// Tests/SwiftProtobufPluginLibraryTests/Test_Descriptor.swift - Test Descriptor.swift
//
// Copyright (c) 2014 - 2024 Apple Inc. and the project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See LICENSE.txt for license information:
// https://github.com/apple/swift-protobuf/blob/main/LICENSE.txt
//
// -----------------------------------------------------------------------------

import SwiftProtobuf
import SwiftProtobufPluginLibrary
import XCTest

private let testFeatureSetDefaults =
    try! Google_Protobuf_FeatureSetDefaults(
        serializedBytes: testFeatureSetDefaultBytes,
        extensions: SwiftFeatureTest_TestFeatures_Extensions
    )

private struct TestContext {
    let descriptorSet: DescriptorSet
    var file: FileDescriptor { descriptorSet.files.first! }

    init(_ descriptorTextFormat: String) {
        let file = try! Google_Protobuf_FileDescriptorProto(
            textFormatString: descriptorTextFormat,
            extensions: SwiftFeatureTest_TestFeatures_Extensions
        )
        descriptorSet = DescriptorSet(
            protos: [file],
            featureSetDefaults: testFeatureSetDefaults,
            featureExtensions: [SwiftFeatureTest_Extensions_test]
        )
    }
}

final class Test_Descriptor_FeatureResolution: XCTestCase {

    func testFileLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            """
        )

        let features = context.file.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value1)
    }

    func testFileLevel_Override() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE2 }
              }
            }
            """
        )

        let features = context.file.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value2)  // File override
    }

    func testMessageLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            message_type {
              name: "Top"
              nested_type {
                name: "Nested"
              }
            }
            """
        )

        let topFeatures = context.file.messages.first!.features
        XCTAssertTrue(topFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature2, .value1)
        let nestedFeatures = context.file.messages.first!.messages.first!.features
        XCTAssertTrue(nestedFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature3, .value1)
    }

    func testMessageLevel_Override() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE2 }
              }
            }
            message_type {
              name: "Top"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE3 }
                }
              }
              nested_type {
                name: "Nested"
                options {
                  features {
                    [swift_feature_test.test] { feature3: ENUM_FEATURE_VALUE4 }
                  }
                }
              }
            }
            """
        )

        let topFeatures = context.file.messages.first!.features
        XCTAssertTrue(topFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature2, .value3)  // Top override
        let nestedFeatures = context.file.messages.first!.messages.first!.features
        XCTAssertTrue(nestedFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature2, .value3)  // Top override
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature3, .value4)  // Nested override
    }

    func testEnumLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            enum_type {
              name: "Top"
              value { name: "TOP_UNKNOWN", number: 0 }
              value { name: "TOP_ONE", number: 1 }
            }
            message_type {
              name: "MyMessage"
              enum_type {
                name: "Nested"
                value { name: "NESTED_UNKNOWN", number: 0 }
                value { name: "NESTED_ONE", number: 1 }
              }
            }
            """
        )

        let topFeatures = context.file.enums.first!.features
        XCTAssertTrue(topFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature2, .value1)
        let nestedFeatures = context.file.messages.first!.enums.first!.features
        XCTAssertTrue(nestedFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature3, .value1)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature4, .value1)
    }

    func testEnumLevel_Override() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE2 }
              }
            }
            enum_type {
              name: "Top"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE3 }
                }
              }
              value { name: "TOP_UNKNOWN", number: 0 }
              value { name: "TOP_ONE", number: 1 }
            }
            message_type {
              name: "MyMessage"
              options {
                features {
                  [swift_feature_test.test] { feature3: ENUM_FEATURE_VALUE4 }
                }
              }
              enum_type {
                name: "Nested"
                options {
                  features {
                    [swift_feature_test.test] { feature4: ENUM_FEATURE_VALUE5 }
                  }
                }
                value { name: "NESTED_UNKNOWN", number: 0 }
                value { name: "NESTED_ONE", number: 1 }
              }
            }
            """
        )

        let topFeatures = context.file.enums.first!.features
        XCTAssertTrue(topFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature1, .value2)  //  File override
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature2, .value3)  //  "Top" Enum override
        let nestedFeatures = context.file.messages.first!.enums.first!.features
        XCTAssertTrue(nestedFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature2, .value1)  // default ("Top" Enum override)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature3, .value4)  // Message override
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature4, .value5)  // "Nested" Enum override
    }

    func testEnumValueLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            enum_type {
              name: "Top"
              value { name: "TOP_UNKNOWN", number: 0 }
              value { name: "TOP_ONE", number: 1 }
            }
            """
        )

        let features = context.file.enums.first!.values.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature3, .value1)
    }

