Improve test coverage for select.tsx

src/test/components/__snapshots__/select.spec.tsx.snap

@@ -1,3 +1,13 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
+exports[`select.tsx Tests \`current\`-value 1`] = `[Function]`;
+
+exports[`select.tsx Tests \`current\`-value with testId 1`] = `[Function]`;
+
+exports[`select.tsx Tests \`current\`-value without testId 1`] = `[Function]`;
+
+exports[`select.tsx Tests Select rendering 1`] = `[Function]`;
+
+exports[`select.tsx Tests rendering of multiple Select elements 1`] = `[Function]`;
+
 exports[`select.tsx Tests select rendering 1`] = `[Function]`;

src/test/components/select.spec.tsx

@@ -14,7 +14,7 @@ const items: Array<IItemProps> = [
 ];
 
 describe("select.tsx", () => {
-  it("Tests select rendering", () => {
+  it("Tests Select rendering", () => {
     const { asFragment } = render(
       <Select items={items} onChange={(item) => onChange(item)}></Select>,
     );
@@ -22,7 +22,26 @@ describe("select.tsx", () => {
     expect(asFragment).toMatchSnapshot();
   });
 
-  it("Tests select onChange", () => {
+  it("Tests rendering of multiple Select elements", () => {
+    const { asFragment } = render(
+      <>
+        <Select
+          testId="1"
+          items={items}
+          onChange={(item) => onChange(item)}
+        ></Select>
+        <Select
+          testId="2"
+          items={items}
+          onChange={(item) => onChange(item)}
+        ></Select>
+      </>,
+    );
+
+    expect(asFragment).toMatchSnapshot();
+  });
+
+  it("Tests Select onChange", () => {
     const select = render(
       <Select items={items} onChange={(item) => onChange(item)}></Select>,
     );
@@ -31,7 +50,7 @@ describe("select.tsx", () => {
     expect(onChange).toBeCalledWith(items[1]);
   });
 
-  it("Tests select onChange with undefined item", () => {
+  it("Tests Select onChange with undefined item", () => {
     const select = render(
       <Select items={items} onChange={(item) => onChange(item)}></Select>,
     );
@@ -39,4 +58,29 @@ describe("select.tsx", () => {
     fireEvent.change(select.getByTestId("select"), { target: { value: 5 } });
     expect(onChange).toBeCalledWith(undefined);
   });
+
+  it("Tests `current`-value without testId", () => {
+    const { asFragment } = render(
+      <Select
+        current={items[1].label}
+        items={items}
+        onChange={(item) => onChange(item)}
+      ></Select>,
+    );
+
+    expect(asFragment).toMatchSnapshot();
+  });
+
+  it("Tests `current`-value with testId", () => {
+    const { asFragment } = render(
+      <Select
+        current={items[1].label}
+        testId="1"
+        items={items}
+        onChange={(item) => onChange(item)}
+      ></Select>,
+    );
+
+    expect(asFragment).toMatchSnapshot();
+  });
 });