Added tests for verifying BOMs

"PatchedCallback" and "DatabaseOpenHelperFactoryKt.patchConfiguration" interact with the inner classes of "SupportSQLiteOpenHelper" in a way that is prone to introducing bugs due to unnoticed changes to those classes.
The tests introduced by this commit ensure that changes to the bills of materials for those classes are noticed and handled in the future.

data/src/androidTest/java/org/cryptomator/data/db/DatabaseOpenHelperFactoryTest.kt

@@ -0,0 +1,86 @@
+package org.cryptomator.data.db
+
+import androidx.sqlite.db.SupportSQLiteOpenHelper
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import androidx.test.filters.SmallTest
+import org.junit.Assert.assertEquals
+import org.junit.Test
+import org.junit.runner.RunWith
+import java.lang.reflect.Field
+import java.lang.reflect.Method
+
+@RunWith(AndroidJUnit4::class)
+@SmallTest
+class DatabaseOpenHelperFactoryTest {
+
+	@Test //For org.cryptomator.data.db.PatchedCallback
+	fun verifySupportSQLiteOpenHelperCallback() {
+		val bom = setOf(
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Callback.version: int",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Callback.onConfigure(androidx.sqlite.db.SupportSQLiteDatabase): void",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Callback.onCorruption(androidx.sqlite.db.SupportSQLiteDatabase): void",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Callback.onCreate(androidx.sqlite.db.SupportSQLiteDatabase): void",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Callback.onDowngrade(androidx.sqlite.db.SupportSQLiteDatabase, int, int): void",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Callback.onOpen(androidx.sqlite.db.SupportSQLiteDatabase): void",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Callback.onUpgrade(androidx.sqlite.db.SupportSQLiteDatabase, int, int): void",
+			//
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Callback.Companion: androidx.sqlite.db.SupportSQLiteOpenHelper#Callback#Companion"
+		)
+		assertEquals(bom, SupportSQLiteOpenHelper.Callback::class.java.getFieldAndMethodNames())
+	}
+
+	@Test //For org.cryptomator.data.db.DatabaseOpenHelperFactoryKt.patchConfiguration
+	fun verifySupportSQLiteOpenHelperConfiguration() {
+		val bom = setOf(
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration.allowDataLossOnRecovery: boolean",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration.callback: androidx.sqlite.db.SupportSQLiteOpenHelper#Callback",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration.context: android.content.Context",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration.name: java.lang.String",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration.useNoBackupDirectory: boolean",
+			//
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration.Companion: androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Companion",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration.builder(android.content.Context): androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder"
+		)
+		assertEquals(bom, SupportSQLiteOpenHelper.Configuration::class.java.getFieldAndMethodNames())
+	}
+
+	@Test //For org.cryptomator.data.db.DatabaseOpenHelperFactoryKt.patchConfiguration
+	fun verifySupportSQLiteOpenHelperConfigurationBuilder() {
+		val bom = setOf(
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder.allowDataLossOnRecovery(boolean): androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder.callback(androidx.sqlite.db.SupportSQLiteOpenHelper#Callback): androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder.name(java.lang.String): androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder",
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder.noBackupDirectory(boolean): androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder",
+			//
+			"androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration#Builder.build(): androidx.sqlite.db.SupportSQLiteOpenHelper#Configuration"
+		)
+		assertEquals(bom, SupportSQLiteOpenHelper.Configuration.Builder::class.java.getFieldAndMethodNames())
+	}
+}
+
+private val DEFAULT_MEMBERS = setOf(
+	"java.lang.Object.equals(java.lang.Object): boolean",
+	"java.lang.Object.getClass(): java.lang.Class",
+	"java.lang.Object.hashCode(): int",
+	"java.lang.Object.notify(): void",
+	"java.lang.Object.notifyAll(): void",
+	"java.lang.Object.toString(): java.lang.String",
+	"java.lang.Object.wait(): void",
+	"java.lang.Object.wait(long): void",
+	"java.lang.Object.wait(long, int): void"
+)
+
+private fun Class<*>.getFieldAndMethodNames(): Set<String> {
+	val fieldsSequence = fields.asSequence().map { it.signature }
+	val methodsSequence = methods.asSequence().map { it.signature }
+	return (fieldsSequence + methodsSequence - DEFAULT_MEMBERS).toSet()
+}
+
+private val Field.signature: String
+	get() = "${declaringClass.name}.$name: ${type.name}".replace('$', '#')
+
+private val Method.signature: String
+	get() {
+		val parameters = parameterTypes.asSequence().map { it.name }.joinToString(", ")
+		return "${declaringClass.name}.$name($parameters): ${returnType.name}".replace('$', '#')
+	}