    func testEnumValueLevel_Override() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE2 }
              }
            }
            enum_type {
              name: "MyEnum"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE3 }
                }
              }
              value {
                name: "TOP_UNKNOWN"
                options {
                  features {
                    [swift_feature_test.test] { feature3: ENUM_FEATURE_VALUE4 }
                  }
                }
                number: 0
              }
              value { name: "TOP_ONE", number: 1 }
            }
            """
        )

        let features = context.file.enums.first!.values.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value2)  //  File override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value3)  //  Enum override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature3, .value4)  //  EnumValue override
    }

    func testExtensionRangeLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            message_type {
              name: "MyMessage"
              extension_range { start: 1, end: 100 }
            }
            """
        )

        let features = context.file.messages.first!.messageExtensionRanges.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature3, .value1)
    }

    func testExtensionRangeLevel_Override() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE2 }
              }
            }
            message_type {
              name: "MyMessage"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE3 }
                }
              }
              extension_range {
                start: 1
                end: 100
                options {
                  features {
                    [swift_feature_test.test] { feature3: ENUM_FEATURE_VALUE4 }
                  }
                }
              }
            }
            """
        )

        let features = context.file.messages.first!.messageExtensionRanges.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value2)  //  File override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value3)  //  Message override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature3, .value4)  //  ExtensionRange override
    }

    func testExtensionLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            message_type {
              name: "MyMessage"
              extension_range { start: 1, end: 100 }
              extension {
                name: "nested"
                json_name: "nested"
                number: 2
                type: TYPE_STRING
                extendee: ".MyMessage"
              }
            }
            extension {
              name: "top"
              json_name: "top"
              number: 1
              type: TYPE_STRING
              extendee: ".MyMessage"
            }
            """
        )

        let topFeatures = context.file.extensions.first!.features
        XCTAssertTrue(topFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature2, .value1)
        let nestedFeatures = context.file.messages.first!.extensions.first!.features
        XCTAssertTrue(nestedFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature3, .value1)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature4, .value1)
    }

    func testExtensionLevel_Override() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE2 }
              }
            }
            message_type {
              name: "MyMessage"
              options {
                features {
                  [swift_feature_test.test] { feature3: ENUM_FEATURE_VALUE4 }
                }
              }
              extension_range { start: 1, end: 100 }
              extension {
                name: "nested"
                json_name: "nested"
                number: 2
                type: TYPE_STRING
                extendee: ".MyMessage"
                options {
                  features {
                    [swift_feature_test.test] { feature4: ENUM_FEATURE_VALUE5 }
                  }
                }
              }
            }
            extension {
              name: "top"
              json_name: "top"
              number: 1
              type: TYPE_STRING
              extendee: ".MyMessage"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE3 }
                }
              }
            }
            """
        )

        let topFeatures = context.file.extensions.first!.features
        XCTAssertTrue(topFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(topFeatures.SwiftFeatureTest_test.feature2, .value3)  // "top" Extension override
        let nestedFeatures = context.file.messages.first!.extensions.first!.features
        XCTAssertTrue(nestedFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature2, .value1)  // default ("top" Extension override)
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature3, .value4)  // Message override
        XCTAssertEqual(nestedFeatures.SwiftFeatureTest_test.feature4, .value5)  // "nested" Extension override
    }

    func testMessageFieldLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            message_type {
              name: "MyMessage"
              field {
                name: "field"
                json_name: "field"
                number: 1
                type: TYPE_STRING
              }
            }
            """
        )

        let features = context.file.messages.first!.fields.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature3, .value1)
    }

    func testMessageFieldLevel_Override() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE2 }
              }
            }
            message_type {
              name: "MyMessage"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE3 }
                }
              }
              field {
                name: "field"
                json_name: "field"
                number: 1
                type: TYPE_STRING
                options {
                  features {
                    [swift_feature_test.test] { feature3: ENUM_FEATURE_VALUE4 }
                  }
                }
              }
            }
            """
        )

        let features = context.file.messages.first!.fields.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value3)  // Message override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature3, .value4)  // Field override
    }

    func testMessageOneofFieldLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            message_type {
              name: "MyMessage"
              oneof_decl { name: "my_oneof" }
              field {
                name: "oneof_field"
                json_name: "oneof_field"
                number: 1
                type: TYPE_STRING
                oneof_index: 0
              }
              field {
                name: "not_oneof_field"
                json_name: "not_oneof_field"
                number: 2
                type: TYPE_STRING
              }
            }
            """
        )

