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FoldingRangeTests.swift
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FoldingRangeTests.swift
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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2018 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 LSPTestSupport
import LanguageServerProtocol
import SKTestSupport
import XCTest
struct FoldingRangeSpec {
let startMarker: String
let endMarker: String
let kind: FoldingRangeKind?
/// The test file in which this ``FoldingRangeSpec`` was created
let originatorFile: StaticString
/// The line in which this ``FoldingRangeSpec`` was created
let originatorLine: UInt
init(
from startMarker: String,
to endMarker: String,
kind: FoldingRangeKind? = nil,
originatorFile: StaticString = #file,
originatorLine: UInt = #line
) {
self.startMarker = startMarker
self.endMarker = endMarker
self.kind = kind
self.originatorFile = originatorFile
self.originatorLine = originatorLine
}
}
func assertFoldingRanges(
markedSource: String,
expectedRanges: [FoldingRangeSpec],
rangeLimit: Int? = nil,
lineFoldingOnly: Bool = false,
file: StaticString = #file,
line: UInt = #line
) async throws {
let capabilities = ClientCapabilities(
textDocument: TextDocumentClientCapabilities(
foldingRange: TextDocumentClientCapabilities.FoldingRange(
rangeLimit: rangeLimit,
lineFoldingOnly: lineFoldingOnly
)
)
)
let testClient = try await TestSourceKitLSPClient(capabilities: capabilities)
let uri = DocumentURI(for: .swift)
let positions = testClient.openDocument(markedSource, uri: uri)
let foldingRanges = try unwrap(await testClient.send(FoldingRangeRequest(textDocument: TextDocumentIdentifier(uri))))
if foldingRanges.count != expectedRanges.count {
XCTFail(
"""
Expected \(expectedRanges.count) ranges but got \(foldingRanges.count)
\(foldingRanges)
""",
file: file,
line: line
)
return
}
for (expected, actual) in zip(expectedRanges, foldingRanges) {
let startPosition = positions[expected.startMarker]
let endPosition = positions[expected.endMarker]
let expectedRange = FoldingRange(
startLine: startPosition.line,
startUTF16Index: lineFoldingOnly ? nil : startPosition.utf16index,
endLine: endPosition.line,
endUTF16Index: lineFoldingOnly ? nil : endPosition.utf16index,
kind: expected.kind,
collapsedText: nil
)
XCTAssertEqual(actual, expectedRange, file: expected.originatorFile, line: expected.originatorLine)
}
}
final class FoldingRangeTests: XCTestCase {
func testNoRanges() async throws {
try await assertFoldingRanges(markedSource: "", expectedRanges: [])
}
func testLineFolding() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣func foo() {
2️⃣
}
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣")
],
lineFoldingOnly: true
)
}
func testLineFoldingOfFunctionWithMultiLineParameters() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣func foo(
2️⃣ param: Int
3️⃣) {
print(param)
4️⃣
}
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣"),
FoldingRangeSpec(from: "3️⃣", to: "4️⃣"),
],
lineFoldingOnly: true
)
}
func testLineFoldingOfComment() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣// abc
// def
2️⃣// ghi
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣", kind: .comment)
],
lineFoldingOnly: true
)
}
func testLineFoldingOfCommentAtEndOfFile() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣// abc
// def
2️⃣// ghi
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣", kind: .comment)
],
lineFoldingOnly: true
)
}
func testLineFoldingDoesntReportSingleLine() async throws {
try await assertFoldingRanges(
markedSource: """
guard a > 0 else { 1️⃣return 2️⃣}
"""
,
expectedRanges: [],
lineFoldingOnly: true
)
}
func testRangeLimit() async throws {
let input = """
func one() -> 1 {1️⃣
return 1
2️⃣}
func two() -> Int {3️⃣
return 2
4️⃣}
func three() -> Int {5️⃣
return 3
6️⃣}
"""
try await assertFoldingRanges(markedSource: input, expectedRanges: [], rangeLimit: -100)
try await assertFoldingRanges(markedSource: input, expectedRanges: [], rangeLimit: 0)
try await assertFoldingRanges(
markedSource: input,
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣")
],
rangeLimit: 1
)
try await assertFoldingRanges(
markedSource: input,
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣"),
FoldingRangeSpec(from: "3️⃣", to: "4️⃣"),
],
rangeLimit: 2
)
let allRanges = [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣"),
FoldingRangeSpec(from: "3️⃣", to: "4️⃣"),
FoldingRangeSpec(from: "5️⃣", to: "6️⃣"),
]
try await assertFoldingRanges(markedSource: input, expectedRanges: allRanges, rangeLimit: 100)
try await assertFoldingRanges(markedSource: input, expectedRanges: allRanges, rangeLimit: nil)
}
func testMultilineDocBlockComment() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣/**
DC2
- Parameter param: DC2
- Throws: DC2
DC2
DC2
- Returns: DC2
*/2️⃣
"""
,
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣", kind: .comment)
]
)
}
func testTwoDifferentCommentStyles() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣//c1
//c22️⃣
3️⃣/*
c3
*/4️⃣
"""
,
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣", kind: .comment),
FoldingRangeSpec(from: "3️⃣", to: "4️⃣", kind: .comment),
]
)
}
func testMultilineDocLineComment() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣/// Do some fancy stuff
///
/// This does very fancy stuff. Use it when building a great app.2️⃣
"""
,
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣", kind: .comment)
]
)
}
func testConsecutiveLineCommentsSeparatedByEmptyLine() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣// Some comment
// And some more test 2️⃣
3️⃣// And another comment separated by newlines4️⃣
func foo() {}
"""
,
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣", kind: .comment),
FoldingRangeSpec(from: "3️⃣", to: "4️⃣", kind: .comment),
]
)
}
func testFoldGuardBody() async throws {
try await assertFoldingRanges(
markedSource: """
guard a > 0 else {1️⃣ return 2️⃣}
"""
,
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣")
]
)
}
func testDontReportDuplicateRangesRanges() async throws {
// In this file the range of the call to `print` and the range of the argument are the same.
