feature: #6: Add cucumber test for article routes

test/feature/Context.kt

@@ -0,0 +1,40 @@
+package feature
+
+import cucumber.api.Scenario
+import fr.dcproject.module
+import io.ktor.application.Application
+import io.ktor.server.testing.TestApplicationCall
+import io.ktor.server.testing.TestApplicationEngine
+import io.ktor.server.testing.TestApplicationRequest
+
+class Context(
+    val engine: TestApplicationEngine,
+    val scenario: Scenario
+) {
+    companion object {
+        lateinit var current: Context
+    }
+
+    init {
+        engine.start()
+        val moduleFunction: Application.() -> Unit = { module() }
+        val test: TestApplicationEngine.() -> Unit = {
+            moduleFunction(application)
+        }
+        engine.test()
+    }
+
+    var call: TestApplicationCall? = null
+
+    private val requestContextConfigurations: MutableList<TestApplicationRequest.() -> Unit> = mutableListOf()
+    fun setupRequest(testApplicationRequest: TestApplicationRequest) {
+        requestContextConfigurations.forEach {
+            it(testApplicationRequest)
+        }
+    }
+    fun setupNextRequests(requestContextConfiguration: TestApplicationRequest.() -> Unit) = requestContextConfigurations.add(requestContextConfiguration)
+}
+
+fun TestApplicationRequest.applyConfigurations() {
+    Context.current.setupRequest(this)
+}

test/feature/Request.kt

@@ -0,0 +1,92 @@
+package feature
+
+import com.google.gson.Gson
+import cucumber.api.Scenario
+import cucumber.api.java8.En
+import io.cucumber.datatable.DataTable
+import io.ktor.http.ContentType
+import io.ktor.http.HttpHeaders
+import io.ktor.http.HttpMethod
+import io.ktor.http.HttpStatusCode
+import io.ktor.server.testing.TestApplicationCall
+import io.ktor.server.testing.TestApplicationEngine
+import io.ktor.server.testing.setBody
+import org.junit.jupiter.api.Assertions.assertEquals
+import org.koin.test.KoinTest
+import org.opentest4j.AssertionFailedError
+import kotlin.test.asserter
+import feature.Context.Companion.current as currentContext
+
+class Request: En, KoinTest {
+    init {
+        Before { scenario: Scenario ->
+        }
+
+        After { scenario: Scenario ->
+        }
+
+        When("I send a {string} request to {string} with body:") { method: String, uri: String, body: String ->
+            val test: TestApplicationEngine.() -> Unit = {
+                currentContext.call = handleRequest {
+                    applyConfigurations()
+                    addHeader(HttpHeaders.ContentType, ContentType.Application.Json.toString())
+                    this.method = HttpMethod.parse(method)
+                    this.uri = uri
+                    setBody(body)
+                }
+            }
+
+            currentContext.engine.test()
+        }
+
+        When("I send a {string} request to {string}") { method: String, uri: String ->
+            val test: TestApplicationEngine.() -> Unit = {
+                currentContext.call = handleRequest {
+                    applyConfigurations()
+                    addHeader(HttpHeaders.ContentType, ContentType.Application.Json.toString())
+                    this.method = HttpMethod.parse(method.toUpperCase())
+                    this.uri = uri
+                }
+            }
+
+            currentContext.engine.test()
+        }
+
+        Then("the response status code should be {int}") { statusCode: Int ->
+            val call: TestApplicationCall = currentContext.call ?: throw AssertionFailedError("No call", statusCode, null)
+            with(call) {
+                assertEquals(HttpStatusCode.fromValue(statusCode), response.status())
+            }
+        }
+
+        And("the response should contain:") { expected: DataTable ->
+            val call: TestApplicationCall = currentContext.call ?: throw AssertionFailedError("No call")
+            val p = call.response
+            val response = Gson().fromJson<List<Map<String, String>>>(p.content, List::class.java)
+
+            expected.asMap<String, String>(String::class.java, String::class.java).forEach { (key, value) ->
+                response.forEach {
+                    if (it.containsKey(key)) {
+                        assertEquals(it[key], value)
+                        return@And
+                }
+                }
+                asserter.fail("The response not contain $key field")
+            }
+        }
+
+        And("the response should contain object:") { expected: DataTable ->
+            val call: TestApplicationCall = currentContext.call ?: throw AssertionFailedError("No call")
+            val p = call.response
+            val response = Gson().fromJson<Map<String, String>>(p.content, Map::class.java)
+
+            expected.asMap<String, String>(String::class.java, String::class.java).forEach { (key, value) ->
+                if (response.containsKey(key)) {
+                    assertEquals(value, response[key])
+                    return@And
+                }
+                asserter.fail("The response not contain $key field")
+            }
+        }
+    }
+}