Move docs directory validation to after copying README.md

Signed-off-by: Ruslans Tarasovs <ruslan@tarasovs.com>

packages/techdocs-cli/cli-e2e-tests/techdocs-cli.test.ts

@@ -60,6 +60,7 @@ jest.setTimeout(timeout * 2);
 
 describe('end-to-end', () => {
   const cwd = path.resolve(__dirname, '../src/example-docs');
+  const legacyCwd = path.resolve(__dirname, '../src/legacy-docs');
   const entryPoint = path.resolve(__dirname, '../bin/techdocs-cli');
 
   afterEach(async () => {
@@ -106,6 +107,19 @@ describe('end-to-end', () => {
     expect(proc.exit).toEqual(0);
   });
 
+  it('can generate with --legacyCopyReadmeMdToIndexMd option', async () => {
+    const proc = await executeCommand(
+      entryPoint,
+      ['generate', '--no-docker', '--legacyCopyReadmeMdToIndexMd'],
+      {
+        legacyCwd,
+        timeout,
+      },
+    );
+    expect(proc.stdout).toContain('Successfully generated docs');
+    expect(proc.exit).toEqual(0);
+  });
+
   it('can serve in mkdocs', async () => {
     const proc = await executeCommand(
       entryPoint,