taler-android

Android apps for GNU Taler (wallet, PoS, cashier)
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TestUtils.kt (1340B)

      1 /*
      2  * This file is part of GNU Taler
      3  * (C) 2020 Taler Systems S.A.
      4  *
      5  * GNU Taler is free software; you can redistribute it and/or modify it under the
      6  * terms of the GNU General Public License as published by the Free Software
      7  * Foundation; either version 3, or (at your option) any later version.
      8  *
      9  * GNU Taler is distributed in the hope that it will be useful, but WITHOUT ANY
     10  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
     11  * A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
     12  *
     13  * You should have received a copy of the GNU General Public License along with
     14  * GNU Taler; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
     15  */
     16 
     17 package net.taler.common
     18 
     19 import kotlin.random.Random
     20 import org.junit.Assert.assertTrue
     21 import org.junit.Assert.fail
     22 
     23 private val charPool: List<Char> = ('a'..'z') + ('A'..'Z') + ('0'..'9')
     24 fun getRandomString(minLength: Int = 1, maxLength: Int = Random.nextInt(0, 1337)) =
     25     (minLength..maxLength)
     26         .map { Random.nextInt(0, charPool.size) }
     27         .map(charPool::get)
     28         .joinToString("")
     29 
     30 inline fun <reified T : Throwable> assertThrows(
     31     msg: String? = null,
     32     function: () -> Any
     33 ) {
     34     try {
     35         function.invoke()
     36         fail(msg)
     37     } catch (e: Exception) {
     38         assertTrue(e is T)
     39     }
     40 }