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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
//
//===----------------------------------------------------------------------===//
import SwiftSyntax
import SwiftSyntaxBuilder
import XCTest
final class IfStmtTests: XCTestCase {
func testEmptyIfExpr() {
// Use the convenience initializer from IfStmtConvenienceInitializers. This is
// disambiguated by the absence of a labelName parameter and the use of a
// trailing closure.
let buildable = IfExprSyntax(conditions: ConditionElementListSyntax { BooleanLiteralExprSyntax(false) }) {}
assertBuildResult(
buildable,
"""
if false {
}
"""
)
}
func testIfStmtSyntax() throws {
let testCases: [UInt: (IfExprSyntax, String)] = [
#line: (
ExprSyntax(
"""
if foo == x {
return foo
}
"""
).cast(IfExprSyntax.self),
"""
if foo == x {
return foo
}
"""
),
#line: (
ExprSyntax(
"""
if foo == x {
return foo
}
else {
return bar
}
"""
).cast(IfExprSyntax.self),
"""
if foo == x {
return foo
}
else {
return bar
}
"""
),
#line: (
try IfExprSyntax("if foo == x") { StmtSyntax("return foo") },
"""
if foo == x {
return foo
}
"""
),
#line: (
try IfExprSyntax("if foo == x") {
StmtSyntax("return foo")
} else: {
StmtSyntax("return bar")
},
"""
if foo == x {
return foo
} else {
return bar
}
"""
),
#line: (
try IfExprSyntax(
"if foo == x",
bodyBuilder: { StmtSyntax("return foo") },
elseIf: IfExprSyntax("if foo == z") { StmtSyntax("return baz") }
),
"""
if foo == x {
return foo
} else if foo == z {
return baz
}
"""
),
#line: (
try IfExprSyntax(
"if x == 1",
bodyBuilder: {
StmtSyntax(#"return "one""#)
},
elseIf: IfExprSyntax(
"if x == 2",
bodyBuilder: {
StmtSyntax(#"return "two""#)
},
else: {
StmtSyntax(#"return "many""#)
}
)
),
"""
if x == 1 {
return "one"
} else if x == 2 {
return "two"
} else {
return "many"
}
"""
),
]
for (line, testCase) in testCases {
let (builder, expected) = testCase
assertBuildResult(builder, expected, line: line)
}
}
func testIfStmtSpacing() {
let testCases: [UInt: (IfExprSyntax, String)] = [
#line: (
IfExprSyntax(conditions: ConditionElementListSyntax { ExprSyntax("!(true)") }) {},
"""
if !(true) {
}
"""
),
#line: (
ExprSyntax(
"""
if !(false) {
}
"""
).cast(IfExprSyntax.self),
"""
if !(false) {
}
"""
),
]
for (line, testCase) in testCases {
let (builder, expected) = testCase
assertBuildResult(builder, expected, line: line)
}
}
func testIfLetStmt() {
let buildable = IfExprSyntax(
conditions: ConditionElementListSyntax {
OptionalBindingConditionSyntax(
bindingSpecifier: .keyword(.let),
pattern: PatternSyntax("x"),
initializer: InitializerClauseSyntax(value: ExprSyntax("y"))
)
}
) {}
assertBuildResult(
buildable,
"""
if let x = y {
}
"""
)
}
func testIfCaseStmt() {
let buildable = IfExprSyntax(
conditions: ConditionElementListSyntax {
MatchingPatternConditionSyntax(
pattern: ExpressionPatternSyntax(expression: MemberAccessExprSyntax(name: "x")),
initializer: InitializerClauseSyntax(value: ExprSyntax("y"))
)
}
) {}
assertBuildResult(
buildable,
"""
if case .x = y {
}
"""
)
}
}
|
