Add options test suite

examples/options.feature

@@ -0,0 +1,43 @@
+Feature: Options
+  Scenario: Check a live link in verbose mode
+    Given a file named "foo.md" with:
+    """
+    [Google](https://google.com)
+    """
+    When I successfully run `liche -v foo.md`
+    Then the stderr should contain "OK"
+
+  Scenario: Check a live link in verbose mode with a long option
+    Given a file named "foo.md" with:
+    """
+    [Google](https://google.com)
+    """
+    When I successfully run `liche --verbose foo.md`
+    Then the stderr should contain "OK"
+
+  Scenario: Check live and dead links in verbose mode
+    Given a file named "foo.md" with:
+    """
+    [Google](https://google.com)
+    [The answer](https://some-say-the-answer-is-42.com)
+    """
+    When I run `liche -v foo.md`
+    Then the exit status should be 1
+    And the stderr should contain "OK"
+    And the stderr should contain "ERROR"
+
+  Scenario: Check a live link with timeout
+    Given a file named "foo.md" with:
+    """
+    [Google](https://google.com)
+    """
+    When I successfully run `liche --timeout 10 foo.md`
+    Then the stdout should contain exactly ""
+
+  Scenario: Set concurrency
+    Given a file named "foo.md" with:
+    """
+    [Google](https://google.com)
+    """
+    When I successfully run `liche --concurrency 10 foo.md`
+    Then the stdout should contain exactly ""