cursor tests

Tests/GraphQLPaginationTests/CursorTests.swift

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+import CustomDump
+import XCTest
+
+@testable import GraphQLPagination
+
+final class CursorTests: XCTestCase {
+
+    func test_string() throws {
+        let id = Cursor(rawValue: "testing123")
+
+        XCTAssertEqual(id.rawValue, "testing123")
+        XCTAssertEqual(id.description, "dGVzdGluZzEyMw==")
+
+        XCTAssertEqual(
+            String(data: try JSONEncoder().encode(id), encoding: .utf8),
+            """
+            "dGVzdGluZzEyMw=="
+            """
+        )
+    }
+
+    func test_intValue() throws {
+        let id = Cursor(intValue: 3)
+
+        XCTAssertEqual(id.rawValue, "3")
+        XCTAssertEqual(id.description, "Mw==")
+
+        XCTAssertEqual(
+            String(data: try JSONEncoder().encode(id), encoding: .utf8),
+            """
+            "Mw=="
+            """
+        )
+    }
+
+    func test_coding_roundtrip() throws {
+        let id = Cursor(rawValue: "testing123")
+        let encoded = try JSONEncoder().encode(id)
+        let decoded = try JSONDecoder().decode(Cursor.self, from: encoded)
+        XCTAssertNoDifference(id, decoded)
+    }
+
+    func test_intValue_valid() {
+        let id = Cursor(intValue: 3)
+        XCTAssertEqual(id.intValue(), 3)
+    }
+    func test_intValue_invalid() {
+        let id = Cursor(rawValue: "foo")
+        XCTAssertEqual(id.intValue(), nil)
+    }
+}