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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
final class AssignmentExprTests: PrettyPrintTestCase {
func testBasicAssignmentExprs() {
let input =
"""
foo = bar
someVeryLongVariableName = anotherPrettyLongVariableName
shortName = superLongNameForAVariable
"""
let expected =
"""
foo = bar
someVeryLongVariableName =
anotherPrettyLongVariableName
shortName =
superLongNameForAVariable
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 30)
}
func testAssignmentExprsWithGroupedOperators() {
let input =
"""
someVeryLongVariableName = anotherPrettyLongVariableName && someOtherOperand
shortName = wxyz + aaaaaa + bbbbbb + cccccc
longerName = wxyz + aaaaaa + bbbbbb + cccccc || zzzzzzz
"""
let expected =
"""
someVeryLongVariableName =
anotherPrettyLongVariableName
&& someOtherOperand
shortName =
wxyz + aaaaaa + bbbbbb
+ cccccc
longerName =
wxyz + aaaaaa + bbbbbb
+ cccccc || zzzzzzz
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 30)
}
func testAssignmentOperatorFromSequenceWithFunctionCalls() {
let input =
"""
result = firstOp + secondOp + someOpFetchingFunc(foo, bar: bar, baz: baz)
result = someOpFetchingFunc(foo, bar: bar, baz: baz)
result += someOpFetchingFunc(foo, bar: bar, baz: baz)
result = someOpFetchingFunc(foo, bar: bar, baz: baz) + someOtherOperand + andAThirdOneForReasons
result = firstOp + secondOp + thirdOp + someOpFetchingFunc(foo, bar, baz) + nextOp + lastOp
result += firstOp + secondOp + thirdOp + someOpFetchingFunc(foo, bar, baz) + nextOp + lastOp
"""
let expectedWithArgBinPacking =
"""
result =
firstOp + secondOp
+ someOpFetchingFunc(
foo, bar: bar, baz: baz)
result = someOpFetchingFunc(
foo, bar: bar, baz: baz)
result += someOpFetchingFunc(
foo, bar: bar, baz: baz)
result =
someOpFetchingFunc(
foo, bar: bar, baz: baz)
+ someOtherOperand
+ andAThirdOneForReasons
result =
firstOp + secondOp + thirdOp
+ someOpFetchingFunc(
foo, bar, baz) + nextOp
+ lastOp
result +=
firstOp + secondOp + thirdOp
+ someOpFetchingFunc(
foo, bar, baz) + nextOp
+ lastOp
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
assertPrettyPrintEqual(
input: input,
expected: expectedWithArgBinPacking,
linelength: 35,
configuration: config
)
let expectedWithBreakBeforeEachArg =
"""
result =
firstOp + secondOp
+ someOpFetchingFunc(
foo,
bar: bar,
baz: baz
)
result = someOpFetchingFunc(
foo,
bar: bar,
baz: baz
)
result += someOpFetchingFunc(
foo,
bar: bar,
baz: baz
)
result =
someOpFetchingFunc(
foo,
bar: bar,
baz: baz
) + someOtherOperand
+ andAThirdOneForReasons
result =
firstOp + secondOp + thirdOp
+ someOpFetchingFunc(
foo,
bar,
baz
) + nextOp + lastOp
result +=
firstOp + secondOp + thirdOp
+ someOpFetchingFunc(
foo,
bar,
baz
) + nextOp + lastOp
"""
config.lineBreakBeforeEachArgument = true
assertPrettyPrintEqual(
input: input,
expected: expectedWithBreakBeforeEachArg,
linelength: 35,
configuration: config
)
}
func testAssignmentPatternBindingFromSequenceWithFunctionCalls() {
let input =
"""
let result = firstOp + secondOp + someOpFetchingFunc(foo, bar: bar, baz: baz)
let result = someOpFetchingFunc(foo, bar: bar, baz: baz)
let result = someOpFetchingFunc(foo, bar: bar, baz: baz) + someOtherOperand + andAThirdOneForReasons
let result = firstOp + secondOp + thirdOp + someOpFetchingFunc(foo, bar, baz) + nextOp + lastOp
"""
let expectedWithArgBinPacking =
"""
let result =
firstOp + secondOp
+ someOpFetchingFunc(
foo, bar: bar, baz: baz)
let result = someOpFetchingFunc(
foo, bar: bar, baz: baz)
let result =
someOpFetchingFunc(
foo, bar: bar, baz: baz)
+ someOtherOperand
+ andAThirdOneForReasons
let result =
firstOp + secondOp + thirdOp
+ someOpFetchingFunc(
foo, bar, baz) + nextOp
+ lastOp
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
assertPrettyPrintEqual(
input: input,
expected: expectedWithArgBinPacking,
linelength: 35,
configuration: config
)
let expectedWithBreakBeforeEachArg =
"""
let result =
firstOp + secondOp
+ someOpFetchingFunc(
foo,
bar: bar,
baz: baz
)
let result = someOpFetchingFunc(
foo,
bar: bar,
baz: baz
)
let result =
someOpFetchingFunc(
foo,
bar: bar,
baz: baz
) + someOtherOperand
+ andAThirdOneForReasons
let result =
firstOp + secondOp + thirdOp
+ someOpFetchingFunc(
foo,
bar,
baz
) + nextOp + lastOp
"""
config.lineBreakBeforeEachArgument = true
assertPrettyPrintEqual(
input: input,
expected: expectedWithBreakBeforeEachArg,
linelength: 35,
configuration: config
)
}
}
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