JSON-schema-based profile conditions (#730)

* Add ProfileConditions class

* Add URL to VM

* Add new ProfileConditions tests

2 files changed, 868 insertions, 0 deletions

diff --git a/test/test-profile-conditions.js b/test/test-profile-conditions.js
new file mode 100644
index 00000000..ce26cbb4
--- /dev/null
+++ b/test/test-profile-conditions.js
@@ -0,0 +1,847 @@
+/*
+ * Copyright (C) 2020  Yomichan Authors
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+const assert = require('assert');
+const {VM} = require('./yomichan-vm');
+
+
+const vm = new VM({});
+vm.execute([
+    'mixed/js/core.js',
+    'mixed/js/cache-map.js',
+    'bg/js/json-schema.js',
+    'bg/js/profile-conditions2.js'
+]);
+const [JsonSchema, ProfileConditions] = vm.get(['JsonSchema', 'ProfileConditions']);
+
+
+function schemaValidate(value, schema) {
+    try {
+        JsonSchema.validate(value, schema);
+        return true;
+    } catch (e) {
+        return false;
+    }
+}
+
+
+function testNormalizeContext() {
+    const data = [
+        // Empty
+        {
+            context: {},
+            expected: {}
+        },
+
+        // Domain normalization
+        {
+            context: {url: ''},
+            expected: {url: ''}
+        },
+        {
+            context: {url: 'http://example.com/'},
+            expected: {url: 'http://example.com/', domain: 'example.com'}
+        },
+        {
+            context: {url: 'http://example.com:1234/'},
+            expected: {url: 'http://example.com:1234/', domain: 'example.com'}
+        },
+        {
+            context: {url: 'http://user@example.com:1234/'},
+            expected: {url: 'http://user@example.com:1234/', domain: 'example.com'}
+        }
+    ];
+
+    for (const {context, expected} of data) {
+        const profileConditions = new ProfileConditions();
+        const actual = profileConditions.normalizeContext(context);
+        vm.assert.deepStrictEqual(actual, expected);
+    }
+}
+
+function testSchemas() {
+    const data = [
+        // Empty
+        {
+            conditionGroups: [],
+            expectedSchema: {},
+            inputs: [
+                {expected: true, context: {url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {conditions: []}
+            ],
+            expectedSchema: {},
+            inputs: [
+                {expected: true, context: {url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {conditions: []},
+                {conditions: []}
+            ],
+            expectedSchema: {},
+            inputs: [
+                {expected: true, context: {url: 'http://example.com/'}}
+            ]
+        },
+
+        // popupLevel tests
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'equal',
+                            value: '0'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    depth: {const: 0}
+                },
+                required: ['depth']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/'}},
+                {expected: false, context: {depth: 1, url: 'http://example.com/'}},
+                {expected: false, context: {depth: -1, url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'notEqual',
+                            value: '0'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                not: [
+                    {
+                        properties: {
+                            depth: {const: 0}
+                        },
+                        required: ['depth']
+                    }
+                ]
+            },
+            inputs: [
+                {expected: false, context: {depth: 0, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 1, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: -1, url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'lessThan',
+                            value: '0'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    depth: {
+                        type: 'number',
+                        exclusiveMaximum: 0
+                    }
+                },
+                required: ['depth']
+            },
+            inputs: [
+                {expected: false, context: {depth: 0, url: 'http://example.com/'}},
+                {expected: false, context: {depth: 1, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: -1, url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'greaterThan',
+                            value: '0'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    depth: {
+                        type: 'number',
+                        exclusiveMinimum: 0
+                    }
+                },
+                required: ['depth']
+            },
+            inputs: [
+                {expected: false, context: {depth: 0, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 1, url: 'http://example.com/'}},
+                {expected: false, context: {depth: -1, url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'lessThanOrEqual',
+                            value: '0'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    depth: {
+                        type: 'number',
+                        maximum: 0
+                    }
+                },
+                required: ['depth']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/'}},
+                {expected: false, context: {depth: 1, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: -1, url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'greaterThanOrEqual',
+                            value: '0'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    depth: {
+                        type: 'number',
+                        minimum: 0
+                    }
+                },
+                required: ['depth']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 1, url: 'http://example.com/'}},
+                {expected: false, context: {depth: -1, url: 'http://example.com/'}}
+            ]
+        },
+
+        // url tests
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'url',
+                            operator: 'matchDomain',
+                            value: 'example.com'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    domain: {
+                        oneOf: [
+                            {const: 'example.com'}
+                        ]
+                    }
+                },
+                required: ['domain']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/'}},
+                {expected: false, context: {depth: 0, url: 'http://example1.com/'}},
+                {expected: false, context: {depth: 0, url: 'http://example2.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com:1234/'}},
+                {expected: true,  context: {depth: 0, url: 'http://user@example.com:1234/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'url',
+                            operator: 'matchDomain',
+                            value: 'example.com, example1.com, example2.com'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    domain: {
+                        oneOf: [
+                            {const: 'example.com'},
+                            {const: 'example1.com'},
+                            {const: 'example2.com'}
+                        ]
+                    }
+                },
+                required: ['domain']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example1.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example2.com/'}},
+                {expected: false, context: {depth: 0, url: 'http://example3.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com:1234/'}},
+                {expected: true,  context: {depth: 0, url: 'http://user@example.com:1234/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'url',
+                            operator: 'matchRegExp',
+                            value: '^http://example\\d?\\.com/[\\w\\W]*$'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    url: {
