diff --git a/src/test/kotlin/no/nb/mlt/wls/product/controller/ProductControllerTest.kt b/src/test/kotlin/no/nb/mlt/wls/product/controller/ProductControllerTest.kt
index 4e8d7b12..f9ebae9e 100644
--- a/src/test/kotlin/no/nb/mlt/wls/product/controller/ProductControllerTest.kt
+++ b/src/test/kotlin/no/nb/mlt/wls/product/controller/ProductControllerTest.kt
@@ -1,5 +1,7 @@
 package no.nb.mlt.wls.product.controller
 
+import com.ninjasquad.springmockk.MockkBean
+import io.mockk.every
 import io.mockk.junit5.MockKExtension
 import no.nb.mlt.wls.EnableTestcontainers
 import no.nb.mlt.wls.core.data.Environment.NONE
@@ -22,11 +24,16 @@ import org.springframework.boot.test.autoconfigure.web.reactive.AutoConfigureWeb
 import org.springframework.boot.test.context.SpringBootTest
 import org.springframework.boot.test.context.SpringBootTest.WebEnvironment.RANDOM_PORT
 import org.springframework.data.mongodb.repository.config.EnableMongoRepositories
+import org.springframework.http.HttpStatus
 import org.springframework.http.MediaType
+import org.springframework.http.ResponseEntity
 import org.springframework.security.test.context.support.WithMockUser
 import org.springframework.security.test.web.reactive.server.SecurityMockServerConfigurers.csrf
 import org.springframework.test.web.reactive.server.WebTestClient
 import org.springframework.test.web.reactive.server.expectBody
+import org.springframework.web.client.HttpClientErrorException
+import org.springframework.web.server.ServerErrorException
+import java.net.URI
 
 @EnableTestcontainers
 @TestInstance(PER_CLASS)
@@ -35,9 +42,11 @@ import org.springframework.test.web.reactive.server.expectBody
 @EnableMongoRepositories("no.nb.mlt.wls")
 @SpringBootTest(webEnvironment = RANDOM_PORT)
 class ProductControllerTest(
-    @Autowired val repository: ProductRepository,
-    @Autowired val synqProductService: SynqProductService
+    @Autowired val repository: ProductRepository
 ) {
+    @MockkBean
+    private lateinit var synqProductService: SynqProductService
+
     private lateinit var webTestClient: WebTestClient
 
     @BeforeEach
@@ -55,6 +64,10 @@ class ProductControllerTest(
     @Test
     @WithMockUser
     fun `createProduct with valid payload creates product`() {
+        every {
+            synqProductService.createProduct(any())
+        } returns ResponseEntity.created(URI.create("")).build()
+
         webTestClient
             .mutateWith(csrf())
             .post()
@@ -111,6 +124,10 @@ class ProductControllerTest(
     @Test
     @WithMockUser
     fun `createProduct where SynQ says it's a duplicate returns OK`() {
+        every {
+            synqProductService.createProduct(any())
+        } returns ResponseEntity.ok().build()
+
         webTestClient
             .mutateWith(csrf())
             .post()
@@ -124,6 +141,16 @@ class ProductControllerTest(
     @Test
     @WithMockUser
     fun `createProduct handles SynQ error`() {
+        every {
+            synqProductService.createProduct(any())
+        }.throws(
+            ServerErrorException(
+                "Failed to create product in SynQ, the storage system responded with " +
+                    "error code: '1002' and error text: 'Unknown product category TEST.'",
+                HttpClientErrorException(HttpStatus.NOT_FOUND, "Not found")
+            )
+        )
+
         webTestClient
             .mutateWith(csrf())
             .post()