test: add talk config contract fixtures

apps/shared/OpenClawKit/Tests/OpenClawKitTests/TalkConfigContractTests.swift

@@ -0,0 +1,60 @@
+import Foundation
+import OpenClawKit
+import Testing
+
+private struct TalkConfigContractFixture: Decodable {
+    let selectionCases: [SelectionCase]
+
+    struct SelectionCase: Decodable {
+        let id: String
+        let defaultProvider: String
+        let payloadValid: Bool
+        let expectedSelection: ExpectedSelection?
+        let talk: [String: AnyCodable]
+    }
+
+    struct ExpectedSelection: Decodable {
+        let provider: String
+        let normalizedPayload: Bool
+        let voiceId: String?
+    }
+}
+
+private enum TalkConfigContractFixtureLoader {
+    static func load() throws -> TalkConfigContractFixture {
+        let fixtureURL = try self.findFixtureURL(startingAt: URL(fileURLWithPath: #filePath))
+        let data = try Data(contentsOf: fixtureURL)
+        return try JSONDecoder().decode(TalkConfigContractFixture.self, from: data)
+    }
+
+    private static func findFixtureURL(startingAt fileURL: URL) throws -> URL {
+        var directory = fileURL.deletingLastPathComponent()
+        while directory.path != "/" {
+            let candidate = directory.appendingPathComponent("test-fixtures/talk-config-contract.json")
+            if FileManager.default.fileExists(atPath: candidate.path) {
+                return candidate
+            }
+            directory.deleteLastPathComponent()
+        }
+        throw NSError(domain: "TalkConfigContractFixtureLoader", code: 1)
+    }
+}
+
+struct TalkConfigContractTests {
+    @Test func selectionFixtures() throws {
+        for fixture in try TalkConfigContractFixtureLoader.load().selectionCases {
+            let selection = TalkConfigParsing.selectProviderConfig(
+                fixture.talk,
+                defaultProvider: fixture.defaultProvider)
+            if let expected = fixture.expectedSelection {
+                #expect(selection != nil)
+                #expect(selection?.provider == expected.provider)
+                #expect(selection?.normalizedPayload == expected.normalizedPayload)
+                #expect(selection?.config["voiceId"]?.stringValue == expected.voiceId)
+            } else {
+                #expect(selection == nil)
+            }
+            #expect(fixture.payloadValid == (selection != nil))
+        }
+    }
+}