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import XCTest
@testable import WIT
class ParseInterfaceTests: XCTestCase {
func parse(_ text: String) throws -> SyntaxNode<InterfaceSyntax> {
var lexer = Lexer(cursor: .init(input: text))
return try InterfaceSyntax.parse(
lexer: &lexer,
documents: DocumentsSyntax(comments: [])
)
}
func testEmpty() throws {
let iface = try parse("interface empty {}")
XCTAssertEqual(iface.name.text, "empty")
XCTAssertEqual(iface.items.count, 0)
}
func testMultipleItems() throws {
let iface = try parse(
"""
interface x {
type t1 = u8
type t2 = u8
}
"""
)
XCTAssertEqual(iface.name.text, "x")
XCTAssertEqual(iface.items.count, 2)
}
func testWithComment() throws {
let iface = try parse(
"""
interface x {
// doc comment here
f1: func()
}
"""
)
XCTAssertEqual(iface.name.text, "x")
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .function(function) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(function.documents.comments.count, 1)
}
func testInvalidItem() throws {
XCTAssertThrowsError(try parse("interface x { . }"))
}
func testItemType() throws {
let iface = try parse(
"""
interface x {
type t1 = u8
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .typeDef(typeDef) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(typeDef.name.text, "t1")
}
func testItemFlags() throws {
let iface = try parse(
"""
interface x {
flags f1 {
b0,
}
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .typeDef(typeDef) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(typeDef.name.text, "f1")
}
func testItemEnum() throws {
let iface = try parse(
"""
interface x {
enum e1 {
c1,
}
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .typeDef(typeDef) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(typeDef.name.text, "e1")
}
func testItemVariant() throws {
let iface = try parse(
"""
interface x {
variant v1 {
c1,
}
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .typeDef(typeDef) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(typeDef.name.text, "v1")
}
func testItemResource() throws {
let iface = try parse(
"""
interface x {
resource rs1
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .typeDef(typeDef) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(typeDef.name.text, "rs1")
}
func testItemRecord() throws {
let iface = try parse(
"""
interface x {
record rc1 {
f1: u8
}
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .typeDef(typeDef) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(typeDef.name.text, "rc1")
}
func testItemUnion() throws {
let iface = try parse(
"""
interface x {
union u1 {
u8,
bool
}
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .typeDef(typeDef) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(typeDef.name.text, "u1")
}
func testItemFunction() throws {
let iface = try parse(
"""
interface x {
f1: func(arg: string)
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .function(function) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(function.name.text, "f1")
}
func testItemUse() throws {
let iface = try parse(
"""
interface x {
use pkg1.{thing}
}
"""
)
XCTAssertEqual(iface.items.count, 1)
let item = iface.items[0]
guard case let .use(use) = item else {
XCTFail("unexpected item type: \(item)")
return
}
XCTAssertEqual(use.from.name.text, "pkg1")
}
}
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