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-rw-r--r--tests/rustdoc/playground-arg.rs13
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+// compile-flags: --playground-url=https://example.com/ -Z unstable-options
+
+#![crate_name = "foo"]
+
+//! ```
+//! use foo::dummy;
+//! dummy();
+//! ```
+
+pub fn dummy() {}
+
+// ensure that `extern crate foo;` was inserted into code snips automatically:
+// @matches foo/index.html '//a[@class="test-arrow"][@href="https://example.com/?code=%23!%5Ballow(unused)%5D%0Aextern%20crate%20r%23foo%3B%0Afn%20main()%20%7B%0Ause%20foo%3A%3Adummy%3B%0Adummy()%3B%0A%7D&edition=2015"]' "Run"