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//===--------- StringAdditionsTests.swift - String Additions Tests --------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2019 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 XCTest
import SwiftDriver
final class StringAdditionsTests: XCTestCase {
func testBasicIdentifiers() {
XCTAssertTrue("contains_Underscore".sd_isSwiftIdentifier)
XCTAssertTrue("_startsWithUnderscore".sd_isSwiftIdentifier)
XCTAssertTrue("contains_Number5".sd_isSwiftIdentifier)
XCTAssertTrue("_1".sd_isSwiftIdentifier)
XCTAssertFalse("5startsWithNumber".sd_isSwiftIdentifier)
XCTAssertFalse("contains space".sd_isSwiftIdentifier)
XCTAssertFalse("contains\nnewline".sd_isSwiftIdentifier)
XCTAssertFalse("contains\ttab".sd_isSwiftIdentifier)
XCTAssertFalse("contains_punctuation,.!?#".sd_isSwiftIdentifier)
XCTAssertTrue("contains$dollar".sd_isSwiftIdentifier)
XCTAssertFalse("$startsWithDollar".sd_isSwiftIdentifier)
XCTAssertFalse("operators+-=*/^".sd_isSwiftIdentifier)
XCTAssertFalse("braces{}".sd_isSwiftIdentifier)
XCTAssertFalse("angleBrackets<>".sd_isSwiftIdentifier)
XCTAssertFalse("parens()".sd_isSwiftIdentifier)
XCTAssertFalse("squareBrackets[]".sd_isSwiftIdentifier)
XCTAssertFalse("<#some name#>".sd_isSwiftIdentifier,
"Placeholders are not valid identifiers")
XCTAssertFalse("".sd_isSwiftIdentifier)
XCTAssertFalse("`$`".sd_isSwiftIdentifier)
XCTAssertFalse("backtick`".sd_isSwiftIdentifier)
}
func testSwiftKeywordsAsIdentifiers() {
XCTAssertTrue("import".sd_isSwiftIdentifier)
XCTAssertTrue("func".sd_isSwiftIdentifier)
XCTAssertTrue("var".sd_isSwiftIdentifier)
XCTAssertTrue("typealias".sd_isSwiftIdentifier)
XCTAssertTrue("class".sd_isSwiftIdentifier)
XCTAssertTrue("struct".sd_isSwiftIdentifier)
XCTAssertTrue("enum".sd_isSwiftIdentifier)
XCTAssertTrue("associatedtype".sd_isSwiftIdentifier)
XCTAssertTrue("prefix".sd_isSwiftIdentifier)
XCTAssertTrue("infix".sd_isSwiftIdentifier)
XCTAssertTrue("postfix".sd_isSwiftIdentifier)
XCTAssertTrue("_".sd_isSwiftIdentifier)
}
func testUnicodeCharacters() {
XCTAssertTrue("👨".sd_isSwiftIdentifier)
XCTAssertFalse("❤️".sd_isSwiftIdentifier)
XCTAssertTrue("💑".sd_isSwiftIdentifier) // Single codepoint
XCTAssertFalse("🙍🏻♂️".sd_isSwiftIdentifier) // Multiple codepoints
XCTAssertTrue("你好".sd_isSwiftIdentifier)
XCTAssertTrue("שלום".sd_isSwiftIdentifier)
XCTAssertTrue("வணக்கம்".sd_isSwiftIdentifier)
XCTAssertTrue("Γειά".sd_isSwiftIdentifier)
XCTAssertTrue("яЛюблюСвифт".sd_isSwiftIdentifier)
XCTAssertFalse(".́duh".sd_isSwiftIdentifier,
"Identifiers cannot start with combining chars")
XCTAssertTrue("s̈pin̈al_tap̈".sd_isSwiftIdentifier,
"Combining characters can be used within identifiers")
XCTAssertFalse("".sd_isSwiftIdentifier,
"Private-use characters aren't valid Swift identifiers")
}
}
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