refactor(transform_conformance): correctly handle BABEL_8_BREAKING

tasks/transform_conformance/babel.snap.md

@@ -1,4 +1,4 @@
-Passed: 94/228
+Passed: 93/227
 
 # All Passed:
 * babel-plugin-transform-react-jsx-source
@@ -137,7 +137,7 @@ Passed: 94/228
 * regression/another-preset-with-custom-jsx-keep-source-self/input.mjs
 * regression/runtime-classic-allow-multiple-source-self/input.mjs
 
-# babel-plugin-transform-react-jsx (34/37)
+# babel-plugin-transform-react-jsx (33/36)
 * autoImport/auto-import-react-source-type-module/input.js
 * autoImport/complicated-scope-module/input.js
 * autoImport/react-defined/input.js

tasks/transform_conformance/src/test_case.rs

@@ -131,24 +131,16 @@ pub trait TestCase {
             return true;
         }
 
-        let dir = self.path().parent().unwrap();
-        // Skip Babel 7 specific tests
-        // https://github.com/babel/babel/issues/10746
-        // We implement Babel 8 breaking changes under the BABEL_8_BREAKING env flag.
-        // To test the breaking changes, please duplicate the affected tests with the -babel-7 suffix and add BABEL_8_BREAKING: false to test options.
-        if dir
-            .file_name()
-            .is_some_and(|file_name| file_name.to_string_lossy().ends_with("-babel-7"))
-        {
-            return true;
-        }
-
-        // Skip deprecated react options
-        if options.babel_8_breaking.is_some_and(|b| b) {
-            if let Ok(options) = self.transform_options() {
-                if options.react.use_built_ins.is_some() || options.react.use_spread.is_some() {
+        if let Some(b) = options.babel_8_breaking {
+            if b {
+                // Skip deprecated react options
+                if self.transform_options().as_ref().is_ok_and(|options| {
+                    options.react.use_built_ins.is_some() || options.react.use_spread.is_some()
+                }) {
                     return true;
                 }
+            } else {
+                return true;
             }
         }
 
@@ -166,6 +158,7 @@ pub trait TestCase {
 
         // babel skip test cases that in a directory starting with a dot
         // https://github.com/babel/babel/blob/0effd92d886b7135469d23612ceba6414c721673/packages/babel-helper-fixtures/src/index.ts#L223
+        let dir = self.path().parent().unwrap();
         if dir.file_name().is_some_and(|n| n.to_string_lossy().starts_with('.')) {
             return true;
         }