        let oneof = context.file.messages.first!.realOneofs.first!
        XCTAssertEqual(oneof.name, "my_oneof")
        let oneofFeatures = oneof.features
        XCTAssertTrue(oneofFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(oneofFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(oneofFeatures.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(oneofFeatures.SwiftFeatureTest_test.feature3, .value1)
        let oneofField = context.file.messages.first!.fields.first!
        XCTAssertEqual(oneofField.name, "oneof_field")
        let oneofFieldFeatures = oneofField.features
        XCTAssertTrue(oneofFieldFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature3, .value1)
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature4, .value1)
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature5, .value1)
        let field = context.file.messages.first!.fields[1]
        XCTAssertEqual(field.name, "not_oneof_field")
        let fieldFeatures = field.features
        XCTAssertTrue(fieldFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature3, .value1)
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature4, .value1)
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature5, .value1)
    }

    func testMessageOneofFieldLevel_Override() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE2 }
              }
            }
            message_type {
              name: "MyMessage"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE3 }
                }
              }
              oneof_decl {
                name: "my_oneof"
                options {
                  features {
                    [swift_feature_test.test] { feature3: ENUM_FEATURE_VALUE4 }
                  }
                }
              }
              field {
                name: "oneof_field"
                json_name: "oneof_field"
                number: 1
                type: TYPE_STRING
                oneof_index: 0
                options {
                  features {
                    [swift_feature_test.test] { feature4: ENUM_FEATURE_VALUE5 }
                  }
                }
              }
              field {
                name: "not_oneof_field"
                json_name: "not_oneof_field"
                number: 2
                type: TYPE_STRING
                options {
                  features {
                    [swift_feature_test.test] { feature5: ENUM_FEATURE_VALUE6 }
                  }
                }
              }
            }
            """
        )

        let oneof = context.file.messages.first!.realOneofs.first!
        XCTAssertEqual(oneof.name, "my_oneof")
        let oneofFeatures = oneof.features
        XCTAssertTrue(oneofFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(oneofFeatures.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(oneofFeatures.SwiftFeatureTest_test.feature2, .value3)  // Message override
        XCTAssertEqual(oneofFeatures.SwiftFeatureTest_test.feature3, .value4)  // Oneof override
        let oneofField = context.file.messages.first!.fields.first!
        XCTAssertEqual(oneofField.name, "oneof_field")
        let oneofFieldFeatures = oneofField.features
        XCTAssertTrue(oneofFieldFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature2, .value3)  // Message override
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature3, .value4)  // Oneof override
        XCTAssertEqual(oneofFieldFeatures.SwiftFeatureTest_test.feature4, .value5)  // "oneof_field" Field override
        XCTAssertEqual(
            oneofFieldFeatures.SwiftFeatureTest_test.feature5,  // default ("not_oneof_field" Field override)
            .value1
        )
        let field = context.file.messages.first!.fields[1]
        XCTAssertEqual(field.name, "not_oneof_field")
        let fieldFeatures = field.features
        XCTAssertTrue(fieldFeatures.hasSwiftFeatureTest_test)
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature1, .value2)  // File override
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature2, .value3)  // Message override
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature3, .value1)  // default (Oneof override)
        XCTAssertEqual(
            fieldFeatures.SwiftFeatureTest_test.feature4,  // default ("oneof_field" Field override)
            .value1
        )
        XCTAssertEqual(fieldFeatures.SwiftFeatureTest_test.feature5, .value6)  // "not_oneof_field" Field override
    }

    func testServiceLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            service {
              name: "MyService"
            }
            """
        )

        let features = context.file.services.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value1)
    }

    func testServiceLevel_Overrides() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE3 }
              }
            }
            service {
              name: "MyService"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE4 }
                }
              }
            }
            """
        )

        let features = context.file.services.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value3)  // File override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value4)  // Service override
    }

    func testMethodLevel_Defaults() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            message_type { name: "empty" }
            service {
              name: "MyService"
              method { name: "doSomething" input_type: ".empty" output_type: ".empty" }
            }
            """
        )

        let features = context.file.services.first!.methods.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value1)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature3, .value1)
    }

    func testMethodLevel_Overrides() throws {
        let context = TestContext(
            """
            name: "test.proto"
            edition: EDITION_2023
            options {
              features {
                [swift_feature_test.test] { feature1: ENUM_FEATURE_VALUE3 }
              }
            }
            message_type { name: "empty" }
            service {
              name: "MyService"
              options {
                features {
                  [swift_feature_test.test] { feature2: ENUM_FEATURE_VALUE4 }
                }
              }
              method {
                name: "doSomething"
                input_type: ".empty"
                output_type: ".empty"
                options {
                  features {
                    [swift_feature_test.test] { feature3: ENUM_FEATURE_VALUE5 }
                  }
                }
              }
            }
            """
        )

        let features = context.file.services.first!.methods.first!.features
        XCTAssertTrue(features.hasSwiftFeatureTest_test)
        XCTAssertEqual(features.SwiftFeatureTest_test.feature1, .value3)  // File override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature2, .value4)  // Service override
        XCTAssertEqual(features.SwiftFeatureTest_test.feature3, .value5)  // Method override
    }

}