add tests I forgot to add

Author: nikomatsakis

src/test/compile-fail/block-arg-used-as-lambda-with-illegal-cap.rs

@@ -0,0 +1,12 @@
+// error-pattern: copying a noncopyable value
+
+fn to_lambda1(f: lambda(uint) -> uint) -> lambda(uint) -> uint {
+    ret f;
+}
+
+fn to_lambda2(b: block(uint) -> uint) -> lambda(uint) -> uint {
+    ret to_lambda1({|x| b(x)});
+}
+
+fn main() {
+}

src/test/run-pass/block-arg-used-as-lambda.rs

@@ -0,0 +1,14 @@
+fn to_lambda(f: lambda(uint) -> uint) -> lambda(uint) -> uint {
+    ret f;
+}
+
+fn main() {
+    let x: lambda(uint) -> uint = to_lambda({ |x| x * 2u });
+    let y = to_lambda(x);
+
+    let x_r = x(22u);
+    let y_r = y(x_r);
+
+    assert x_r == 44u;
+    assert y_r == 88u;
+}