+                        type: 'string',
+                        pattern: '^http://example\\d?\\.com/[\\w\\W]*$',
+                        patternFlags: 'i'
+                    }
+                },
+                required: ['url']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example1.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example2.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example3.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/example'}},
+                {expected: false, context: {depth: 0, url: 'http://example.com:1234/'}},
+                {expected: false, context: {depth: 0, url: 'http://user@example.com:1234/'}},
+                {expected: false, context: {depth: 0, url: 'http://example-1.com/'}}
+            ]
+        },
+
+        // modifierKeys tests
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'modifierKeys',
+                            operator: 'are',
+                            value: ''
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    modifierKeys: {
+                        type: 'array',
+                        maxItems: 0,
+                        minItems: 0
+                    }
+                },
+                required: ['modifierKeys']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: []}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt']}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift']}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift', 'Ctrl']}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'modifierKeys',
+                            operator: 'are',
+                            value: 'Alt, Shift'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    modifierKeys: {
+                        type: 'array',
+                        maxItems: 2,
+                        minItems: 2,
+                        allOf: [
+                            {contains: {const: 'Alt'}},
+                            {contains: {const: 'Shift'}}
+                        ]
+                    }
+                },
+                required: ['modifierKeys']
+            },
+            inputs: [
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: []}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift']}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift', 'Ctrl']}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'modifierKeys',
+                            operator: 'areNot',
+                            value: ''
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                not: [
+                    {
+                        properties: {
+                            modifierKeys: {
+                                type: 'array',
+                                maxItems: 0,
+                                minItems: 0
+                            }
+                        },
+                        required: ['modifierKeys']
+                    }
+                ]
+            },
+            inputs: [
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: []}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift', 'Ctrl']}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'modifierKeys',
+                            operator: 'areNot',
+                            value: 'Alt, Shift'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                not: [
+                    {
+                        properties: {
+                            modifierKeys: {
+                                type: 'array',
+                                maxItems: 2,
+                                minItems: 2,
+                                allOf: [
+                                    {contains: {const: 'Alt'}},
+                                    {contains: {const: 'Shift'}}
+                                ]
+                            }
+                        },
+                        required: ['modifierKeys']
+                    }
+                ]
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: []}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt']}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift', 'Ctrl']}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'modifierKeys',
+                            operator: 'include',
+                            value: ''
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    modifierKeys: {
+                        type: 'array',
+                        minItems: 0
+                    }
+                },
+                required: ['modifierKeys']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: []}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift', 'Ctrl']}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'modifierKeys',
+                            operator: 'include',
+                            value: 'Alt, Shift'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    modifierKeys: {
+                        type: 'array',
+                        minItems: 2,
+                        allOf: [
+                            {contains: {const: 'Alt'}},
+                            {contains: {const: 'Shift'}}
+                        ]
+                    }
+                },
+                required: ['modifierKeys']
+            },
+            inputs: [
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: []}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift', 'Ctrl']}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'modifierKeys',
+                            operator: 'notInclude',
+                            value: ''
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    modifierKeys: {
+                        type: 'array'
+                    }
+                },
+                required: ['modifierKeys']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: []}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift']}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift', 'Ctrl']}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'modifierKeys',
+                            operator: 'notInclude',
+                            value: 'Alt, Shift'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                properties: {
+                    modifierKeys: {
+                        type: 'array',
+                        not: [
+                            {contains: {const: 'Alt'}},
+                            {contains: {const: 'Shift'}}
+                        ]
+                    }
+                },
+                required: ['modifierKeys']
+            },
+            inputs: [
+                {expected: true,  context: {depth: 0, url: 'http://example.com/', modifierKeys: []}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt']}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift']}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/', modifierKeys: ['Alt', 'Shift', 'Ctrl']}}
+            ]
+        },
+
+        // Multiple conditions tests
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'greaterThan',
+                            value: '0'
+                        },
+                        {
+                            type: 'popupLevel',
+                            operator: 'lessThan',
+                            value: '3'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                allOf: [
+                    {
+                        properties: {
+                            depth: {
+                                type: 'number',
+                                exclusiveMinimum: 0
+                            }
+                        },
+                        required: ['depth']
+                    },
+                    {
+                        properties: {
+                            depth: {
+                                type: 'number',
