diff --git a/modules/item/back/methods/fixed-price/specs/filter.spec.js b/modules/item/back/methods/fixed-price/specs/filter.spec.js
new file mode 100644
index 000000000..ff259357f
--- /dev/null
+++ b/modules/item/back/methods/fixed-price/specs/filter.spec.js
@@ -0,0 +1,86 @@
+const app = require('vn-loopback/server/server');
+
+describe('fixed price filter()', () => {
+    it('should return 1 result filtering by item ID', async() => {
+        const itemID = 3;
+        const ctx = {
+            req: {accessToken: {userId: 1}},
+            args: {
+                search: itemID
+            }
+        };
+        const result = await app.models.FixedPrice.filter(ctx);
+
+        expect(result.length).toEqual(1);
+        expect(result[0].id).toEqual(2);
+        expect(result[0].itemFk).toEqual(itemID);
+    });
+
+    it('should return 1 result filtering by item type code', async() => {
+        const itemCode = 'CRI';
+        const ctx = {
+            req: {accessToken: {userId: 1}},
+            args: {
+                search: itemCode
+            }
+        };
+        const itemType = await app.models.ItemType.findOne({
+            where: {code: itemCode},
+            fields: ['id']
+        });
+        const items = await app.models.Item.find({
+            where: {typeFk: itemType.id},
+            fields: ['id']
+        });
+        const IDs = items.map(item => {
+            return item.id;
+        });
+
+        const result = await app.models.FixedPrice.filter(ctx);
+        const firstResult = result[0];
+
+        expect(result.length).toEqual(1);
+        expect(firstResult.id).toEqual(2);
+        expect(IDs).toContain(firstResult.itemFk);
+    });
+
+    it('should return 2 results filtering by warehouse', async() => {
+        const warehouseID = 1;
+        const ctx = {
+            req: {accessToken: {userId: 1}},
+            args: {
+                warehouseFk: warehouseID
+            }
+        };
+        const result = await app.models.FixedPrice.filter(ctx);
+        const length = result.length;
+        const anyResult = result[Math.floor(Math.random() * Math.floor(length))];
+
+        expect(result.length).toEqual(2);
+        expect(anyResult.warehouseFk).toEqual(warehouseID);
+    });
+
+    it('should return no results filtering by hasMinPrice', async() => {
+        const ctx = {
+            req: {accessToken: {userId: 1}},
+            args: {
+                hasMinPrice: true
+            }
+        };
+        const result = await app.models.FixedPrice.filter(ctx);
+
+        expect(result.length).toEqual(0);
+    });
+
+    it('should return no results filtering by typeFk', async() => {
+        const ctx = {
+            req: {accessToken: {userId: 1}},
+            args: {
+                typeFk: 1
+            }
+        };
+        const result = await app.models.FixedPrice.filter(ctx);
+
+        expect(result.length).toEqual(1);
+    });
+});