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|
//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2025 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 SwiftFormat
import SwiftSyntax
import _SwiftFormatTestSupport
final class ArrayDeclTests: PrettyPrintTestCase {
func testBasicArrays() {
let input =
"""
let a = [ ]
let a = [
]
let a = [
// Comment
]
let a = [1, 2, 3,]
let a: [Bool] = [false, true, true, false]
let a = [11111111, 2222222, 33333333, 4444444]
let a: [String] = ["One", "Two", "Three", "Four"]
let a: [String] = ["One", "Two", "Three", "Four", "Five", "Six", "Seven"]
let a: [String] = ["One", "Two", "Three", "Four", "Five", "Six", "Seven",]
let a: [String] = [
"One", "Two", "Three", "Four", "Five",
"Six", "Seven", "Eight",
]
let a = [11111111, 2222222, 33333333, 444444]
"""
let expected =
"""
let a = []
let a = []
let a = [
// Comment
]
let a = [1, 2, 3]
let a: [Bool] = [false, true, true, false]
let a = [
11111111, 2222222, 33333333, 4444444,
]
let a: [String] = [
"One", "Two", "Three", "Four",
]
let a: [String] = [
"One", "Two", "Three", "Four", "Five",
"Six", "Seven",
]
let a: [String] = [
"One", "Two", "Three", "Four", "Five",
"Six", "Seven",
]
let a: [String] = [
"One", "Two", "Three", "Four", "Five",
"Six", "Seven", "Eight",
]
"""
// Ideally, this array would be left on 1 line without a trailing comma. We don't know if the
// comma is required when calculating the length of array elements, so the comma's length is
// always added to last element and that 1 character causes the newlines inside of the array.
+ """
let a = [
11111111, 2222222, 33333333, 444444,
]
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 45)
}
func testArrayOfFunctions() {
let input =
"""
let A = [(Int, Double) -> Bool]()
let A = [(Int, Double) async -> Bool]()
let A = [(Int, Double) throws -> Bool]()
let A = [(Int, Double) async throws -> Bool]()
"""
let expected46 =
"""
let A = [(Int, Double) -> Bool]()
let A = [(Int, Double) async -> Bool]()
let A = [(Int, Double) throws -> Bool]()
let A = [(Int, Double) async throws -> Bool]()
"""
assertPrettyPrintEqual(input: input, expected: expected46, linelength: 46)
let expected43 =
"""
let A = [(Int, Double) -> Bool]()
let A = [(Int, Double) async -> Bool]()
let A = [(Int, Double) throws -> Bool]()
let A = [
(Int, Double) async throws -> Bool
]()
"""
assertPrettyPrintEqual(input: input, expected: expected43, linelength: 43)
let expected35 =
"""
let A = [(Int, Double) -> Bool]()
let A = [
(Int, Double) async -> Bool
]()
let A = [
(Int, Double) throws -> Bool
]()
let A = [
(Int, Double) async throws
-> Bool
]()
"""
assertPrettyPrintEqual(input: input, expected: expected35, linelength: 35)
let expected27 =
"""
let A = [
(Int, Double) -> Bool
]()
let A = [
(Int, Double) async
-> Bool
]()
let A = [
(Int, Double) throws
-> Bool
]()
let A = [
(Int, Double)
async throws -> Bool
]()
"""
assertPrettyPrintEqual(input: input, expected: expected27, linelength: 27)
}
func testNoTrailingCommasInTypes() {
let input =
"""
let a = [SomeSuperMegaLongTypeName]()
"""
let expected =
"""
let a = [
SomeSuperMegaLongTypeName
]()
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 30)
}
func testWhitespaceOnlyDoesNotChangeTrailingComma() {
assertPrettyPrintEqual(
input: """
let a = [
"String"1️⃣,
]
let a = [1, 2, 32️⃣,]
let a: [String] = [
"One", "Two", "Three", "Four", "Five",
"Six", "Seven", "Eight"3️⃣
]
""",
expected: """
let a = [
"String",
]
let a = [1, 2, 3,]
let a: [String] = [
"One", "Two", "Three", "Four", "Five",
"Six", "Seven", "Eight"
