package test.text import kotlin.* import kotlin.test.* import org.junit.Test as test class StringBuilderJVMTest() { @test fun stringBuildWithInitialCapacity() { val s = buildString(123) { assertEquals(123, capacity()) } } @test fun getAndSetChar() { val sb = StringBuilder("abc") sb[1] = 'z' assertEquals("azc", sb.toString()) assertEquals('c', sb[2]) } }