Cannot read property 'map' of undefined

[ryanluker]

Bug:

If you do not have a coverage file you can get this error as the pickFile does not account for length 0 in its logic.

Info:

 public async pickFile(filePaths: string[], placeHolder: string): Promise<string | undefined> {
        let pickedFile: string;
        if (filePaths.length === 1) {
            pickedFile = filePaths[0];
        } else {
            const fileQuickPicks = filePaths.map((filePath) => {
                return {
                    description: filePath,
                    label: basename(filePath),
                };
            });