# 42 - Add ExtractJson method - string from json path

- Introduced method 'string-from-json-path' in group: 'extractJson'.
- Improved error message in method 'body-contains-text' in group: 'assert'

Author: miroslavpojer

README.md

@@ -313,6 +313,13 @@ line break:\\nAnd a tab:\\tEnd            ....    Matches the string "line break
     - jsonKey: The key in the JSON object from which to extract the string.
     - runtimeCacheLevel: The expiration level to use when storing the extracted string in the runtime cache. [Global, Suite, Test]
 
+- `extractJson.string-from-json-path`
+  - description: Extracts a string from a JSON response at a given json path and stores it in a runtime cache with a given key and expiration level.
+  - arguments:
+    - cacheKey: The key to use when storing the extracted string in the runtime cache.
+    - jsonPath: The json path in the JSON from which to extract the string.
+    - runtimeCacheLevel: The expiration level to use when storing the extracted string in the runtime cache. [Global, Suite, Test]
+
 
 ## Known issue
 - Error in Response.perform.

testApi/src/main/resources/schema/after.schema.json

@@ -121,7 +121,7 @@
       "properties": {
         "method": {
           "type": "string",
-          "enum": ["assert.response-time-is-below", "assert.response-time-is-above", "assert.status-code-equals", "assert.status-code-is-success", "assert.status-code-is-client-error", "assert.status-code-is-server-error", "assert.header-exists", "assert.header-value-equals", "assert.content-type-is-json", "assert.content-type-is-xml", "assert.content-type-is-html", "assert.cookie-exists", "assert.cookie-value-equals", "assert.cookie-is-secured", "assert.cookie-is-not-secured", "assert.body-equals", "assert.body-contains-text", "assert.body-is-empty", "assert.body-is-not-empty", "assert.body-length-equals", "assert.body-starts-with", "assert.body-ends-with", "assert.body-matches-regex", "assert.body-json-is-json-array", "assert.body-json-is-json-object", "assert.body-json-path-exists", "log.error", "log.warn", "log.info", "log.debug", "log.log-info-response", "extractJson.string-from-list"],
+          "enum": ["assert.response-time-is-below", "assert.response-time-is-above", "assert.status-code-equals", "assert.status-code-is-success", "assert.status-code-is-client-error", "assert.status-code-is-server-error", "assert.header-exists", "assert.header-value-equals", "assert.content-type-is-json", "assert.content-type-is-xml", "assert.content-type-is-html", "assert.cookie-exists", "assert.cookie-value-equals", "assert.cookie-is-secured", "assert.cookie-is-not-secured", "assert.body-equals", "assert.body-contains-text", "assert.body-is-empty", "assert.body-is-not-empty", "assert.body-length-equals", "assert.body-starts-with", "assert.body-ends-with", "assert.body-matches-regex", "assert.body-json-is-json-array", "assert.body-json-is-json-object", "assert.body-json-path-exists", "log.error", "log.warn", "log.info", "log.debug", "log.log-info-response", "extractJson.string-from-list", "extractJson.string-from-json-path"],
           "description": "The method to be used for the response action. Restricted to specific values."
         }
       },

testApi/src/main/resources/schema/before.schema.json

@@ -119,7 +119,7 @@
       "properties": {
         "method": {
           "type": "string",
-          "enum": ["assert.response-time-is-below", "assert.response-time-is-above", "assert.status-code-equals", "assert.status-code-is-success", "assert.status-code-is-client-error", "assert.status-code-is-server-error", "assert.header-exists", "assert.header-value-equals", "assert.content-type-is-json", "assert.content-type-is-xml", "assert.content-type-is-html", "assert.cookie-exists", "assert.cookie-value-equals", "assert.cookie-is-secured", "assert.cookie-is-not-secured", "assert.body-equals", "assert.body-contains-text", "assert.body-is-empty", "assert.body-is-not-empty", "assert.body-length-equals", "assert.body-starts-with", "assert.body-ends-with", "assert.body-matches-regex", "assert.body-json-is-json-array", "assert.body-json-is-json-object", "assert.body-json-path-exists", "log.error", "log.warn", "log.info", "log.debug", "log.log-info-response", "extractJson.string-from-list"],
+          "enum": ["assert.response-time-is-below", "assert.response-time-is-above", "assert.status-code-equals", "assert.status-code-is-success", "assert.status-code-is-client-error", "assert.status-code-is-server-error", "assert.header-exists", "assert.header-value-equals", "assert.content-type-is-json", "assert.content-type-is-xml", "assert.content-type-is-html", "assert.cookie-exists", "assert.cookie-value-equals", "assert.cookie-is-secured", "assert.cookie-is-not-secured", "assert.body-equals", "assert.body-contains-text", "assert.body-is-empty", "assert.body-is-not-empty", "assert.body-length-equals", "assert.body-starts-with", "assert.body-ends-with", "assert.body-matches-regex", "assert.body-json-is-json-array", "assert.body-json-is-json-object", "assert.body-json-path-exists", "log.error", "log.warn", "log.info", "log.debug", "log.log-info-response", "extractJson.string-from-list", "extractJson.string-from-json-path"],
           "description": "The method to be used for the response action."
         }
       },

