src: support namespace options in configuration

doc/api/cli.md

@@ -933,11 +933,19 @@ in the `$schema` must be replaced with the version of Node.js you are using.
     ],
     "watch-path": "src",
     "watch-preserve-output": true
+  },
+  "testRunner": {
+    "test-isolation": "process"
   }
 }
 ```
 
-In the `nodeOptions` field, only flags that are allowed in [`NODE_OPTIONS`][] are supported.
+The configuration file supports namespace-specific options:
+
+* The `nodeOptions` field contains CLI flags that are allowed in [`NODE_OPTIONS`][].
+
+* Namespace fields like `testRunner` contain configuration specific to that subsystem.
+
 No-op flags are not supported.
 Not all V8 flags are currently supported.
 
@@ -951,7 +959,7 @@ For example, the configuration file above is equivalent to
 the following command-line arguments:
 
 ```bash
-node --import amaro/strip --watch-path=src --watch-preserve-output
+node --import amaro/strip --watch-path=src --watch-preserve-output --test-isolation=process
 ```
 
 The priority in configuration is as follows:
@@ -964,11 +972,10 @@ Values in the configuration file will not override the values in the environment
 variables and command-line options, but will override the values in the `NODE_OPTIONS`
 env file parsed by the `--env-file` flag.
 
-If duplicate keys are present in the configuration file, only
-the first key will be used.
+Keys cannot be duplicated within the same or different namespaces.
 
 The configuration parser will throw an error if the configuration file contains
-unknown keys or keys that cannot used in `NODE_OPTIONS`.
+unknown keys or keys that cannot be used in a namespace.
 
 Node.js will not sanitize or perform validation on the user-provided configuration,
 so **NEVER** use untrusted configuration files.

doc/node-config-schema.json

@@ -584,6 +584,135 @@
         }
       },
       "type": "object"
+    },
+    "testRunner": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "experimental-test-coverage": {
+          "type": "boolean"
+        },
+        "experimental-test-module-mocks": {
+          "type": "boolean"
+        },
+        "test-concurrency": {
+          "type": "number"
+        },
+        "test-coverage-branches": {
+          "type": "number"
+        },
+        "test-coverage-exclude": {
+          "oneOf": [
+            {
+              "type": "string"
+            },
+            {
+              "items": {
+                "type": "string",
+                "minItems": 1
+              },
+              "type": "array"
+            }
+          ]
+        },
+        "test-coverage-functions": {
+          "type": "number"
+        },
+        "test-coverage-include": {
+          "oneOf": [
+            {
+              "type": "string"
+            },
+            {
+              "items": {
+                "type": "string",
+                "minItems": 1
+              },
+              "type": "array"
+            }
+          ]
+        },
+        "test-coverage-lines": {
+          "type": "number"
+        },
+        "test-force-exit": {
+          "type": "boolean"
+        },
+        "test-global-setup": {
+          "type": "string"
+        },
+        "test-isolation": {
+          "type": "string"
+        },
+        "test-name-pattern": {
+          "oneOf": [
+            {
+              "type": "string"
+            },
+            {
+              "items": {
+                "type": "string",
+                "minItems": 1
+              },
+              "type": "array"
+            }
+          ]
+        },
+        "test-only": {
+          "type": "boolean"
+        },
+        "test-reporter": {
+          "oneOf": [
+            {
+              "type": "string"
+            },
+            {
+              "items": {
+                "type": "string",
+                "minItems": 1
+              },
+              "type": "array"
+            }
+          ]
+        },
+        "test-reporter-destination": {
+          "oneOf": [
+            {
+              "type": "string"
+            },
+            {
+              "items": {
+                "type": "string",
+                "minItems": 1
+              },
+              "type": "array"
+            }
+          ]
+        },
+        "test-shard": {
+          "type": "string"
+        },
+        "test-skip-pattern": {
+          "oneOf": [
+            {
+              "type": "string"
+            },
+            {
+              "items": {
+                "type": "string",
+                "minItems": 1
+              },
+              "type": "array"
+            }
+          ]
+        },
+        "test-timeout": {
+          "type": "number"
+        },
+        "test-update-snapshots": {
+          "type": "boolean"
+        }
+      }
     }
   },
   "type": "object"

lib/internal/options.js

@@ -13,6 +13,7 @@ const {
   getCLIOptionsInfo,
   getEmbedderOptions: getEmbedderOptionsFromBinding,
   getEnvOptionsInputType,
+  getNamespaceOptionsInputType,
 } = internalBinding('options');
 
 let warnOnAllowUnauthorized = true;
@@ -38,7 +39,22 @@ function getEmbedderOptions() {
 }
 
 function generateConfigJsonSchema() {
-  const map = getEnvOptionsInputType();
+  const envOptionsMap = getEnvOptionsInputType();
+  const namespaceOptionsMap = getNamespaceOptionsInputType();
