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diff --git a/vendor/proptest/examples/tutorial-strategy-play.rs b/vendor/proptest/examples/tutorial-strategy-play.rs
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+//-
+// Copyright 2017 Jason Lingle
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Shows how to pick values from a strategy.
+//
+// This is *not* how proptest is normally used; it is simply used to play
+// around with value generation.
+
+use proptest::strategy::{Strategy, ValueTree};
+use proptest::test_runner::TestRunner;
+
+fn main() {
+ let mut runner = TestRunner::default();
+ let int_val = (0..100i32).new_tree(&mut runner).unwrap();
+ let str_val = "[a-z]{1,4}\\p{Cyrillic}{1,4}\\p{Greek}{1,4}"
+ .new_tree(&mut runner)
+ .unwrap();
+ println!(
+ "int_val = {}, str_val = {}",
+ int_val.current(),
+ str_val.current()
+ );
+}