File: HasOnlyKnownArgumentsTests.swift

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/*
 This source file is part of the Swift.org open source project

 Copyright (c) 2021-2023 Apple Inc. and the Swift project authors
 Licensed under Apache License v2.0 with Runtime Library Exception

 See https://swift.org/LICENSE.txt for license information
 See https://swift.org/CONTRIBUTORS.txt for Swift project authors
*/

import Foundation
import XCTest
@testable import SwiftDocC
import Markdown

class HasOnlyKnownArgumentsTests: XCTestCase {
    /// No diagnostics when there are two allowed arguments, one of which is optional and unused.
    func testValidDirective() throws {
        let source = "@dir(foo: x)"
        let document = Document(parsing: source, options: .parseBlockDirectives)
        let directive = document.child(at: 0)! as! BlockDirective
        
        let (bundle, context) = try testBundleAndContext(named: "TestBundle")
        
        var problems: [Problem] = []
        _ = Semantic.Analyses.HasOnlyKnownArguments<Intro>(severityIfFound: .error, allowedArguments: ["foo", "bar"]).analyze(directive, children: directive.children, source: nil, for: bundle, in: context, problems: &problems)
        
        XCTAssertTrue(problems.isEmpty)
    }
    
    /// When there are no allowed arguments, diagnose for any provided argument.
    func testNoArguments() throws {
        let source = "@dir(foo: x, bar: x)"
        let document = Document(parsing: source, options: .parseBlockDirectives)
        let directive = document.child(at: 0)! as! BlockDirective
        
        let (bundle, context) = try testBundleAndContext(named: "TestBundle")
        
        var problems: [Problem] = []
        _ = Semantic.Analyses.HasOnlyKnownArguments<Intro>(severityIfFound: .error, allowedArguments: []).analyze(directive, children: directive.children, source: nil, for: bundle, in: context, problems: &problems)
        
        XCTAssertEqual(problems.count, 2)
    }
    
    /// When there are arguments that aren't allowed, diagnose.
    func testInvalidArguments() throws {
        let source = "@dir(foo: x, bar: x, baz: x)"
        let document = Document(parsing: source, options: .parseBlockDirectives)
        let directive = document.child(at: 0)! as! BlockDirective
        
        let (bundle, context) = try testBundleAndContext(named: "TestBundle")
        
        var problems: [Problem] = []
        _ = Semantic.Analyses.HasOnlyKnownArguments<Intro>(severityIfFound: .error, allowedArguments: ["foo", "bar"]).analyze(directive, children: directive.children, source: nil, for: bundle, in: context, problems: &problems)
        
        XCTAssertEqual(problems.count, 1)
    }
    
    func testInvalidArgumentsWithSuggestions() throws {
        let source = "@dir(foo: x, bar: x, baz: x)"
        let document = Document(parsing: source, options: .parseBlockDirectives)
        let directive = document.child(at: 0)! as! BlockDirective
        
        let (bundle, context) = try testBundleAndContext(named: "TestBundle")
        
        var problems: [Problem] = []
        _ = Semantic.Analyses.HasOnlyKnownArguments<Intro>(severityIfFound: .error, allowedArguments: ["foo", "bar", "woof", "bark"]).analyze(directive, children: directive.children, source: nil, for: bundle, in: context, problems: &problems)
        
        XCTAssertEqual(problems.count, 1)
        guard let first = problems.first else { return }
        XCTAssertEqual("error: Unknown argument 'baz' in Intro. These arguments are currently unused but allowed: 'bark', 'woof'.", DiagnosticConsoleWriter.formattedDescription(for: first.diagnostic, options: .formatConsoleOutputForTools))
    }
}