Fix features table check as of 1.60.

As part of namespaced features, optional dependencies now appear
as a feature in the features table: rust-lang/cargo#10269

Author: ehuss

tests/test_samples.rs

@@ -158,7 +158,7 @@ struct TestObject {
 
 #[test]
 fn all_the_fields() {
-    // All the fields currently generated as of 1.58. This tries to exercise as
+    // All the fields currently generated as of 1.60. This tries to exercise as
     // much as possible.
     let ver = cargo_version();
     let minimum = semver::Version::parse("1.56.0").unwrap();
@@ -332,7 +332,13 @@ fn all_the_fields() {
     let build = get_file_name!("build.rs");
     assert_eq!(build.kind, vec!["custom-build"]);
 
-    assert_eq!(all.features.len(), 3);
+    if ver >= semver::Version::parse("1.60.0").unwrap() {
+        // 1.60 now reports optional dependencies within the features table
+        assert_eq!(all.features.len(), 4);
+        assert_eq!(all.features["bitflags"], vec!["dep:bitflags"]);
+    } else {
+        assert_eq!(all.features.len(), 3);
+    }
     assert_eq!(all.features["feat1"].len(), 0);
     assert_eq!(all.features["feat2"].len(), 0);
     assert_eq!(sorted!(all.features["default"]), vec!["bitflags", "feat1"]);