Add test for what jobs 'all-jobs' references

tests/github-actions.rs

@@ -0,0 +1,53 @@
+#[test]
+fn all_jobs_not_missing_any_jobs() {
+    let yaml: serde_yaml::Value =
+        serde_yaml::from_reader(std::fs::File::open(".github/workflows/CICD.yml").unwrap())
+            .unwrap();
+    let jobs = yaml.get("jobs").unwrap();
+
+    // Get all jobs that all-jobs depends on:
+    //
+    //   jobs:
+    //     all-jobs:
+    //       needs:
+    //         - this
+    //         - list
+    //         - ...
+    let actual = jobs
+        .get("all-jobs")
+        .unwrap()
+        .get("needs")
+        .unwrap()
+        .as_sequence()
+        .unwrap();
+
+    // Get all jobs used in CI, except the ones we want to ignore:
+    //
+    //   jobs:
+    //     this: ...
+    //     list: ...
+    //     ...
+    let exceptions = [
+        "all-jobs", // 'all-jobs' should not reference itself
+        "winget",   // only used when publishing a release
+    ];
+    let expected = jobs
+        .as_mapping()
+        .unwrap()
+        .keys()
+        .filter_map(|k| {
+            if exceptions.contains(&k.as_str().unwrap_or_default()) {
+                None
+            } else {
+                Some(k)
+            }
+        })
+        .map(ToOwned::to_owned)
+        .collect::<Vec<_>>();
+
+    // Make sure they match
+    assert_eq!(
+        *actual, expected,
+        "`all-jobs` should depend on all other jobs"
+    );
+}