Add argument validation in copyOf(newSize) in JS

#KT-19489
2018-08-04 01:27:34 +03:00
parent 93540e476e
commit 58a3b64baf
3 changed files with 28 additions and 1 deletions
@@ -724,6 +724,17 @@ class ArraysTest {

        assertArrayNotSameButEquals(charArrayOf('A', 'B'), charArrayOf('A', 'B', 'C').copyOf(2))
        assertArrayNotSameButEquals(charArrayOf('A', 'B', '\u0000'), charArrayOf('A', 'B').copyOf(3))
+
+        assertArrayNotSameButEquals(emptyArray(), arrayOf("x").copyOf(0))
+        assertArrayNotSameButEquals(intArrayOf(), intArrayOf(1).copyOf(0))
+        assertArrayNotSameButEquals(longArrayOf(), longArrayOf(1).copyOf(0))
+        assertArrayNotSameButEquals(charArrayOf(), charArrayOf('a').copyOf(0))
+
+        // RuntimeException is the most specific common of JVM and JS implementations
+        assertFailsWith<RuntimeException> { arrayOf("x").copyOf(-1) }
+        assertFailsWith<RuntimeException> { intArrayOf().copyOf(-1) }
+        assertFailsWith<RuntimeException> { longArrayOf().copyOf(-1) }
+        assertFailsWith<RuntimeException> { charArrayOf('c').copyOf(-1) }
    }

    @Test fun copyOfRange() {