Assert output content in basic tests

pkg/omf/spec/basic_spec.fish

@@ -5,18 +5,43 @@ function describe_basic_tests
 
   function it_has_a_help_command
     set -l output (omf help)
+    echo $output | grep -Eq "cd.+Change to root or package directory"
+    echo $output | grep -Eq "channel.+Get or change the update channel"
+    echo $output | grep -Eq "describe.+Show information about a package"
+    echo $output | grep -Eq "destroy.+Uninstall Oh My Fish"
+    echo $output | grep -Eq "doctor.+Troubleshoot Oh My Fish"
+    echo $output | grep -Eq "help.+Shows help about a command"
+    echo $output | grep -Eq "install.+Install one or more packages"
+    echo $output | grep -Eq "list.+List installed packages"
+    echo $output | grep -Eq "new.+Create a new package from a template"
+    echo $output | grep -Eq "reload.+Reload the current shell"
+    echo $output | grep -Eq "remove.+Remove a package"
+    echo $output | grep -Eq "repositories.+Manage package repositories"
+    echo $output | grep -Eq "search.+Search for a package or theme"
+    echo $output | grep -Eq "theme.+Install and list themes"
+    echo $output | grep -Eq "update.+Update Oh My Fish"
+    echo $output | grep -Eq "version.+Display version and exit"
     assert 0 = $status
   end
 
   function it_has_a_doctor_command
     set -l output (omf doctor)
     assert 0 = $status
+    assert -n (echo $output | grep "Oh My Fish version")
+    assert -n (echo $output | grep "Checking for a sane environment...")
   end
 
-  function it_install_packages
-    set -l remove_output  (omf remove apt 2> /dev/null)
+  function it_installs_packages
+    set -l remove_output (omf remove apt 2> /dev/null)
     set -l install_output (omf install apt)
+    assert 0 = $status
+    assert -n (echo $install_output | grep "apt successfully installed.")
+  end
 
+  function it_removes_packages
+    set -l install_output (omf install apt 2> /dev/null)
+    set -l remove_output (omf remove apt)
     assert 0 = $status
+    assert -n (echo $remove_output | grep -q "apt successfully removed.")
   end
 end