Add Equatable conformance and check equality in test

Author: andrewheard

FirebaseVertexAI/Sources/FunctionCalling.swift

@@ -19,7 +19,7 @@ import Foundation
 /// This `FunctionDeclaration` is a representation of a block of code that can be used as a ``Tool``
 /// by the model and executed by the client.
 @available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
-public struct FunctionDeclaration {
+public struct FunctionDeclaration: Equatable {
   /// The name of the function.
   let name: String
 

FirebaseVertexAI/Sources/Types/Public/Schema.swift

@@ -331,3 +331,15 @@ extension Schema: Codable {
     case requiredProperties = "required"
   }
 }
+
+// MARK: - Equatable Conformance
+
+@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
+extension Schema: Equatable {
+  public static func == (lhs: Schema, rhs: Schema) -> Bool {
+    return lhs.dataType == rhs.dataType && lhs.format == rhs.format
+      && lhs.description == rhs.description && lhs.nullable == rhs.nullable
+      && lhs.enumValues == rhs.enumValues && lhs.items == rhs.items
+      && lhs.properties == rhs.properties && lhs.requiredProperties == rhs.requiredProperties
+  }
+}

FirebaseVertexAI/Tests/Unit/Snippets/FunctionCallingSnippets.swift

@@ -29,27 +29,6 @@ final class FunctionCallingSnippets: XCTestCase {
     await FirebaseApp.deleteDefaultAppForSnippets()
   }
 
-  func testFunctionDeclaration_jsonString() throws {
-    let json = """
-    {
-      "name": "getWeather",
-      "description": "gets the weather for a requested city",
-      "parameters": {
-        "type": "OBJECT",
-        "properties": {
-          "city": {
-            "type": "STRING"
-          }
-        }
-      }
-    }
-    """
-
-    let functionDeclaration = try FunctionDeclaration(jsonString: json)
-
-    print(functionDeclaration)
-  }
-
   func testFunctionCalling() async throws {
     // This function calls a hypothetical external API that returns
     // a collection of weather information for a given location on a given date.

FirebaseVertexAI/Tests/Unit/Types/FunctionDeclarationTests.swift

@@ -0,0 +1,48 @@
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import FirebaseVertexAI
+import XCTest
+
+@available(iOS 15.0, macOS 12.0, macCatalyst 15.0, tvOS 15.0, watchOS 8.0, *)
+final class FunctionDeclarationTests: XCTestCase {
+  func testFunctionDeclaration_jsonString() throws {
+    let json = """
+    {
+      "name": "getWeather",
+      "description": "gets the weather for a requested city",
+      "parameters": {
+        "type": "OBJECT",
+        "properties": {
+          "city": {
+            "type": "STRING",
+            "nullable": false
+          }
+        },
+        "nullable": false,
+        "required": ["city"]
+      }
+    }
+    """
+    let expectedFunctionDeclaration = FunctionDeclaration(
+      name: "getWeather",
+      description: "gets the weather for a requested city",
+      parameters: ["city": .string()]
+    )
+
+    let functionDeclaration = try FunctionDeclaration(jsonString: json)
+
+    XCTAssertEqual(functionDeclaration, expectedFunctionDeclaration)
+  }
+}