// Test that we only report the folding range once.
try await assertFoldingRanges(
markedSource: """
func foo() {1️⃣
print(2️⃣"hello world"3️⃣)
4️⃣}
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "4️⃣"),
FoldingRangeSpec(from: "2️⃣", to: "3️⃣"),
]
)
}
func testFoldCollections() async throws {
try await assertFoldingRanges(
markedSource: """
let x = [1️⃣1, 2, 32️⃣]
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣")
]
)
try await assertFoldingRanges(
markedSource: """
let x = [1️⃣
1: "one",
2: "two",
3: "three"
2️⃣]
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣")
]
)
}
func testFoldSwitchCase() async throws {
try await assertFoldingRanges(
markedSource: """
switch foo {1️⃣
case 1:2️⃣
break 3️⃣
default:4️⃣
let x = 1
print(5️⃣x6️⃣)7️⃣
8️⃣}
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "8️⃣"),
FoldingRangeSpec(from: "2️⃣", to: "3️⃣"),
FoldingRangeSpec(from: "4️⃣", to: "7️⃣"),
FoldingRangeSpec(from: "5️⃣", to: "6️⃣"),
]
)
}
func testFoldArgumentLabelsOnMultipleLines() async throws {
try await assertFoldingRanges(
markedSource: """
print(1️⃣
"x"
2️⃣)
""",
expectedRanges: [FoldingRangeSpec(from: "1️⃣", to: "2️⃣")]
)
}
func testFoldCallWithTrailingClosure() async throws {
try await assertFoldingRanges(
markedSource: """
doSomething(1️⃣normalArg: 12️⃣) {3️⃣
_ = $0
4️⃣}
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣"),
FoldingRangeSpec(from: "3️⃣", to: "4️⃣"),
]
)
}
func testFoldCallWithMultipleTrailingClosures() async throws {
try await assertFoldingRanges(
markedSource: """
doSomething(1️⃣normalArg: 12️⃣) {3️⃣
_ = $0
4️⃣}
additionalTrailing: {5️⃣
_ = $0
6️⃣}
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣"),
FoldingRangeSpec(from: "3️⃣", to: "4️⃣"),
FoldingRangeSpec(from: "5️⃣", to: "6️⃣"),
]
)
}
func testFoldArgumentsOfFunction() async throws {
try await assertFoldingRanges(
markedSource: """
func foo(1️⃣
arg1: Int,
arg2: Int
2️⃣)
""",
expectedRanges: [FoldingRangeSpec(from: "1️⃣", to: "2️⃣")]
)
}
func testFoldArgumentsForConditionalIfCompileDirectives() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣#if DEBUG
let foo = "x"
2️⃣#endif
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣")
]
)
}
func testFoldArgumentsForConditionalElseIfCompileDirectives() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣#if DEBUG
let foo = "x"
2️⃣#elseif TEST
let foo = "y"
3️⃣#else
let foo = "z"
4️⃣#endif
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣"),
FoldingRangeSpec(from: "2️⃣", to: "3️⃣"),
FoldingRangeSpec(from: "3️⃣", to: "4️⃣"),
]
)
}
func testFoldArgumentsForConditionalElseCompileDirectives() async throws {
try await assertFoldingRanges(
markedSource: """
1️⃣#if DEBUG
let foo = "x"
2️⃣#else
let foo = "y"
3️⃣#endif
""",
expectedRanges: [
FoldingRangeSpec(from: "1️⃣", to: "2️⃣"),
FoldingRangeSpec(from: "2️⃣", to: "3️⃣"),
]
)
}
}