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import SwiftFormat
final class MacroDeclTests: PrettyPrintTestCase {
func testBasicMacroDeclarations_noPackArguments() {
let input =
"""
macro myFun(var1: Int, var2: Double) = #externalMacro(module: "Foo", type: "Bar")
macro reallyLongName(var1: Int, var2: Double, var3: Bool) = #externalMacro(module: "Foo", type: "Bar")
macro myFun() = #externalMacro(module: "Foo", type: "Bar")
"""
let expected =
"""
macro myFun(var1: Int, var2: Double) =
#externalMacro(module: "Foo", type: "Bar")
macro reallyLongName(
var1: Int,
var2: Double,
var3: Bool
) = #externalMacro(module: "Foo", type: "Bar")
macro myFun() = #externalMacro(module: "Foo", type: "Bar")
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = true
assertPrettyPrintEqual(input: input, expected: expected, linelength: 58, configuration: config)
}
func testBasicMacroDeclarations_packArguments() {
let input =
"""
macro myFun(var1: Int, var2: Double) = #externalMacro(module: "Foo", type: "Bar")
macro reallyLongName(var1: Int, var2: Double, var3: Bool) = #externalMacro(module: "Foo", type: "Bar")
macro myFun() = #externalMacro(module: "Foo", type: "Bar")
"""
let expected =
"""
macro myFun(var1: Int, var2: Double) =
#externalMacro(module: "Foo", type: "Bar")
macro reallyLongName(
var1: Int, var2: Double, var3: Bool
) = #externalMacro(module: "Foo", type: "Bar")
macro myFun() = #externalMacro(module: "Foo", type: "Bar")
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
assertPrettyPrintEqual(input: input, expected: expected, linelength: 58, configuration: config)
}
func testMacroDeclReturns() {
let input =
"""
macro myFun(var1: Int, var2: Double) -> Double = #externalMacro(module: "Foo", type: "Bar")
macro reallyLongName(var1: Int, var2: Double, var3: Bool) -> Double = #externalMacro(module: "Foo", type: "Bar")
macro reallyReallyLongName(var1: Int, var2: Double, var3: Bool) -> Double = #externalMacro(module: "Foo", type: "Bar")
macro tupleFunc() -> (one: Int, two: Double, three: Bool, four: String) = #externalMacro(module: "Foo", type: "Bar")
macro memberTypeReallyReallyLongNameFunc() -> Type.InnerMember = #externalMacro(module: "Foo", type: "Bar")
macro tupleMembersReallyLongNameFunc() -> (Type.Inner, Type2.Inner2) = #externalMacro(module: "Foo", type: "Bar")
"""
let expected =
"""
macro myFun(var1: Int, var2: Double) -> Double =
#externalMacro(module: "Foo", type: "Bar")
macro reallyLongName(var1: Int, var2: Double, var3: Bool)
-> Double = #externalMacro(module: "Foo", type: "Bar")
macro reallyReallyLongName(
var1: Int, var2: Double, var3: Bool
) -> Double = #externalMacro(module: "Foo", type: "Bar")
macro tupleFunc() -> (
one: Int, two: Double, three: Bool, four: String
) = #externalMacro(module: "Foo", type: "Bar")
macro memberTypeReallyReallyLongNameFunc()
-> Type.InnerMember =
#externalMacro(module: "Foo", type: "Bar")
macro tupleMembersReallyLongNameFunc() -> (
Type.Inner, Type2.Inner2
) = #externalMacro(module: "Foo", type: "Bar")
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
assertPrettyPrintEqual(input: input, expected: expected, linelength: 58, configuration: config)
}
func testMacroGenericParameters_noPackArguments() {
let input =
"""
macro myFun<S, T>(var1: S, var2: T) = #externalMacro(module: "Foo", type: "Bar")
macro myFun<S: T & U>(var1: S) = #externalMacro(module: "Foo", type: "Bar")
macro longerNameFun<ReallyLongTypeName: Conform, TypeName>(var1: ReallyLongTypeName, var2: TypeName) = #externalMacro(module: "Foo", type: "Bar")
"""
let expected =
"""
macro myFun<S, T>(var1: S, var2: T) =
#externalMacro(module: "Foo", type: "Bar")
macro myFun<S: T & U>(var1: S) =
#externalMacro(module: "Foo", type: "Bar")
macro longerNameFun<
ReallyLongTypeName: Conform,
TypeName
>(
var1: ReallyLongTypeName,
var2: TypeName
) =
