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//===----------------------------------------------------------------------===//
//
// This source file is part of the Swift.org open source project
//
// Copyright (c) 2014 - 2021 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 SourceKitLSP
import XCTest
final class InlayHintTests: XCTestCase {
// MARK: - Helpers
func performInlayHintRequest(text: String, range: Range<Position>? = nil) async throws -> [InlayHint] {
let testClient = try await TestSourceKitLSPClient()
let uri = DocumentURI(for: .swift)
testClient.openDocument(text, uri: uri)
let request = InlayHintRequest(textDocument: TextDocumentIdentifier(uri), range: range)
return try await testClient.send(request)
}
private func makeInlayHint(
position: Position,
kind: InlayHintKind,
label: String,
hasEdit: Bool = true
) -> InlayHint {
let textEdits: [TextEdit]?
if hasEdit {
textEdits = [TextEdit(range: position..<position, newText: label)]
} else {
textEdits = nil
}
return InlayHint(
position: position,
label: .string(label),
kind: kind,
textEdits: textEdits
)
}
// MARK: - Tests
func testEmpty() async throws {
let text = ""
let hints = try await performInlayHintRequest(text: text)
XCTAssertEqual(hints, [])
}
func testBindings() async throws {
let text = """
let x = 4
var y = "test" + "123"
"""
let hints = try await performInlayHintRequest(text: text)
XCTAssertEqual(
hints,
[
makeInlayHint(
position: Position(line: 0, utf16index: 5),
kind: .type,
label: ": Int"
),
makeInlayHint(
position: Position(line: 1, utf16index: 5),
kind: .type,
label: ": String"
),
]
)
}
func testRanged() async throws {
let text = """
func square(_ x: Double) -> Double {
let result = x * x
return result
}
func collatz(_ n: Int) -> Int {
let even = n % 2 == 0
let result = even ? (n / 2) : (3 * n + 1)
return result
}
"""
let range = Position(line: 6, utf16index: 0)..<Position(line: 9, utf16index: 0)
let hints = try await performInlayHintRequest(text: text, range: range)
XCTAssertEqual(
hints,
[
makeInlayHint(
position: Position(line: 6, utf16index: 10),
kind: .type,
label: ": Bool"
),
makeInlayHint(
position: Position(line: 7, utf16index: 12),
kind: .type,
label: ": Int"
),
]
)
}
func testFields() async throws {
let text = """
class X {
let instanceMember = 3
static let staticMember = "abc"
}
struct Y {
var instanceMember = "def" + "ghi"
static let staticMember = 1 + 2
}
enum Z {
static let staticMember = 3.0
}
"""
let hints = try await performInlayHintRequest(text: text)
XCTAssertEqual(
hints,
[
makeInlayHint(
position: Position(line: 1, utf16index: 20),
kind: .type,
label: ": Int"
),
makeInlayHint(
position: Position(line: 2, utf16index: 25),
kind: .type,
label: ": String"
),
makeInlayHint(
position: Position(line: 6, utf16index: 20),
kind: .type,
label: ": String"
),
makeInlayHint(
position: Position(line: 7, utf16index: 25),
kind: .type,
label: ": Int"
),
makeInlayHint(
position: Position(line: 11, utf16index: 25),
kind: .type,
label: ": Double"
),
]
)
}
func testExplicitTypeAnnotation() async throws {
let text = """
let x: String = "abc"
struct X {
var y: Int = 34
}
"""
let hints = try await performInlayHintRequest(text: text)
XCTAssertEqual(hints, [])
}
func testClosureParams() async throws {
let text = """
func f(x: Int) {}
let g = { (x: Int) in }
let h: (String) -> String = { x in x }
let i: (Double, Double) -> Double = { (x, y) in
x + y
}
"""
let hints = try await performInlayHintRequest(text: text)
XCTAssertEqual(
hints,
[
makeInlayHint(
position: Position(line: 2, utf16index: 5),
kind: .type,
label: ": (Int) -> ()"
),
makeInlayHint(
position: Position(line: 3, utf16index: 31),
kind: .type,
label: ": String",
hasEdit: false
),
makeInlayHint(
position: Position(line: 4, utf16index: 40),
kind: .type,
label: ": Double"
),
makeInlayHint(
position: Position(line: 4, utf16index: 43),
kind: .type,
label: ": Double"
),
]
)
}
}
|
