diff --git a/rsconcept/frontend/src/models/libraryAPI.test.ts b/rsconcept/frontend/src/models/libraryAPI.test.ts
new file mode 100644
index 00000000..ebcd1545
--- /dev/null
+++ b/rsconcept/frontend/src/models/libraryAPI.test.ts
@@ -0,0 +1,48 @@
+import { ILibraryItem, LibraryItemType } from './library';
+import { matchLibraryItem } from './libraryAPI';
+
+
+describe('Testing matching LibraryItem', () => {
+  const item1: ILibraryItem = {
+    id: 42,
+    item_type: LibraryItemType.RSFORM,
+    title: 'Item1',
+    alias: 'I1',
+    comment: 'comment',
+    is_common: true,
+    is_canonical: true,
+    time_create: 'I2',
+    time_update: '',
+    owner: null
+  };
+
+  const itemEmpty: ILibraryItem = {
+    id: -1,
+    item_type: LibraryItemType.RSFORM,
+    title: '',
+    alias: '',
+    comment: '',
+    is_common: true,
+    is_canonical: true,
+    time_create: '',
+    time_update: '',
+    owner: null
+  };
+
+  test('empty input',
+  () => {
+    expect(matchLibraryItem(itemEmpty, '')).toEqual(true);
+    expect(matchLibraryItem(itemEmpty, '12')).toEqual(false);
+    expect(matchLibraryItem(itemEmpty, ' ')).toEqual(false);
+  });
+
+  test('regular input',
+  () => {
+    expect(matchLibraryItem(item1, item1.title)).toEqual(true);
+    expect(matchLibraryItem(item1, item1.alias)).toEqual(true);
+    expect(matchLibraryItem(item1, item1.title + '@invalid')).toEqual(false);
+    expect(matchLibraryItem(item1, item1.alias + '@invalid')).toEqual(false);
+    expect(matchLibraryItem(item1, item1.time_create)).toEqual(false);
+    expect(matchLibraryItem(item1, item1.comment)).toEqual(false);
+  });
+});