#externalMacro(module: "Foo", type: "Bar")
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = true
assertPrettyPrintEqual(input: input, expected: expected, linelength: 44, configuration: config)
}
func testMacroGenericParameters_packArguments() {
let input =
"""
macro myFun<S, T>(var1: S, var2: T) = #externalMacro(module: "Foo", type: "Bar")
macro myFun<S: T & U>(var1: S) = #externalMacro(module: "Foo", type: "Bar")
macro longerNameFun<ReallyLongTypeName: Conform, TypeName>(var1: ReallyLongTypeName, var2: TypeName) = #externalMacro(module: "Foo", type: "Bar")
"""
let expected =
"""
macro myFun<S, T>(var1: S, var2: T) =
#externalMacro(module: "Foo", type: "Bar")
macro myFun<S: T & U>(var1: S) =
#externalMacro(module: "Foo", type: "Bar")
macro longerNameFun<
ReallyLongTypeName: Conform, TypeName
>(
var1: ReallyLongTypeName, var2: TypeName
) =
#externalMacro(module: "Foo", type: "Bar")
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
assertPrettyPrintEqual(input: input, expected: expected, linelength: 44, configuration: config)
}
func testMacroWhereClause() {
let input =
"""
macro index<Elements: Collection, Element>(
of element: Element, in collection: Elements
) -> Elements.Index? = #externalMacro(module: "Foo", type: "Bar") where Elements.Element == Element
macro index<Elements: Collection, Element>(
of element: Element,
in collection: Elements
) -> Elements.Index? = #externalMacro(module: "Foo", type: "Bar") where Elements.Element == Element, Element: Equatable
macro index<Elements: Collection, Element>(
of element: Element,
in collection: Elements
) -> Elements.Index? = #externalMacro(module: "Foo", type: "Bar") where Elements.Element == Element, Element: Equatable, Element: ReallyLongProtocolName
"""
let expected =
"""
macro index<Elements: Collection, Element>(
of element: Element, in collection: Elements
) -> Elements.Index? =
#externalMacro(module: "Foo", type: "Bar")
where Elements.Element == Element
macro index<Elements: Collection, Element>(
of element: Element,
in collection: Elements
) -> Elements.Index? =
#externalMacro(module: "Foo", type: "Bar")
where
Elements.Element == Element, Element: Equatable
macro index<Elements: Collection, Element>(
of element: Element,
in collection: Elements
) -> Elements.Index? =
#externalMacro(module: "Foo", type: "Bar")
where
Elements.Element == Element, Element: Equatable,
Element: ReallyLongProtocolName
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
assertPrettyPrintEqual(input: input, expected: expected, linelength: 51, configuration: config)
}
func testMacroWhereClause_lineBreakBeforeEachGenericRequirement() {
let input =
"""
public macro index<Elements: Collection, Element>(
of element: Element, in collection: Elements
) -> Elements.Index? = #externalMacro(module: "Foo", type: "Bar") where Elements.Element == Element
public macro index<Elements: Collection, Element>(
of element: Element,
in collection: Elements
) -> Elements.Index? = #externalMacro(module: "Foo", type: "Bar") where Elements.Element == Element, Element: Equatable
public macro index<Elements: Collection, Element>(
of element: Element,
in collection: Elements
) -> Elements.Index? = #externalMacro(module: "Foo", type: "Bar") where Elements.Element == Element, Element: Equatable, Element: ReallyLongProtocolName
"""
let expected =
"""
public macro index<Elements: Collection, Element>(
of element: Element, in collection: Elements
) -> Elements.Index? =
#externalMacro(module: "Foo", type: "Bar")
where Elements.Element == Element
public macro index<Elements: Collection, Element>(
of element: Element,
in collection: Elements
) -> Elements.Index? =
#externalMacro(module: "Foo", type: "Bar")
where
Elements.Element == Element,
Element: Equatable
public macro index<Elements: Collection, Element>(
of element: Element,
in collection: Elements
