add availability for "exit-wizard"

Author: C-Otto

wizard-cli/src/main/java/de/cotto/bitbook/wizard/cli/WizardCommands.java

@@ -28,6 +28,13 @@ public void exitWizard() {
         promptChangeListener.changePromptToDefault();
     }
 
+    public Availability wizardAvailability() {
+        if (wizardService.isEnabled()) {
+            return Availability.unavailable("wizard is active");
+        }
+        return Availability.available();
+    }
+
     public Availability exitWizardAvailability() {
         if (wizardService.isEnabled()) {
             return Availability.available();

wizard-cli/src/test/java/de/cotto/bitbook/wizard/cli/WizardCommandsTest.java

@@ -37,6 +37,11 @@ void exit_wizard_command_initially_not_available() {
             assertThat(wizardCommands.exitWizardAvailability().isAvailable()).isEqualTo(false);
             assertThat(wizardCommands.exitWizardAvailability().getReason()).isEqualTo("wizard is not active");
         }
+
+        @Test
+        void wizard_command_initially_available() {
+            assertThat(wizardCommands.wizardAvailability().isAvailable()).isEqualTo(true);
+        }
     }
 
     @Nested
@@ -64,5 +69,12 @@ void exit_wizard_notifies_service() {
             wizardCommands.exitWizard();
             verify(wizardService).disableWizard();
         }
+
+        @Test
+        void start_wizard_command_not_available() {
+            when(wizardService.isEnabled()).thenReturn(true);
+            assertThat(wizardCommands.wizardAvailability().isAvailable()).isEqualTo(false);
+            assertThat(wizardCommands.wizardAvailability().getReason()).isEqualTo("wizard is active");
+        }
     }
 }