle.api.tasks.OutputDirectory
+
+/**
+ * Task responsible for generating files related to testing.
+ *
+ * - Generates a list of all icons mapped to the drawable ID used in testing, so we can bitmap
+ * compare the programmatic icon with the original source drawable.
+ *
+ * - Flattens all the source drawables into a drawable folder that will be used in comparison tests.
+ */
+@CacheableTask
+open class IconTestingGenerationTask : IconGenerationTask() {
+    /**
+     * Directory to generate the flattened drawables used for testing to.
+     */
+    @get:OutputDirectory
+    val drawableDirectory: File
+        get() = generatedResourceDirectory.resolve("drawable")
+
+    override fun run() {
+        // Copy all drawables to the drawable directory
+        loadIcons().forEach { icon ->
+            drawableDirectory.resolve("${icon.xmlFileName}.xml").apply {
+                createNewFile()
+                writeText(icon.fileContent)
+            }
+        }
+
+        // Generate the testing manifest to the androidTest directory
+        IconTestingManifestGenerator(loadIcons()).generateTo(generatedSrcAndroidTestDirectory)
+    }
+
+    companion object {
+        /**
+         * Registers [IconTestingGenerationTask] in [project] for [variant].
+         */
+        @Suppress("DEPRECATION") // BaseVariant
+        fun register(project: Project, variant: com.android.build.gradle.api.BaseVariant) {
+            val (task, buildDirectory) = project.registerGenerationTask(
+                "generateTestFiles",
+                IconTestingGenerationTask::class.java,
+                variant
+            )
+
+            val generatedResourceDirectory = buildDirectory.resolve(GeneratedResource)
+
+            variant.registerGeneratedResFolders(
+                project.files(generatedResourceDirectory).builtBy(task)
+            )
+
+            val generatedSrcAndroidTestDirectory = buildDirectory.resolve(GeneratedSrcAndroidTest)
+            variant.registerJavaGeneratingTask(task, generatedSrcAndroidTestDirectory)
+        }
+    }
+}