Verify single post response against file

Author: mathare

src/test/java/com/typicode/jsonplaceholder/features/Posts.feature

@@ -7,3 +7,9 @@ Feature: Posts Endpoint
     And the results array contains 100 elements
     And the response body matches the "GetAllPosts" expected response
 
+  Scenario: Verify single post against expected response in file
+    When I make a GET request to the Posts endpoint with a path parameter of 1
+    Then the response has a status code of 200
+    And the response body follows the "GetSinglePost" JSON schema
+    And the response body matches the 1st post in the "GetAllPosts" expected response
+

src/test/java/com/typicode/jsonplaceholder/steps/CommonSteps.java

@@ -57,6 +57,11 @@ public static void makeGetRequest(String endpoint) {
         response = RequestHelpers.sendGetRequestTo(endpoints.get(endpoint));
         responses.add(response);
     }
+    @When("^I make a GET request to the (Posts|Comments|Albums|Photos|ToDos|Users) endpoint with a path parameter of (\\d+)$")
+    public static void makeGetRequestWithPathParameter(String endpoint, int pathParam) {
+        response = RequestHelpers.sendGetRequestTo(endpoints.get(endpoint) + "/" + pathParam);
+        responses.add(response);
+    }
     @Then("the response has a status code of {int}")
     public static void verifyResponseStatusCode(int code) {
         assertEquals(code, response.statusCode());
@@ -82,11 +87,20 @@ public static void verifyNumberOfResultsArrayElements(int numElements) {
     }
 
     @Then("the response body matches the {string} expected response")
-    public static void verifyResponseBodyAgainstExpectedResponse(String type) throws IOException {
-        String filename = EXPECTED_RESPONSES_DIR + type.replaceAll(" ", "") + "Response.json";
+    public static void verifyResponseBodyAgainstExpectedResponse(String expectedResponse) throws IOException {
+        String filename = EXPECTED_RESPONSES_DIR + expectedResponse.replaceAll(" ", "") + "Response.json";
         String json = Files.readString(new File(filename).toPath());
         assertEquals(json.replace("\r", ""), response.body());
     }
 
+    @Then("^the response body matches the (\\d+).{2} post in the \"(.*)\" expected response$")
+    public static void verifyResponseBodyAgainstPartOfExpectedResponse(int index, String expectedResponse) throws IOException {
+        String filename = EXPECTED_RESPONSES_DIR + expectedResponse.replaceAll(" ", "") + "Response.json";
+        String json = Files.readString(new File(filename).toPath());
+        JSONObject expected = new JSONArray(json).getJSONObject(index - 1);
+        JSONObject actual = new JSONObject(response.body());
+        assertEquals(expected.toString(), actual.toString());
+    }
+
 
 }

src/test/resources/schemas/GetSinglePostSchema.json

@@ -0,0 +1,24 @@
+{
+  "type": "object",
+  "properties": {
+    "userId": {
+      "type": "integer"
+    },
+    "id": {
+      "type": "integer"
+    },
+    "title": {
+      "type": "string"
+    },
+    "body": {
+      "type": "string"
+    }
+  },
+  "required": [
+    "userId",
+    "id",
+    "title",
+    "body"
+  ],
+  "additionalProperties": false
+}