Add tests

extensions/ql-vscode/src/view/variant-analysis/VariantAnalysisStatusStats.tsx

@@ -4,7 +4,7 @@ import { VSCodeLink } from "@vscode/webview-ui-toolkit/react";
 import { formatDate } from "../../pure/date";
 import { VariantAnalysisStatus } from "../../remote-queries/shared/variant-analysis";
 
-type Props = {
+export type VariantAnalysisStatusStatsProps = {
   variantAnalysisStatus: VariantAnalysisStatus;
   completedAt?: Date;
 
@@ -26,7 +26,7 @@ export const VariantAnalysisStatusStats = ({
   variantAnalysisStatus,
   completedAt,
   onViewLogsClick,
-}: Props) => {
+}: VariantAnalysisStatusStatsProps) => {
   if (variantAnalysisStatus === VariantAnalysisStatus.InProgress) {
     return <Icon className="codicon codicon-loading codicon-modifier-spin" />;
   }

extensions/ql-vscode/src/view/variant-analysis/__tests__/VariantAnalysisStatusStats.spec.tsx

@@ -0,0 +1,74 @@
+import * as React from "react";
+import { render as reactRender, screen } from "@testing-library/react";
+import { VariantAnalysisStatus } from "../../../remote-queries/shared/variant-analysis";
+import {
+  VariantAnalysisStatusStats,
+  VariantAnalysisStatusStatsProps,
+} from "../VariantAnalysisStatusStats";
+import { formatDate } from "../../../pure/date";
+
+describe(VariantAnalysisStatusStats.name, () => {
+  const onViewLogsClick = jest.fn();
+
+  afterEach(() => {
+    onViewLogsClick.mockReset();
+  });
+
+  const render = (props: Partial<VariantAnalysisStatusStatsProps> = {}) =>
+    reactRender(
+      <VariantAnalysisStatusStats
+        variantAnalysisStatus={VariantAnalysisStatus.InProgress}
+        {...props}
+      />,
+    );
+
+  it("renders an in-progress status correctly", () => {
+    const { container } = render({
+      variantAnalysisStatus: VariantAnalysisStatus.InProgress,
+    });
+
+    expect(
+      container.getElementsByClassName(
+        "codicon codicon-loading codicon-modifier-spin",
+      ).length,
+    ).toEqual(1);
+  });
+
+  it("renders when there is a completedAt date", () => {
+    const completedAt = new Date();
+    render({
+      variantAnalysisStatus: VariantAnalysisStatus.Succeeded,
+      completedAt,
+    });
+
+    expect(screen.getByText(formatDate(completedAt))).toBeInTheDocument();
+    expect(screen.queryByText("-")).not.toBeInTheDocument();
+  });
+
+  it("renders when there isn't a completedAt date", () => {
+    render({
+      variantAnalysisStatus: VariantAnalysisStatus.Succeeded,
+      completedAt: undefined,
+    });
+
+    expect(screen.getByText("-")).toBeInTheDocument();
+  });
+
+  it("renders when there is a viewLogs links", () => {
+    render({
+      variantAnalysisStatus: VariantAnalysisStatus.Succeeded,
+      onViewLogsClick: () => undefined,
+    });
+
+    expect(screen.getByText("View logs")).toBeInTheDocument();
+  });
+
+  it("renders when there isn't a viewLogs links", () => {
+    render({
+      variantAnalysisStatus: VariantAnalysisStatus.Succeeded,
+      onViewLogsClick: undefined,
+    });
+
+    expect(screen.queryByText("View logs")).not.toBeInTheDocument();
+  });
+});