docs: fix tests that fail when the "suggestions" feature is disabled

src/errors.rs

@@ -55,7 +55,8 @@ pub enum ErrorKind {
     ///
     /// # Examples
     ///
-    /// ```rust
+    #[cfg_attr(not(feature="suggestions"), doc=" ```no_run")]
+    #[cfg_attr(    feature="suggestions" , doc=" ```")]
     /// # use clap::{App, Arg, ErrorKind, SubCommand};
     /// let result = App::new("myprog")
     ///     .subcommand(SubCommand::with_name("config")

tests/opts.rs

@@ -226,6 +226,7 @@ fn require_delims() {
 }
 
 #[test]
+#[cfg(feature="suggestions")]
 fn did_you_mean() {
     test::check_err_output(test::complex_app(), "clap-test --optio=foo",
 "error: Found argument '--optio' which wasn't expected, or isn't valid in this context

tests/possible_values.rs

@@ -5,11 +5,21 @@ include!("../clap-test.rs");
 
 use clap::{App, Arg, ErrorKind};
 
+#[cfg(feature="suggestions")]
 static PV_ERROR: &'static str = "error: 'slo' isn't a valid value for '--Option <option3>'
 \t[values: fast, slow]
 
 \tDid you mean 'slow'?
 
+USAGE:
+    clap-test --Option <option3>
+
+For more information try --help";
+#[cfg(not(feature="suggestions"))]
+static PV_ERROR: &'static str = "error: 'slo' isn't a valid value for '--Option <option3>'
+\t[values: fast, slow]
+
+
 USAGE:
     clap-test --Option <option3>
 

tests/subcommands.rs

@@ -107,6 +107,7 @@ fn multiple_aliases() {
 }
 
 #[test]
+#[cfg(feature="suggestions")]
 fn subcmd_did_you_mean_output() {
     test::check_err_output(test::complex_app(), "clap-test subcm",
 "error: The subcommand 'subcm' wasn't recognized