test: add test for showing help on no options

Author: kingdaro

test/binCases/help/help-output-no-command/stdin.js

@@ -0,0 +1,16 @@
+"use strict";
+
+module.exports = function testAssertions(code, stdout, stderr) {
+	expect(code).toBe(2);
+	expect(stdout).toEqual(expect.anything());
+	expect(stdout).toContain("Config options:");
+	expect(stdout).toContain("Basic options:");
+	expect(stdout).toContain("Module options:");
+	expect(stdout).toContain("Output options:");
+	expect(stdout).toContain("Advanced options:");
+	expect(stdout).toContain("Resolving options:");
+	expect(stdout).toContain("Optimizing options:");
+	expect(stdout).toContain("Stats options:");
+	expect(stdout).toContain("Options:");
+	expect(stderr).toHaveLength(0);
+};