]
""",
linelength: 45,
whitespaceOnly: true,
findings: [
FindingSpec("1️⃣", message: "remove trailing comma from the last element in single line collection literal"),
FindingSpec("2️⃣", message: "remove trailing comma from the last element in single line collection literal"),
FindingSpec("3️⃣", message: "add trailing comma to the last element in multiline collection literal"),
]
)
}
func testTrailingCommaDiagnostics() {
assertPrettyPrintEqual(
input: """
let a = [1, 2, 31️⃣,]
let a: [String] = [
"One", "Two", "Three", "Four", "Five",
"Six", "Seven", "Eight"2️⃣
]
""",
expected: """
let a = [1, 2, 3,]
let a: [String] = [
"One", "Two", "Three", "Four", "Five",
"Six", "Seven", "Eight"
]
""",
linelength: 45,
whitespaceOnly: true,
findings: [
FindingSpec("1️⃣", message: "remove trailing comma from the last element in single line collection literal"),
FindingSpec("2️⃣", message: "add trailing comma to the last element in multiline collection literal"),
]
)
}
func testGroupsTrailingComma() {
let input =
"""
let a = [
condition ? firstOption : secondOption,
bar(),
]
"""
let expected =
"""
let a = [
condition
? firstOption
: secondOption,
bar(),
]
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 32)
}
func testInnerElementBreakingFromComma() {
let input =
"""
let a = [("abc", "def", "xyz"),("this ", "string", "is long"),]
let a = [("abc", "def", "xyz"),("this ", "string", "is long")]
let a = [("this ", "string", "is long"),]
let a = [("this ", "string", "is long")]
let a = ["this ", "string", "is longer",]
let a = [("this", "str"), ("is", "lng")]
a = [("az", "by"), ("cf", "de")]
"""
let expected =
"""
let a = [
("abc", "def", "xyz"),
(
"this ", "string", "is long"
),
]
let a = [
("abc", "def", "xyz"),
(
"this ", "string", "is long"
),
]
let a = [
("this ", "string", "is long")
]
let a = [
("this ", "string", "is long")
]
let a = [
"this ", "string",
"is longer",
]
let a = [
("this", "str"),
("is", "lng"),
]
"""
// Ideally, this array would be left on 1 line without a trailing comma. We don't know if the
// comma is required when calculating the length of array elements, so the comma's length is
// always added to last element and that 1 character causes the newlines inside of the array.
+ """
a = [
("az", "by"), ("cf", "de"),
]
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 32)
}
func testInlineArrayTypeSugar() {
let input =
"""
let a: [3 of Int]
let a: [[3 of Int]]
let a: [3 of [3 of Int]]
let a: [n of Int]
let fiveIntegers: [5 of _] = .init(repeating: 99)
let fourBytes: [_ of Int8] = [1, 2, 3, 4]
let fourIntegers: [_ of _] = [1, 2, 3, 4]
let fiveDoubles = [5 of _](repeating: 1.23)
"""
let expected =
"""
let a: [3 of Int]
let a: [[3 of Int]]
let a: [3 of [3 of Int]]
let a: [n of Int]
let fiveIntegers: [5 of _] = .init(repeating: 99)
let fourBytes: [_ of Int8] = [1, 2, 3, 4]
let fourIntegers: [_ of _] = [1, 2, 3, 4]
let fiveDoubles = [5 of _](repeating: 1.23)
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 80)
}
func testInlineArrayTypeSugarWhenLineLengthExceeded() {
let input =
"""
let a: [3 of VeryLongGenericTypeNameThatCausesWrapping]
let a: [3 of [3 of VeryLongGenericTypeNameThatCausesWrapping]]
let a = [3 of VeryLongGenericTypeNameThatCausesWrapping](repeating: foo)
"""
let expected =
"""
let a:
[
3 of
VeryLongGenericTypeNameThatCausesWrapping
]
let a:
[
3 of
[
3 of
VeryLongGenericTypeNameThatCausesWrapping
]
]
let a =
[
3 of
VeryLongGenericTypeNameThatCausesWrapping
](
repeating:
foo
)
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 5)
}
}
|
