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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
//
//===----------------------------------------------------------------------===//
// This test file has been translated from swift/test/Parse/deprecated_where.swift
import XCTest
// TODO: The generic where clause next to generic parameters is only valid in language mode 4. We should disallow them in language mode 5.
final class DeprecatedWhereTests: ParserTestCase {
func testDeprecatedWhere1() {
assertParse(
"""
protocol Mashable { }
protocol Womparable { }
"""
)
}
func testDeprecatedWhere2() {
assertParse(
"""
// FuncDecl: Choose 0
func f1<T>(x: T) {}
"""
)
}
func testDeprecatedWhere3() {
assertParse(
"""
// FuncDecl: Choose 1
// 1: Inherited constraint
func f2<T: Mashable>(x: T) {} // no-warning
// 2: Non-trailing where
func f3<T where T: Womparable>(x: T) {}
// 3: Has return type
func f4<T>(x: T) -> Int { return 2 } // no-warning
// 4: Trailing where
func f5<T>(x: T) where T : Equatable {} // no-warning
"""
)
}
func testDeprecatedWhere4() {
assertParse(
"""
// FuncDecl: Choose 2
// 1,2
func f12<T: Mashable where T: Womparable>(x: T) {}
// 1,3
func f13<T: Mashable>(x: T) -> Int { return 2 } // no-warning
// 1,4
func f14<T: Mashable>(x: T) where T: Equatable {} // no-warning
// 2,3
func f23<T where T: Womparable>(x: T) -> Int { return 2 }
// 2,4
func f24<T where T: Womparable>(x: T) where T: Equatable {}
// 3,4
func f34<T>(x: T) -> Int where T: Equatable { return 2 } // no-warning
"""
)
}
func testDeprecatedWhere5() {
assertParse(
"""
// FuncDecl: Choose 3
// 1,2,3
func f123<T: Mashable where T: Womparable>(x: T) -> Int { return 2 }
// 1,2,4
func f124<T: Mashable where T: Womparable>(x: T) where T: Equatable {}
// 2,3,4
func f234<T where T: Womparable>(x: T) -> Int where T: Equatable { return 2 }
"""
)
}
func testDeprecatedWhere6() {
assertParse(
"""
// FuncDecl: Choose 4
// 1,2,3,4
func f1234<T: Mashable where T: Womparable>(x: T) -> Int where T: Equatable { return 2 }
"""
)
}
func testDeprecatedWhere7() {
assertParse(
"""
// NominalTypeDecl: Choose 0
struct S0<T> {}
"""
)
}
func testDeprecatedWhere8() {
assertParse(
"""
// NominalTypeDecl: Choose 1
// 1: Inherited constraint
struct S1<T: Mashable> {} // no-warning
// 2: Non-trailing where
struct S2<T where T: Womparable> {}
// 3: Trailing where
struct S3<T> where T : Equatable {} // no-warning
"""
)
}
func testDeprecatedWhere9() {
assertParse(
"""
// NominalTypeDecl: Choose 2
// 1,2
struct S12<T: Mashable where T: Womparable> {}
// 1,3
struct S13<T: Mashable> where T: Equatable {} // no-warning
// 2,3
struct S23<T where T: Womparable> where T: Equatable {}
"""
)
}
func testDeprecatedWhere10() {
assertParse(
"""
// NominalTypeDecl: Choose 3
// 1,2,3
struct S123<T: Mashable where T: Womparable> where T: Equatable {}
"""
)
}
func testDeprecatedWhere11() {
assertParse(
"""
protocol ProtoA {}
protocol ProtoB {}
protocol ProtoC {}
protocol ProtoD {}
func testCombinedConstraints<T: ProtoA & ProtoB where T: ProtoC>(x: T) {}
func testCombinedConstraints<T: ProtoA & ProtoB where T: ProtoC>(x: T) where T: ProtoD {}
"""
)
}
func testDeprecatedWhere12() {
assertParse(
"""
func testCombinedConstraintsOldℹ️<T: 2️⃣protocol3️⃣<ProtoA, ProtoB> where T: ProtoC4️⃣>(x: T) {}
""",
diagnostics: [
DiagnosticSpec(
locationMarker: "2️⃣",
message: "expected inherited type in generic parameter",
fixIts: ["insert inherited type"]
),
DiagnosticSpec(
locationMarker: "2️⃣",
message: "expected '>' to end generic parameter clause",
notes: [NoteSpec(message: "to match this opening '<'")],
fixIts: ["insert '>'"]
),
DiagnosticSpec(
locationMarker: "2️⃣",
message: "expected parameter clause in function signature",
fixIts: ["insert parameter clause"]
),
DiagnosticSpec(
locationMarker: "3️⃣",
message: "expected identifier in protocol",
fixIts: ["insert identifier"]
),
DiagnosticSpec(
locationMarker: "4️⃣",
message: "unexpected code '>(x: T)' in protocol"
),
],
fixedSource: """
func testCombinedConstraintsOld<T: <#type#>>()protocol <#identifier#><ProtoA, ProtoB> where T: ProtoC>(x: T) {}
"""
)
}
func testDeprecatedWhere13() {
assertParse(
"""
func testCombinedConstraintsOldℹ️<T: 2️⃣protocol3️⃣<ProtoA, ProtoB> where T: ProtoC4️⃣>(x: T) where T: ProtoD {}
""",
diagnostics: [
DiagnosticSpec(
locationMarker: "2️⃣",
message: "expected inherited type in generic parameter",
fixIts: ["insert inherited type"]
),
DiagnosticSpec(
locationMarker: "2️⃣",
message: "expected '>' to end generic parameter clause",
notes: [NoteSpec(message: "to match this opening '<'")],
fixIts: ["insert '>'"]
),
DiagnosticSpec(
locationMarker: "2️⃣",
message: "expected parameter clause in function signature",
fixIts: ["insert parameter clause"]
),
DiagnosticSpec(
locationMarker: "3️⃣",
message: "expected identifier in protocol",
fixIts: ["insert identifier"]
),
DiagnosticSpec(
locationMarker: "4️⃣",
message: "unexpected code '>(x: T) where T: ProtoD' in protocol"
),
],
fixedSource: """
func testCombinedConstraintsOld<T: <#type#>>()protocol <#identifier#><ProtoA, ProtoB> where T: ProtoC>(x: T) where T: ProtoD {}
"""
)
}
}
|
