Testsを追加

Tests/NodeTests/NodeTests.swift

@@ -2,10 +2,44 @@ import XCTest
 @testable import Node
 
 final class NodeTests: XCTestCase {
-    func testExample() throws {
-        // This is an example of a functional test case.
-        // Use XCTAssert and related functions to verify your tests produce the correct
-        // results.
-        XCTAssertEqual(Node().text, "Hello, World!")
-    }
+  func testExample() throws {
+    let inputDatas: [String: String?] = [
+      "1": nil,
+      "2": "1",
+      "3": "2",
+      "4": "1",
+      "5": "4",
+      "6": "5"
+    ]
+    
+    let sources: [TweetNodeSource] = inputDatas.filter { $0.value != nil }.map { .init(id: $0.key, parentID: $0.value!) }
+    
+    let topNode = inputDatas.first { $0.value == nil }!
+    var node: TweetNode = .init(id: topNode.key)
+    node.setAllData(sources: sources)
+    
+    print(node)
+    XCTAssertEqual(node, TweetNode(id: "1", children: [.init(id: "2", children: [.init(id: "3")]), .init(id: "4", children: [.init(id: "5", children: [.init(id: "6")])])]))
+  }
+}
+
+struct TweetNodeSource: NodeSource {
+  let id: String
+  let parentID: String
+}
+
+struct TweetNode: Node, Equatable {
+  let id: String
+  var children: [TweetNode]
+  typealias Source = TweetNodeSource
+  
+  init(id: String) {
+    self.id = id
+    self.children = []
+  }
+  
+  init(id: String, children: [TweetNode] = []) {
+    self.id = id
+    self.children = children
+  }
 }