test: Verify examples based on feature flags

Cargo.toml

@@ -131,10 +131,16 @@ trycmd = { version = "0.8.0", default-features = false, features = ["color-auto"
 [[example]]
 name = "busybox"
 path = "examples/24a_multicall_busybox.rs"
+required-features = ["unstable-multicall"]
 
 [[example]]
 name = "hostname"
 path = "examples/24b_multicall_hostname.rs"
+required-features = ["unstable-multicall"]
+
+[[example]]
+name = "09_cargo_metadata"
+required-features = ["cargo"]
 
 [profile.test]
 opt-level = 1

Makefile

@@ -11,7 +11,7 @@ ifneq (${TOOLCHAIN_TARGET},)
 endif
 
 _FEATURES = minimal default wasm full release
-_FEATURES_minimal = --no-default-features --features "std cargo"
+_FEATURES_minimal = --no-default-features --features "std"
 _FEATURES_default =
 _FEATURES_wasm = --features "yaml regex unstable-replace unstable-multicall unstable-grouped"
 _FEATURES_full = --features "wrap_help yaml regex unstable-replace unstable-multicall unstable-grouped doc"

examples/24a_multicall_busybox.md

@@ -4,7 +4,7 @@ See the documentation for clap::AppSettings::Multicall for rationale.
 
 This example omits every command except true and false,
 which are the most trivial to implement,
-```bash
+```bash,ignore
 $ busybox true
 ? 0
 $ busybox false
@@ -14,14 +14,14 @@ $ busybox false
 
 But includes the `--install` option as an example of why it can be useful
 for the main program to take arguments that aren't applet subcommands.
-```bash
+```bash,ignore
 $ busybox --install
 ? failed
 ...
 ```
 
 Though users must pass something:
-```bash
+```bash,ignore
 $ busybox
 ? failed
 busybox 

examples/24a_multicall_busybox.rs

@@ -17,7 +17,6 @@ fn main() {
         .subcommand(App::new("true").about("does nothing successfully"))
         .subcommand(App::new("false").about("does nothing unsuccessfully"));
 
-    #[cfg(feature = "unstable-multicall")]
     let app = app.setting(AppSettings::Multicall);
     let matches = app.get_matches();
     if matches.occurrences_of("install") > 0 {

examples/24b_multicall_hostname.md

@@ -4,28 +4,8 @@ See the documentation for clap::AppSettings::Multicall for rationale.
 
 This example omits the implementation of displaying address config
 
-```bash
-$ hostname hostname
+```bash,ignore
+$ hostname
 www
-$ hostname dnsdomainname
-example.com
 ```
 *Note: without the links setup, we can't demonostrate the multicall behavior*
-
-Though users must pass something:
-```bash
-$ hostname
-? failed
-hostname 
-
-USAGE:
-    hostname[EXE] [SUBCOMMAND]
-
-OPTIONS:
-    -h, --help    Print help information
-
-SUBCOMMANDS:
-    dnsdomainname    show domain name part of FQDN
-    help             Print this message or the help of the given subcommand(s)
-    hostname         show hostname part of FQDN
-```

examples/24b_multicall_hostname.rs

@@ -6,7 +6,6 @@ fn main() {
         .subcommand(App::new("hostname").about("show hostname part of FQDN"))
         .subcommand(App::new("dnsdomainname").about("show domain name part of FQDN"));
 
-    #[cfg(feature = "unstable-multicall")]
     let app = app.setting(AppSettings::Multicall);
 
     match app.get_matches().subcommand_name() {

tests/examples.rs

@@ -3,7 +3,36 @@
 #[test]
 fn example_tests() {
     let t = trycmd::TestCases::new();
-    t.register_bins(trycmd::cargo::compile_examples([]).unwrap());
+    let features = [
+        #[cfg(feature = "debug")]
+        "debug",
+        #[cfg(feature = "doc")]
+        "doc",
+        #[cfg(feature = "std")]
+        "std",
+        #[cfg(feature = "derive")]
+        "derive",
+        #[cfg(feature = "cargo")]
+        "cargo",
+        #[cfg(feature = "color")]
+        "color",
+        #[cfg(feature = "env")]
+        "env",
+        #[cfg(feature = "suggestions")]
+        "suggestions",
+        #[cfg(feature = "unicode")]
+        "unicode",
+        #[cfg(feature = "wrap_help")]
+        "wrap_help",
+        #[cfg(feature = "unsable-replace")]
+        "unsable-replace",
+        #[cfg(feature = "unsable-multicall")]
+        "unsable-multicall",
+        #[cfg(feature = "unsable-grouped")]
+        "unsable-grouped",
+    ]
+    .join(" ");
+    t.register_bins(trycmd::cargo::compile_examples(["--features", &features]).unwrap());
     t.case("examples/*.md");
     #[cfg(not(feature = "unstable-multicall"))]
     {