Test framework for inline

compiler/testData/codegen/boxInline/forEachLine/2.kt

@@ -0,0 +1,20 @@
+package test
+
+public class Input(val s1: String, val s2: String) {
+    public fun iterator() : Iterator<String> {
+        return arrayListOf(s1, s2).iterator()
+    }
+}
+
+public inline fun <T, R> T.use(block: (T)-> R) : R {
+    return block(this)
+}
+
+public inline fun Input.forEachLine(block: (String) -> Unit): Unit {
+    useLines { lines -> lines.forEach(block) }
+}
+
+public inline fun Input.useLines(block2: (Iterator<String>) -> Unit): Unit {
+        this.use{ block2(it.iterator()) }
+}
+