Add some data flow analysis tests on when

2018-06-08 11:29:27 +03:00
parent ae929d0f08
commit 148d03e365
10 changed files with 213 additions and 0 deletions
@@ -0,0 +1,37 @@
+// !LANGUAGE: +VariableDeclarationInWhenSubject
+// !DIAGNOSTICS: -UNUSED_VARIABLE
+
+fun getBoolean() = true
+
+fun testSafeCaptureVarInInitializer() {
+    var x: Int? = 42
+    x!!
+    <!DEBUG_INFO_SMARTCAST!>x<!>.inc()
+
+    val s = when (val y = run { x = 42; 32 }) {
+        0 -> {
+            <!SMARTCAST_IMPOSSIBLE!>x<!>.inc() // TODO fix smart casts for captured variables
+            "0"
+        }
+        else -> "!= 0"
+    }
+
+    <!SMARTCAST_IMPOSSIBLE!>x<!>.inc() // TODO fix smart casts for captured variables
+}
+
+
+fun testUnsafeCaptureVarInInitializer() {
+    var x: Int? = 42
+    x!!
+    <!DEBUG_INFO_SMARTCAST!>x<!>.inc()
+
+    val s = when (val y = run { x = null; 32 }) {
+        0 -> {
+            <!SMARTCAST_IMPOSSIBLE!>x<!>.inc() // NB smart cast should be impossible
+            "0"
+        }
+        else -> "!= 0"
+    }
+
+    <!SMARTCAST_IMPOSSIBLE!>x<!>.inc() // NB smart cast should be impossible
+}