backend/tests: add cast_null and unchecked_cast3

2017-01-23 11:04:42 +07:00
parent ef6c5364a6
commit 16ca882298
3 changed files with 93 additions and 0 deletions
@@ -0,0 +1,48 @@
+fun main(args: Array<String>) {
+    testCast(null, false)
+    testCastToNullable(null, true)
+    testCastToNullable(Test(), true)
+    testCastToNullable("", false)
+    testCastNotNullableToNullable(Test(), true)
+    testCastNotNullableToNullable("", false)
+
+    println("Ok")
+}
+
+class Test
+
+fun ensure(b: Boolean) {
+    if (!b) {
+        println("Error")
+    }
+}
+
+fun testCast(x: Any?, expectSuccess: Boolean) {
+    try {
+        x as Test
+    } catch (e: Throwable) {
+        ensure(!expectSuccess)
+        return
+    }
+    ensure(expectSuccess)
+}
+
+fun testCastToNullable(x: Any?, expectSuccess: Boolean) {
+    try {
+        x as Test?
+    } catch (e: Throwable) {
+        ensure(!expectSuccess)
+        return
+    }
+    ensure(expectSuccess)
+}
+
+fun testCastNotNullableToNullable(x: Any, expectSuccess: Boolean) {
+    try {
+        x as Test?
+    } catch (e: Throwable) {
+        ensure(!expectSuccess)
+        return
+    }
+    ensure(expectSuccess)
+}