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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 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 the list of Swift project authors
//
//===----------------------------------------------------------------------===//
import SwiftSyntax
import XCTest
import _SwiftSyntaxTestSupport
class SyntaxChildrenTests: XCTestCase {
public func testIterateWithAllPresent() throws {
let returnStmt = ReturnStmtSyntax(
returnKeyword: .keyword(.return),
expression: ExprSyntax(MissingExprSyntax())
)
var iterator = returnStmt.children(viewMode: .sourceAccurate).makeIterator()
try XCTAssertNext(&iterator) { $0.as(TokenSyntax.self)?.tokenKind == .keyword(.return) }
try XCTAssertNext(&iterator) { $0.is(ExprSyntax.self) }
XCTAssertNextIsNil(&iterator)
}
public func testIterateWithSomeMissing() throws {
let returnStmt = ReturnStmtSyntax(
returnKeyword: .keyword(.return)
)
var iterator = returnStmt.children(viewMode: .sourceAccurate).makeIterator()
try XCTAssertNext(&iterator) { $0.as(TokenSyntax.self)?.tokenKind == .keyword(.return) }
XCTAssertNextIsNil(&iterator)
}
public func testIterateWithAllMissing() {
let returnStmt = ReturnStmtSyntax(
returnKeyword: TokenSyntax.keyword(.return, presence: .missing)
)
var iterator = returnStmt.children(viewMode: .sourceAccurate).makeIterator()
XCTAssertNextIsNil(&iterator)
}
public func testMissingTokens() throws {
let returnStmt = ReturnStmtSyntax(
returnKeyword: .keyword(.return, presence: .missing)
)
var sourceAccurateIterator = returnStmt.children(viewMode: .sourceAccurate).makeIterator()
XCTAssertNextIsNil(&sourceAccurateIterator)
var fixedUpIterator = returnStmt.children(viewMode: .fixedUp).makeIterator()
try XCTAssertNext(&fixedUpIterator) { $0.as(TokenSyntax.self)?.tokenKind == .keyword(.return) }
XCTAssertNextIsNil(&fixedUpIterator)
}
public func testMissingNodes() throws {
let node = ReturnStmtSyntax(returnKeyword: .keyword(.return), expression: ExprSyntax(MissingExprSyntax()))
var sourceAccurateIt = node.children(viewMode: .sourceAccurate).makeIterator()
try XCTAssertNext(&sourceAccurateIt) { $0.is(TokenSyntax.self) }
try XCTAssertNext(&sourceAccurateIt) { $0.is(MissingExprSyntax.self) }
var fixedUpIt = node.children(viewMode: .fixedUp).makeIterator()
try XCTAssertNext(&fixedUpIt) { $0.is(TokenSyntax.self) }
try XCTAssertNext(&fixedUpIt) { $0.is(MissingExprSyntax.self) }
}
public func testTokenSequencesWithMissingChild() {
let codeBlock = CodeBlockSyntax(
leftBrace: .leftBraceToken(presence: .missing),
statements: [],
rightBrace: .rightBraceToken(presence: .missing)
)
XCTAssertEqual(Array(codeBlock.tokens(viewMode: .all)).count, 2)
}
}
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