Add PUT request tests

Author: mathare

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

@@ -73,6 +73,55 @@ Feature: Posts Endpoint
     Then the response has a status code of 200
     And the response body is an empty JSON object
 
+  Scenario: Update post with empty request body
+  # This API isn't backed by a working data source so there is no follow up GET request to confirm that the
+  # post has been properly updated in the back end
+    When I make a PUT request with an empty body to the Posts endpoint with a path parameter of 1
+    Then the response has a status code of 200
+    And the response body matches the following
+      | key | value |
+      | id  | 1     |
+
+  Scenario: Update post with partial request body
+    When I make a PUT request with the following body to the Posts endpoint with a path parameter of 1
+      | key   | value                  |
+      | title | Updated Post Title     |
+      | body  | Updated post body text |
+    Then the response has a status code of 200
+    And the response body matches the following
+      | key   | value                  |
+      | id    | 1                      |
+      | title | Updated Post Title     |
+      | body  | Updated post body text |
+
+  Scenario: Update post with full request body
+    When I make a PUT request with the following body to the Posts endpoint with a path parameter of 1
+      | key    | value                  |
+      | title  | Updated Post Title     |
+      | body   | Updated post body text |
+      | userId | 5                      |
+    Then the response has a status code of 200
+    And the response body matches the following
+      | key    | value                  |
+      | id     | 1                      |
+      | title  | Updated Post Title     |
+      | body   | Updated post body text |
+      | userId | 5                      |
+
+  Scenario: Update post with invalid fields in request body
+  # As this API isn't linked to a working data source there is no validation of the field names passed in via the
+  # request body. If this were a fully working API I would expect this to raise an error
+    When I make a PUT request with the following body to the Posts endpoint with a path parameter of 1
+      | key   | value     |
+      | key_1 | New value |
+      | key_2 | New value |
+    Then the response has a status code of 200
+    And the response body matches the following
+      | key   | value     |
+      | id    | 1         |
+      | key_1 | New value |
+      | key_2 | New value |
+
   Scenario Outline: Delete post with invalid ID - post #<ID>
   # As this is a fake API without an underlying data source that updates based on the API requests, a delete request
   # returns a success response regardless of the post ID passed in via the path parameters. This should raise an error

src/test/java/com/typicode/jsonplaceholder/helpers/RequestHelpers.java

@@ -27,6 +27,7 @@ public static HttpResponse<String> sendGetRequestTo(String endpoint) {
     public static HttpResponse<String> sendPutRequestTo(String endpoint, String body) {
         HttpRequest request = HttpRequest.newBuilder()
                 .PUT(HttpRequest.BodyPublishers.ofString(body))
+                .header("Content-Type", "application/json")
                 .uri(URI.create(BASE_URL + endpoint))
                 .build();
         try {
@@ -40,6 +41,7 @@ public static HttpResponse<String> sendPutRequestTo(String endpoint, String body
     public static HttpResponse<String> sendPostRequestTo(String endpoint, String body) {
         HttpRequest request = HttpRequest.newBuilder()
                 .POST(HttpRequest.BodyPublishers.ofString(body))
+                .header("Content-Type", "application/json")
                 .uri(URI.create(BASE_URL + endpoint))
                 .build();
         try {

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

@@ -82,6 +82,15 @@ public static void makeRequestWithEmptyBody(String requestType, String endpoint,
         responses.add(response);
     }
 
+    @When("^I make a (POST|PUT) request with the following body to the (Posts|Comments|Albums|Photos|ToDos|Users) endpoint with a path parameter of (-?\\d+)$")
+    public static void makeRequestWithEmptyBody(String requestType, String endpoint, int pathParam, DataTable dataTable) {
+        Map<String, String> requestBodyMap = dataTable.subTable(1, 0).asMap(String.class, String.class);
+        JSONObject requestBody = new JSONObject(requestBodyMap);
+        response = requestType.equals("POST") ?
+                RequestHelpers.sendPostRequestTo(endpoints.get(endpoint) + "/" + pathParam, requestBody.toString()) :
+                RequestHelpers.sendPutRequestTo(endpoints.get(endpoint) + "/" + pathParam, requestBody.toString());
+        responses.add(response);
+    }
 
 
     @Then("the response has a status code of {int}")