+
+  function createPropertyForType(type) {
+    if (type === 'array') {
+      return {
+        __proto__: null,
+        oneOf: [
+          { __proto__: null, type: 'string' },
+          { __proto__: null, items: { __proto__: null, type: 'string', minItems: 1 }, type: 'array' },
+        ],
+      };
+    }
+
+    return { __proto__: null, type };
+  }
 
   const schema = {
     __proto__: null,
@@ -60,31 +76,58 @@ function generateConfigJsonSchema() {
     type: 'object',
   };
 
-  const nodeOptions = schema.properties.nodeOptions.properties;
+  // Get the root properties object for adding namespaces
+  const rootProperties = schema.properties;
+  const nodeOptions = rootProperties.nodeOptions.properties;
 
-  for (const { 0: key, 1: type } of map) {
+  // Add env options to nodeOptions (backward compatibility)
+  for (const { 0: key, 1: type } of envOptionsMap) {
     const keyWithoutPrefix = StringPrototypeReplace(key, '--', '');
-    if (type === 'array') {
-      nodeOptions[keyWithoutPrefix] = {
-        __proto__: null,
-        oneOf: [
-          { __proto__: null, type: 'string' },
-          { __proto__: null, items: { __proto__: null, type: 'string', minItems: 1 }, type: 'array' },
-        ],
-      };
-    } else {
-      nodeOptions[keyWithoutPrefix] = { __proto__: null, type };
+    nodeOptions[keyWithoutPrefix] = createPropertyForType(type);
+  }
+
+  // Add namespace properties at the root level
+  for (const { 0: namespace, 1: optionsMap } of namespaceOptionsMap) {
+    // Create namespace object at the root level
+    rootProperties[namespace] = {
+      __proto__: null,
+      type: 'object',
+      additionalProperties: false,
+      properties: { __proto__: null },
+    };
+
+    const namespaceProperties = rootProperties[namespace].properties;
+
+    // Add all options for this namespace
+    for (const { 0: optionName, 1: optionType } of optionsMap) {
+      const keyWithoutPrefix = StringPrototypeReplace(optionName, '--', '');
+      namespaceProperties[keyWithoutPrefix] = createPropertyForType(optionType);
     }
+
+    // Sort the namespace properties alphabetically
+    const sortedNamespaceKeys = ArrayPrototypeSort(ObjectKeys(namespaceProperties));
+    const sortedNamespaceProperties = ObjectFromEntries(
+      ArrayPrototypeMap(sortedNamespaceKeys, (key) => [key, namespaceProperties[key]]),
+    );
+    rootProperties[namespace].properties = sortedNamespaceProperties;
   }
 
-  // Sort the proerties by key alphabetically.
+  // Sort the top-level properties by key alphabetically
   const sortedKeys = ArrayPrototypeSort(ObjectKeys(nodeOptions));
   const sortedProperties = ObjectFromEntries(
     ArrayPrototypeMap(sortedKeys, (key) => [key, nodeOptions[key]]),
   );
 
   schema.properties.nodeOptions.properties = sortedProperties;
 
+  // Also sort the root level properties
+  const sortedRootKeys = ArrayPrototypeSort(ObjectKeys(rootProperties));
+  const sortedRootProperties = ObjectFromEntries(
+    ArrayPrototypeMap(sortedRootKeys, (key) => [key, rootProperties[key]]),
+  );
+
+  schema.properties = sortedRootProperties;
+
   return schema;
 }
 

lib/internal/test_runner/runner.js

@@ -98,7 +98,13 @@ let debug = require('internal/util/debuglog').debuglog('test_runner', (fn) => {
 });
 
 const kIsolatedProcessName = Symbol('kIsolatedProcessName');
-const kFilterArgs = ['--test', '--experimental-test-coverage', '--watch'];
+const kFilterArgs = [
+  '--test',
+  '--experimental-test-coverage',
+  '--watch',
+  '--experimental-default-config-file',
+  '--experimental-config-file',
+];
 const kFilterArgValues = ['--test-reporter', '--test-reporter-destination'];
 const kDiagnosticsFilterArgs = ['tests', 'suites', 'pass', 'fail', 'cancelled', 'skipped', 'todo', 'duration_ms'];
 

src/node.cc

@@ -910,7 +910,7 @@ static ExitCode InitializeNodeWithArgsInternal(
       default:
         UNREACHABLE();
     }
-    node_options_from_config = per_process::config_reader.AssignNodeOptions();
+    node_options_from_config = per_process::config_reader.GetNodeOptions();
     // (@marco-ippolito) Avoid reparsing the env options again
     std::vector<std::string> env_argv_from_config =
         ParseNodeOptionsEnvVar(node_options_from_config, errors);
@@ -956,7 +956,19 @@ static ExitCode InitializeNodeWithArgsInternal(
 #endif
 
   if (!(flags & ProcessInitializationFlags::kDisableCLIOptions)) {
-    const ExitCode exit_code =
+    // Parse the options coming from the config file.
+    // This is done before parsing the command line options
+    // as the cli flags are expected to override the config file ones.
+    std::vector<std::string> extra_argv =
+        per_process::config_reader.GetNamespaceFlags();
+    // [0] is expected to be the program name, fill it in from the real argv.
+    extra_argv.insert(extra_argv.begin(), argv->at(0));
+    // Parse the extra argv coming from the config file
+    ExitCode exit_code = ProcessGlobalArgsInternal(
+        &extra_argv, nullptr, errors, kDisallowedInEnvvar);
+    if (exit_code != ExitCode::kNoFailure) return exit_code;
+    // Parse options coming from the command line.
+    exit_code =
         ProcessGlobalArgsInternal(argv, exec_argv, errors, kDisallowedInEnvvar);
     if (exit_code != ExitCode::kNoFailure) return exit_code;
   }