Convert remaining Java files to Kotlin

rsdroid-instrumented/build.gradle

@@ -15,6 +15,7 @@
  */
 
 apply plugin: 'com.android.application'
+apply plugin: "kotlin-android"
 
 android {
     namespace 'net.ankiweb.rsdroid.instrumented'
@@ -40,6 +41,10 @@ android {
         sourceCompatibility JavaVersion.VERSION_11
         targetCompatibility JavaVersion.VERSION_11
     }
+
+    kotlinOptions {
+        jvmTarget = '11'
+    }
 }
 
 

rsdroid-instrumented/src/androidTest/java/net/ankiweb/rsdroid/BackendDisposalTests.kt

@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2020 David Allison <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package net.ankiweb.rsdroid
+
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import net.ankiweb.rsdroid.ankiutil.DatabaseUtil.queryScalar
+import net.ankiweb.rsdroid.ankiutil.InstrumentedTest
+import net.ankiweb.rsdroid.database.AnkiSupportSQLiteDatabase.Companion.withRustBackend
+import org.junit.Ignore
+import org.junit.Test
+import org.junit.runner.RunWith
+import timber.log.Timber
+import java.io.IOException
+
+@RunWith(AndroidJUnit4::class)
+class BackendDisposalTests : InstrumentedTest() {
+    /** This test should be run under the profiler  */
+    @Test
+    @Ignore("Run under profiler")
+    @Throws(IOException::class)
+    fun testDisposalDoesNotLeak() {
+        for (i in 0..9999) {
+            Timber.d("Iteration %d", i)
+            super.getBackend("initial_version_2_12_1.anki2").use { backend ->
+                val db = withRustBackend(backend)
+                queryScalar(db, "select count(*) from revlog")
+            }
+        }
+    }
+
+    @Test
+    @Ignore
+    fun getAssetFilePathFileLeak() {
+        // testDisposalDoesNotLeak had a failure: open failed: EMFILE (Too many open files)
+        // This determines if it is our file handling, or rust implementation which has the issue.
+        for (i in 0..9999) {
+            getAssetFilePath("initial_version_2_12_1.anki2")
+        }
+    }
+
+}

rsdroid-instrumented/src/androidTest/java/net/ankiweb/rsdroid/BackendForTesting.kt

@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 2021 David Allison <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ * PARTICULAR PURPOSE. See the GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package net.ankiweb.rsdroid
+
+import androidx.annotation.VisibleForTesting
+
+class BackendForTesting(langs: Iterable<String>) : Backend(langs) {
+    // Debug methods
+    /**
+     * Throws a given error, generated from the Rust
+     * @param error The error to throw
+     */
+    @VisibleForTesting
+    fun debugProduceError(error: ErrorType) {
+        super.debugProduceError(error.toString())
+        throw IllegalStateException("An exception should have been thrown")
+    }
+
+    enum class ErrorType {
+        InvalidInput, TemplateError, DbErrorFileTooNew, DbErrorFileTooOld, DbErrorMissingEntity, DbErrorCorrupt, DbErrorLocked, DbErrorOther, NetworkError, SyncErrorAuthFailed, SyncErrorOther, JSONError, ProtoError, Interrupted, CollectionNotOpen, CollectionAlreadyOpen, NotFound, Existing, FilteredDeckError, SearchError, FatalError
+    }
+
+    companion object {
+        fun create(): BackendForTesting {
+            System.loadLibrary("rsdroid")
+            return BackendForTesting(mutableListOf("en"))
+        }
+    }
+}