testApi/src/main/resources/schema/suite.schema.json

@@ -130,7 +130,7 @@
       "properties": {
         "method": {
           "type": "string",
-          "enum": ["assert.response-time-is-below", "assert.response-time-is-above", "assert.status-code-equals", "assert.status-code-is-success", "assert.status-code-is-client-error", "assert.status-code-is-server-error", "assert.header-exists", "assert.header-value-equals", "assert.content-type-is-json", "assert.content-type-is-xml", "assert.content-type-is-html", "assert.cookie-exists", "assert.cookie-value-equals", "assert.cookie-is-secured", "assert.cookie-is-not-secured", "assert.body-equals", "assert.body-contains-text", "assert.body-is-empty", "assert.body-is-not-empty", "assert.body-length-equals", "assert.body-starts-with", "assert.body-ends-with", "assert.body-matches-regex", "assert.body-json-is-json-array", "assert.body-json-is-json-object", "assert.body-json-path-exists", "log.error", "log.warn", "log.info", "log.debug", "log.log-info-response", "extractJson.string-from-list"],
+          "enum": ["assert.response-time-is-below", "assert.response-time-is-above", "assert.status-code-equals", "assert.status-code-is-success", "assert.status-code-is-client-error", "assert.status-code-is-server-error", "assert.header-exists", "assert.header-value-equals", "assert.content-type-is-json", "assert.content-type-is-xml", "assert.content-type-is-html", "assert.cookie-exists", "assert.cookie-value-equals", "assert.cookie-is-secured", "assert.cookie-is-not-secured", "assert.body-equals", "assert.body-contains-text", "assert.body-is-empty", "assert.body-is-not-empty", "assert.body-length-equals", "assert.body-starts-with", "assert.body-ends-with", "assert.body-matches-regex", "assert.body-json-is-json-array", "assert.body-json-is-json-object", "assert.body-json-path-exists", "log.error", "log.warn", "log.info", "log.debug", "log.log-info-response", "extractJson.string-from-list", "extractJson.string-from-json-path"],
           "description": "The method to be used for the response action."
         }
       },

testApi/src/main/scala/africa/absa/testing/scapi/rest/response/action/AssertionResponseAction.scala

@@ -508,7 +508,7 @@ object AssertionResponseAction extends ResponseActions {
    */
   private def assertBodyContainsText(response: Response, text: String): Try[Unit] = Try {
     if (!response.body.contains(text)) {
-      val errMsg = s"Expected body to contain $text"
+      val errMsg = s"Expected body to contains: '$text'. Content of body: '${response.body}'"
       Logger.error(errMsg)
       throw AssertionException(errMsg)
     }

testApi/src/main/scala/africa/absa/testing/scapi/rest/response/action/ExtractJsonResponseAction.scala

@@ -23,6 +23,7 @@ import africa.absa.testing.scapi.rest.response.action.types.ExtractJsonResponseA
 import africa.absa.testing.scapi.utils.cache.RuntimeCache
 import africa.absa.testing.scapi.utils.validation.ContentValidator
 import africa.absa.testing.scapi.{AssertionException, UndefinedResponseActionTypeException}
+import com.jayway.jsonpath.{Configuration, JsonPath}
 import spray.json._
 
 import scala.util.Try
@@ -45,6 +46,7 @@ object ExtractJsonResponseAction extends ResponseActions {
     val action = fromString(responseAction.name.toLowerCase).getOrElse(None)
     action match {
       case StringFromList => validateStringFromList(responseAction)
+      case StringFromJsonPath => validateStringFromJsonPath(responseAction)
       case _ => throw UndefinedResponseActionTypeException(responseAction.name)
     }
   }
@@ -61,13 +63,21 @@ object ExtractJsonResponseAction extends ResponseActions {
 
     val action = fromString(responseAction.name.toLowerCase).getOrElse(None)
     action match {
-      case StringFromList =>
+      case StringFromList | StringFromJsonPath =>
         val cacheKey = responseAction.params("cacheKey")
-        val listIndex = responseAction.params("listIndex").toInt
-        val jsonKey = responseAction.params("jsonKey")
         val cacheLevel = responseAction.params("cacheLevel")
 
