test: add test for HomeController

src/test/kotlin/dev/pcvolkmer/oncoanalytics/monitor/web/HomeControllerTest.kt

@@ -0,0 +1,41 @@
+package dev.pcvolkmer.oncoanalytics.monitor.web
+
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.jupiter.api.BeforeEach
+import org.junit.jupiter.api.Test
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.autoconfigure.web.reactive.WebFluxTest
+import org.springframework.http.MediaType
+import org.springframework.test.web.reactive.server.WebTestClient
+
+@WebFluxTest(controllers = [HomeController::class])
+class HomeControllerTest {
+
+    private lateinit var webClient: WebTestClient
+
+    @BeforeEach
+    fun setup(
+        @Autowired webClient: WebTestClient,
+    ) {
+        this.webClient = webClient
+    }
+
+    @Test
+    fun shouldGetStartPage() {
+        webClient
+            .get().uri("/")
+            .exchange()
+            .expectAll(
+                { spec -> spec.expectStatus().isOk },
+                { spec -> spec.expectHeader().contentType(MediaType.TEXT_HTML) },
+                { spec ->
+                    spec.expectBody()
+                        .consumeWith {
+                            assertThat(it.responseBody).isNotNull()
+                            assertThat(String(it.responseBody!!)).contains("<h1>onco-analytics-monitor</h1>")
+                        }
+                }
+            )
+    }
+
+}