refactor(tests): share array completion oracle

Author: doodlewind

tests/oracle_array_methods.rs

@@ -1,9 +1,11 @@
 // Keep the Array-method oracle implementations in separate modules so their
 // private helpers remain isolated while Cargo builds one integration target.
 
+#[path = "support/quickjs_completion.rs"]
+mod quickjs_completion;
+
 mod support {
     use std::ffi::OsStr;
-    use std::process::Command;
 
     use quickjs_oxide::{
         CallableRef, CompleteOrdinaryPropertyDescriptor, Context, ObjectRef, Runtime, RuntimeError,
@@ -64,32 +66,7 @@ mod support {
     }
 
     pub(super) fn observe_oracle(oracle: &OsStr, source: &str, description: &str) -> String {
-        let wrapper = r#"
-try {
-  var value = std.evalScript(scriptArgs[0]);
-  print('return|' + typeof value + '|' + String(value));
-} catch (error) {
-  if (error !== null && typeof error === 'object')
-    print('throw|object|' + error.name + '|' + error.message);
-  else
-    print('throw|' + typeof error + '|' + String(error));
-}
-"#;
-        let output = Command::new(oracle)
-            .args(["--std", "-e", wrapper, source])
-            .output()
-            .unwrap_or_else(|error| panic!("could not run QuickJS for {description}: {error}"));
-        assert!(
-            output.status.success(),
-            "QuickJS observer failed for {description}: {}",
-            String::from_utf8_lossy(&output.stderr),
-        );
-        String::from_utf8(output.stdout)
-            .unwrap_or_else(|error| {
-                panic!("QuickJS output was not UTF-8 for {description}: {error}")
-            })
-            .trim_end()
-            .to_owned()
+        super::quickjs_completion::observe(oracle, source, description)
     }
 
     pub(super) fn data_descriptor_bits(descriptor: &CompleteOrdinaryPropertyDescriptor) -> String {