Assert commandOutput to be non-empty after a command is run

build.gradle

@@ -58,4 +58,5 @@ checkstyle {
 
 run{
     standardInput = System.in
+    enableAssertions = true
 }

src/data/tasks.txt

@@ -8,3 +8,9 @@ T;;eruiear;;false
 T;;awosdu;;false
 T;;hkadsd;;false
 T;;sadoi;;false
+T;;128390;;false
+T;;12389;;false
+T;;1238904;;false
+T;;123784;;false
+T;;1234;;false
+T;;1234;;false

src/main/java/Duke.java

@@ -34,6 +34,7 @@ public void setTaskList() {
             Ui.print(new String[]{"Something went wrong in loading the task file and parsing",
                     e.getMessage()});
         }
+        // todo ensure a tasklist is always created?
     }
 
 
@@ -127,7 +128,7 @@ String getResponse(String input) {
             }
         }
 
-        c.debug();
+        // c.debug();
         return "Duke heard: " + c.getCommandOutputMsg();
     }
 }

src/main/java/commands/ByeCommand.java

@@ -20,5 +20,7 @@ public void run(TaskList taskList) {
         } else {
             handleTooManyArgs(); // should this be in try-catch block
         }
+
+        assert !this.commandOutputMsg.isEmpty() : "empty command output in " + this.commandName;
     }
 }

src/main/java/commands/DeadlineCommand.java

@@ -20,5 +20,7 @@ public void run(TaskList taskList) {
         } catch (Exception e) {
             handleException(e);
         }
+
+        assert !this.commandOutputMsg.isEmpty() : "empty command output in " + this.commandName;
     }
 }

src/main/java/commands/DeleteCommand.java

@@ -16,6 +16,6 @@ public void run(TaskList taskList) {
             handleException(e);
         }
 
-        assert !this.commandOutputMsg.isEmpty();
+        assert !this.commandOutputMsg.isEmpty() : "empty command output in " + this.commandName;
     }
 }

src/main/java/commands/DoneCommand.java

@@ -16,6 +16,6 @@ public void run(TaskList taskList) {
             handleException(e);
         }
 
-        assert !this.commandOutputMsg.isEmpty();
+        assert !this.commandOutputMsg.isEmpty() : "empty command output in " + this.commandName;
     }
 }

src/main/java/commands/EventCommand.java

@@ -23,6 +23,6 @@ public void run(TaskList taskList) {
             handleException(e);
         }
 
-        assert !this.commandOutputMsg.isEmpty();
+        assert !this.commandOutputMsg.isEmpty() : "empty command output in " + this.commandName;
     }
 }

src/main/java/commands/ListCommand.java

@@ -15,6 +15,6 @@ public void run(TaskList taskList) {
         } else {
             handleTooManyArgs();
         }
-        assert this.commandOutputMsg != null;
+        assert !this.commandOutputMsg.isEmpty() : "empty command output in " + this.commandName;
     }
 }

src/main/java/commands/TodoCommand.java

@@ -22,5 +22,9 @@ public void run(TaskList taskList) {
         } catch (MissingArgumentException e) {
             handleException(e);
         }
+
+        System.out.println(this.commandOutputMsg);
+        System.out.println(this.commandOutputMsg.isEmpty());
+        assert !this.commandOutputMsg.isEmpty() : "empty command output in " + this.commandName;
     }
 }