) -> Elements.Index? =
#externalMacro(module: "Foo", type: "Bar")
where
Elements.Element == Element,
Element: Equatable,
Element: ReallyLongProtocolName
"""
var config = Configuration.forTesting
config.lineBreakBeforeEachArgument = false
config.lineBreakBeforeEachGenericRequirement = true
assertPrettyPrintEqual(input: input, expected: expected, linelength: 50, configuration: config)
}
func testMacroAttributes() {
let input =
"""
@attached(accessor) public macro MyFun() = #externalMacro(module: "Foo", type: "Bar")
@attached(accessor) @attached(memberAttribute) public macro MyFun() = #externalMacro(module: "Foo", type: "Bar")
@attached(accessor) @attached(member, names: named(_storage)) public macro MyFun() = #externalMacro(module: "Foo", type: "Bar")
@attached(accessor)
@attached(member, names: named(_storage))
public macro MyFun() = #externalMacro(module: "Foo", type: "Bar")
"""
let expected =
"""
@attached(accessor) public macro MyFun() =
#externalMacro(module: "Foo", type: "Bar")
@attached(accessor) @attached(memberAttribute) public macro MyFun() =
#externalMacro(module: "Foo", type: "Bar")
@attached(accessor) @attached(member, names: named(_storage))
public macro MyFun() = #externalMacro(module: "Foo", type: "Bar")
@attached(accessor)
@attached(member, names: named(_storage))
public macro MyFun() = #externalMacro(module: "Foo", type: "Bar")
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 69)
}
func testMacroDeclWithoutDefinition() {
let input =
"""
macro myFun()
macro myFun(arg1: Int)
macro myFun() -> Int
macro myFun<T>(arg1: Int)
macro myFun<T>(arg1: Int) where T: S
"""
let expected =
"""
macro myFun()
macro myFun(arg1: Int)
macro myFun() -> Int
macro myFun<T>(arg1: Int)
macro myFun<T>(arg1: Int) where T: S
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 50)
}
func testBreaksBeforeOrInsideOutput() {
let input =
"""
macro name<R>(_ x: Int) -> R
"""
let expected =
"""
macro name<R>(_ x: Int)
-> R
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 23)
assertPrettyPrintEqual(input: input, expected: expected, linelength: 24)
assertPrettyPrintEqual(input: input, expected: expected, linelength: 27)
}
func testBreaksBeforeOrInsideOutput_prioritizingKeepingOutputTogether() {
let input =
"""
macro name<R>(_ x: Int) -> R
"""
let expected =
"""
macro name<R>(
_ x: Int
) -> R
"""
var config = Configuration.forTesting
config.prioritizeKeepingFunctionOutputTogether = true
assertPrettyPrintEqual(input: input, expected: expected, linelength: 23, configuration: config)
assertPrettyPrintEqual(input: input, expected: expected, linelength: 24, configuration: config)
assertPrettyPrintEqual(input: input, expected: expected, linelength: 27, configuration: config)
}
func testBreaksBeforeOrInsideOutputWithAttributes() {
let input =
"""
@attached(member) @attached(memberAttribute)
macro name<R>(_ x: Int) -> R
"""
let expected =
"""
@attached(member)
@attached(memberAttribute)
macro name<R>(_ x: Int)
-> R
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 26)
}
func testBreaksBeforeOrInsideOutputWithAttributes_prioritizingKeepingOutputTogether() {
let input =
"""
@attached(member) @attached(memberAttribute)
macro name<R>(_ x: Int) -> R
"""
let expected =
"""
@attached(member)
@attached(memberAttribute)
macro name<R>(
_ x: Int
) -> R
"""
var config = Configuration.forTesting
config.prioritizeKeepingFunctionOutputTogether = true
assertPrettyPrintEqual(input: input, expected: expected, linelength: 26, configuration: config)
}
func testDoesNotBreakInsideEmptyParens() {
// If the macro name is so long that the parentheses of a no-argument parameter list would
// be pushed past the margin, don't break inside them.
let input =
"""
macro fooBarBaz()
"""
let expected =
"""
macro
fooBarBaz()
"""
assertPrettyPrintEqual(input: input, expected: expected, linelength: 16)
}
}
|