-        stringFromList(response, cacheKey, listIndex, jsonKey, cacheLevel)
+        action match {
+          case StringFromList =>
+            val jsonKey = responseAction.params("jsonKey")
+            val listIndex = responseAction.params("listIndex").toInt
+            stringFromList(response, cacheKey, listIndex, jsonKey, cacheLevel)
+
+          case StringFromJsonPath =>
+            val jsonPath = responseAction.params("jsonPath")
+            stringFromJsonPath(response, jsonPath, cacheKey, cacheLevel)
+        }
+
       case _ => throw UndefinedResponseActionTypeException(s"Unsupported assertion[group: extract]: ${responseAction.name}")
     }
   }
@@ -137,4 +147,45 @@ object ExtractJsonResponseAction extends ResponseActions {
     ContentValidator.validateIntegerString(listIndex, s"ExtractJson.$StringFromList.listIndex")
   }
 
+  /**
+   * This method validates the parameters of the StringFromJsonPath type of response action.
+   *
+   * @param assertion The ResponseAction instance containing the response action details.
+   */
+  private def validateStringFromJsonPath(assertion: ResponseAction): Unit = {
+    val cacheKey = assertion.params.getOrElse("cacheKey", throw new IllegalArgumentException(s"Missing required 'cacheKey' parameter for extract $StringFromJsonPath logic"))
+    val jsonPath = assertion.params.getOrElse("jsonPath", throw new IllegalArgumentException(s"Missing required 'jsonPath' parameter for extract $StringFromJsonPath logic"))
+    val cacheLevel = assertion.params.getOrElse("cacheLevel", throw new IllegalArgumentException(s"Missing required 'cacheLevel' parameter for extract $StringFromJsonPath logic"))
+
+    ContentValidator.validateNonEmptyString(jsonPath, s"ExtractJson.$StringFromJsonPath.jsonPath")
+    ContentValidator.validateNonEmptyString(cacheKey, s"ExtractJson.$StringFromJsonPath.cacheKey")
+    ContentValidator.validateNonEmptyString(cacheLevel, s"ExtractJson.$StringFromJsonPath.cacheLevel")
+  }
+
+  /**
+   * This method extracts a string from a JSON array response at a given json path
+   * and stores it in a runtime cache with a given key and expiration level.
+   *
+   * @param response          The Response instance containing the JSON body.
+   * @param jsonPath          The json path in the JSON from which to extract the string.
+   * @param cacheKey          The key to use when storing the extracted string in the runtime cache.
+   * @param runtimeCacheLevel The expiration level to use when storing the extracted string in the runtime cache.
+   * @return A Try[Unit] indicating whether the string extraction and caching operation was successful or not.
+   */
+  private def stringFromJsonPath(response: Response, jsonPath: String, cacheKey: String, runtimeCacheLevel: String): Try[Unit] = Try {
+    val configuration = Configuration.defaultConfiguration().addOptions(com.jayway.jsonpath.Option.SUPPRESS_EXCEPTIONS)
+    val json = JsonPath.using(configuration).parse(response.body)
+    val extractedValueOpt = Option(json.read[Any](jsonPath))
+
+    extractedValueOpt match {
+      case Some(extractedValue) =>
+        RuntimeCache.put(key = cacheKey, value = extractedValue.toString, RuntimeCache.determineLevel(runtimeCacheLevel))
+        Logger.debug(s"Extracted string '${extractedValue.toString}' from json path '$jsonPath' and stored it in runtime cache with key '$cacheKey' and expiration level '$runtimeCacheLevel'.")
+
+      case None =>
+        val errMsg = s"Expected JSON path '$jsonPath' does not exist in the response body"
+        Logger.error(errMsg)
+        throw AssertionException(errMsg)
+    }
+  }
 }

testApi/src/main/scala/africa/absa/testing/scapi/rest/response/action/types/ExtractJsonResponseActionType.scala

@@ -23,6 +23,7 @@ object ExtractJsonResponseActionType extends Enumeration {
   type ExtractJsonResponseActionType = Value
 
   val StringFromList: ExtractJsonResponseActionType.Value = Value("string-from-list")
+  val StringFromJsonPath: ExtractJsonResponseActionType.Value = Value("string-from-json-path")
 
   def fromString(s: String): Option[ExtractJsonResponseActionType] = Try(this.withName(s)).toOption
 }