+                                exclusiveMaximum: 3
+                            }
+                        },
+                        required: ['depth']
+                    }
+                ]
+            },
+            inputs: [
+                {expected: false, context: {depth: -2, url: 'http://example.com/'}},
+                {expected: false, context: {depth: -1, url: 'http://example.com/'}},
+                {expected: false, context: {depth: 0, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 1, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 2, url: 'http://example.com/'}},
+                {expected: false, context: {depth: 3, url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'greaterThan',
+                            value: '0'
+                        },
+                        {
+                            type: 'popupLevel',
+                            operator: 'lessThan',
+                            value: '3'
+                        }
+                    ]
+                },
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'equal',
+                            value: '0'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                anyOf: [
+                    {
+                        allOf: [
+                            {
+                                properties: {
+                                    depth: {
+                                        type: 'number',
+                                        exclusiveMinimum: 0
+                                    }
+                                },
+                                required: ['depth']
+                            },
+                            {
+                                properties: {
+                                    depth: {
+                                        type: 'number',
+                                        exclusiveMaximum: 3
+                                    }
+                                },
+                                required: ['depth']
+                            }
+                        ]
+                    },
+                    {
+                        properties: {
+                            depth: {const: 0}
+                        },
+                        required: ['depth']
+                    }
+                ]
+            },
+            inputs: [
+                {expected: false, context: {depth: -2, url: 'http://example.com/'}},
+                {expected: false, context: {depth: -1, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 1, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 2, url: 'http://example.com/'}},
+                {expected: false, context: {depth: 3, url: 'http://example.com/'}}
+            ]
+        },
+        {
+            conditionGroups: [
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'greaterThan',
+                            value: '0'
+                        },
+                        {
+                            type: 'popupLevel',
+                            operator: 'lessThan',
+                            value: '3'
+                        }
+                    ]
+                },
+                {
+                    conditions: [
+                        {
+                            type: 'popupLevel',
+                            operator: 'lessThanOrEqual',
+                            value: '0'
+                        },
+                        {
+                            type: 'popupLevel',
+                            operator: 'greaterThanOrEqual',
+                            value: '-1'
+                        }
+                    ]
+                }
+            ],
+            expectedSchema: {
+                anyOf: [
+                    {
+                        allOf: [
+                            {
+                                properties: {
+                                    depth: {
+                                        type: 'number',
+                                        exclusiveMinimum: 0
+                                    }
+                                },
+                                required: ['depth']
+                            },
+                            {
+                                properties: {
+                                    depth: {
+                                        type: 'number',
+                                        exclusiveMaximum: 3
+                                    }
+                                },
+                                required: ['depth']
+                            }
+                        ]
+                    },
+                    {
+                        allOf: [
+                            {
+                                properties: {
+                                    depth: {
+                                        type: 'number',
+                                        maximum: 0
+                                    }
+                                },
+                                required: ['depth']
+                            },
+                            {
+                                properties: {
+                                    depth: {
+                                        type: 'number',
+                                        minimum: -1
+                                    }
+                                },
+                                required: ['depth']
+                            }
+                        ]
+                    }
+                ]
+            },
+            inputs: [
+                {expected: false, context: {depth: -2, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: -1, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 0, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 1, url: 'http://example.com/'}},
+                {expected: true,  context: {depth: 2, url: 'http://example.com/'}},
+                {expected: false, context: {depth: 3, url: 'http://example.com/'}}
+            ]
+        }
+    ];
+
+    for (const {conditionGroups, expectedSchema, inputs} of data) {
+        const profileConditions = new ProfileConditions();
+        const schema = profileConditions.createSchema(conditionGroups);
+        if (typeof expectedSchema !== 'undefined') {
+            vm.assert.deepStrictEqual(schema, expectedSchema);
+        }
+        if (Array.isArray(inputs)) {
+            for (const {expected, context} of inputs) {
+                const normalizedContext = profileConditions.normalizeContext(context);
+                const actual = schemaValidate(normalizedContext, schema);
+                assert.strictEqual(actual, expected);
+            }
+        }
+    }
+}
+
+
+function main() {
+    testNormalizeContext();
+    testSchemas();
+}
+
+
+if (require.main === module) { main(); }
diff --git a/test/yomichan-vm.js b/test/yomichan-vm.js
index 97faa03e..79e92772 100644
--- a/test/yomichan-vm.js
+++ b/test/yomichan-vm.js
@@ -115,8 +115,29 @@ function deepStrictEqual(actual, expected) {
 }
 
 
+function createURLClass() {
+    const BaseURL = URL;
+    return function URL(url) {
+        const u = new BaseURL(url);
+        this.hash = u.hash;
+        this.host = u.host;
+        this.hostname = u.hostname;
+        this.href = u.href;
+        this.origin = u.origin;
+        this.password = u.password;
+        this.pathname = u.pathname;
+        this.port = u.port;
+        this.protocol = u.protocol;
+        this.search = u.search;
+        this.searchParams = u.searchParams;
+        this.username = u.username;
+    };
+}
+
+
 class VM {
     constructor(context={}) {
+        context.URL = createURLClass();
         this._context = vm.createContext(context);
         this._assert = {
             deepStrictEqual