Setup tests

Package.swift

@@ -15,7 +15,7 @@ let package = Package(
             name: "DOMKit",
             targets: ["DOMKit"]),
         .library(name: "WebIDL", targets: ["WebIDL"]),
-        .executable(name: "WebIDLToSwift", targets: ["WebIDLToSwift"]),
+        .executable(name: "idl2swift", targets: ["idl2swift"]),
     ],
     dependencies: [
         .package(
@@ -37,8 +37,13 @@ let package = Package(
         .target(
             name: "WebIDLToSwift",
             dependencies: ["WebIDL"]),
+        .target(
+            name: "idl2swift",
+            dependencies: ["WebIDLToSwift"]),
         .testTarget(
             name: "DOMKitTests",
             dependencies: ["DOMKit"]),
+        .testTarget(
+            name: "WebIDLToSwiftTests", dependencies: ["WebIDLToSwift"]),
     ]
 )

Sources/WebIDL/GenericCollection.swift

@@ -7,6 +7,10 @@ public struct GenericCollection<Element>: Collection, Decodable {
     public subscript(index: Array.Index) -> Element { array[index] as! Element }
     public func index(after index: Array.Index) -> Array.Index { array.index(after: index) }
 
+    init(_ array: [IDLNode]) {
+        self.array = array
+    }
+
     public init(from decoder: Decoder) throws {
         let wrappers = try decoder.singleValueContainer().decode([IDLNodeDecoder].self)
         array = wrappers.map(\.node)

Sources/WebIDLToSwift/main.swift → Sources/WebIDLToSwift/Command.swift

@@ -10,9 +10,7 @@ func parseOptions() -> [(name: String, path: URL)] {
     }
 }
 
-main()
-
-func main() {
+public func main() {
     do {
         let idlInputs = parseOptions()
         Record.reset()

Sources/WebIDLToSwift/IDLParser.swift

@@ -23,25 +23,12 @@ enum IDLParser {
         return try JSONDecoder().decode(GenericCollection<IDLNode>.self, from: data)
     }
 
-    static func defaultIDLs() -> [(name: String, path: URL)] {
-        let enabledIDLs = [
-            "fetch",
-            "geometry",
-            "hr-time",
-            "referrer-policy",
-            "uievents",
-            "wai-aria",
-            "web-animations",
-            "xhr",
-            "service-workers",
-            "streams",
-            "dom",
-            "html",
-            "webidl",
-            "url",
-            "console",
-            "FileAPI"
-        ]
+    static let defaultEnabledIDLs = [
+        "fetch", "geometry", "hr-time", "referrer-policy", "uievents", "wai-aria",
+        "web-animations", "xhr", "service-workers", "streams", "dom", "html",
+        "webidl", "url", "console", "FileAPI"
+    ]
+    static func defaultIDLs(enabledIDLs: [String] = defaultEnabledIDLs) -> [(name: String, path: URL)] {
         return enabledIDLs.map { idl in
             let path = packageDir
                 .appendingPathComponent("node_modules")

Sources/idl2swift/main.swift

@@ -0,0 +1,3 @@
+import WebIDLToSwift
+
+WebIDLToSwift.main()

Tests/WebIDLToSwiftTests/WebIDLToSwiftTests.swift

@@ -0,0 +1,14 @@
+@testable import WebIDLToSwift
+@testable import WebIDL
+import XCTest
+
+final class WebIDLToSwiftTests: XCTestCase {
+    func testDeclGraph() throws {
+        let idlPaths = IDLParser.defaultIDLs(enabledIDLs: ["url"])
+        let idls = try idlPaths.map {
+            ($0.name, try IDLParser.parseIDL(path: $0.path))
+        }
+        let graph = DeclGraph.build(from: idls.map { ($0, $1.array) })
+
+    }
+}