DEVX-813: adding tests for InventoryUtil

Author: ShipilA

commercetools/commercetools-importapi-utils/src/test/java/com/commercetools/sdk/InventoryUtilTest.java

@@ -0,0 +1,38 @@
+package com.commercetools.sdk;
+
+import com.commercetools.api.models.inventory.InventoryEntry;
+import io.vrap.rmf.base.client.utils.json.JsonUtils;
+import org.junit.jupiter.api.Test;
+
+import static com.commercetools.sdk.TestUtils.stringFromResource;
+import static org.junit.jupiter.api.Assertions.*;
+
+public class InventoryUtilTest {
+    private final InventoryUtil util = new InventoryUtil();
+
+    @Test
+    void shouldMapRequiredFields() {
+        var entry = JsonUtils.fromJsonString(stringFromResource("src/test/resources/inventory.example.json"), InventoryEntry.class);
+        var result = util.toInventoryImport(entry);
+
+        assertEquals("inventory-key", result.getKey());
+        assertEquals("sku-001", result.getSku());
+        assertEquals(100L, result.getQuantityOnStock());
+    }
+
+    @Test
+    void shouldMapSupplyChannelKeyFromExpandedObj() {
+        var entry = JsonUtils.fromJsonString(stringFromResource("src/test/resources/inventory.example.json"), InventoryEntry.class);
+        var result = util.toInventoryImport(entry);
+
+        assertNotNull(result.getSupplyChannel());
+        assertEquals("channel-key", result.getSupplyChannel().getKey());  // catches getId() bug
+    }
+
+    @Test
+    void shouldHandleNullSupplyChannel() {
+        var entry = JsonUtils.fromJsonString(stringFromResource("src/test/resources/inventory.no-channel.json"), InventoryEntry.class);
+        var result = util.toInventoryImport(entry);
+        assertNull(result.getSupplyChannel());
+    }
+}