Make task news nag configurable and deterministic (#3567)

This patch fixes #3497.

doc/man/taskrc.5.in

@@ -303,6 +303,7 @@ control specific occasions when output is generated. This list may contain:
     label      Column labels on tabular reports
     new-id     Provides feedback on any new task with IDs (and UUIDs for new tasks with ID 0, such as new completed tasks).
     new-uuid   Provides feedback on any new task with UUIDs. Overrides new-id. Useful for automation.
+    news       Reminds to read new release highlights until the user runs "task news".
     affected   Reports 'N tasks affected' and similar
     edit       Used the verbose template for the 'edit' command
     special    Feedback when applying special tags
@@ -327,7 +328,7 @@ Here are the shortcut equivalents:
 
 .nf
     verbose=on
-    verbose=blank,header,footnote,label,new-id,affected,edit,special,project,sync,filter,override,recur
+    verbose=blank,header,footnote,label,new-id,news,affected,edit,special,project,sync,filter,override,recur
 .fi
 
 .nf

src/Context.cpp

@@ -93,8 +93,8 @@ std::string configurationDefaults =
   "\n"
   "# Miscellaneous\n"
   "# verbose=                                     # Comma-separated list.  May contain any subset of:\n"
-  "# affected,blank,context,default,edit,filter,footnote,header,label,new-id,new-uuid,override,project,recur,special,sync\n"
-  "verbose=affected,blank,context,edit,header,footnote,label,new-id,project,special,sync,override,recur\n"
+  "# affected,blank,context,default,edit,filter,footnote,header,label,new-id,new-uuid,news,override,project,recur,special,sync\n"
+  "verbose=affected,blank,context,edit,header,footnote,label,new-id,news,project,special,sync,override,recur\n"
   "confirmation=1                                 # Confirmation on delete, big changes\n"
   "recurrence=1                                   # Enable recurrence\n"
   "recurrence.confirmation=prompt                 # Confirmation for propagating changes among recurring tasks (yes/no/prompt)\n"
@@ -1050,6 +1050,7 @@ bool Context::verbose (const std::string& token)
           v != "label"    &&  //
           v != "new-id"   &&  //
           v != "new-uuid" &&  //
+          v != "news"     &&  //
           v != "override" &&  //
           v != "project"  &&  //
           v != "recur"    &&  //

src/commands/CmdCustom.cpp

@@ -26,7 +26,6 @@
 
 #include <cmake.h>
 #include <CmdCustom.h>
-#include <random>
 #include <sstream>
 #include <map>
 #include <vector>
@@ -254,14 +253,8 @@ int CmdCustom::execute (std::string& output)
   // Inform user about the new release highlights if not presented yet
   Version news_version(Context::getContext ().config.get ("news.version"));
   Version current_version = Version::Current();
-  if (news_version != current_version)
-  {
-    std::random_device device;
-    std::mt19937 random_generator(device());
-    std::uniform_int_distribution<std::mt19937::result_type> twentyfive_percent(1, 4);
-
-    // 25% chance to display the message.
-    if (twentyfive_percent(random_generator) == 4)
+  auto should_nag = news_version != current_version && Context::getContext ().verbose ("news");
+  if (should_nag)
   {
     std::ostringstream notice;
     notice << "Recently upgraded to " << current_version << ". "
@@ -271,7 +264,6 @@ int CmdCustom::execute (std::string& output)
     else if (Context::getContext ().verbose ("header"))
       Context::getContext ().header (notice.str());
   }
-  }
 
   std::string location  = (Context::getContext ().data_dir);
   File pending_data = File (location + "/pending.data");

test/CMakeLists.txt

@@ -138,6 +138,7 @@ set (pythonTests
   math.test.py
   modify.test.py
   nag.test.py
+  news.test.py
   obfuscate.test.py
   oldest.test.py
   operators.test.py

test/news.test.py

@@ -0,0 +1,69 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+###############################################################################
+#
+# Copyright 2024, Adrian Sadłocha.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+#
+# https://www.opensource.org/licenses/mit-license.php
+#
+###############################################################################
+
+import os
+import sys
+import unittest
+
+# Ensure python finds the local simpletap module
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from basetest import Task, TestCase
+
+
+class TestNewsNag(TestCase):
+    def setUp(self):
+        self.t = Task()
+        self.t("add Sample")
+
+    def test_news_nag_gets_displayed_with_default_verbosity_levels(self):
+        """Default verbosity"""
+
+        _, _, err = self.t("")
+        self.assertIn("Please run 'task news'", err)
+
+    def test_news_nag_gets_displayed_when_explicitly_toggled_on(self):
+        """Explicitly toggled on"""
+
+        # Add `footnote` so there is a sink for the nag message.
+        _, _, err = self.t("rc.verbose:news,footnote")
+        self.assertIn("Please run 'task news'", err)
+
+    def test_news_nag_does_not_get_displayed_when_explicitly_toggled_off(self):
+        """Explicitly toggled off"""
+
+        # Add `footnote` so there is a sink for the nag message.
+        _, _, err = self.t("rc.verbose:footnote")
+        self.assertNotIn("Please run 'task news'", err)
+
+
+if __name__ == "__main__":
+    from simpletap import TAPTestRunner
+    unittest.main(testRunner=TAPTestRunner())
+
+# vim: ai sts=4 et sw=4 ft=python