Add initial unit tests for App functionalityAdded basic unit tests for App struct:- New App creation- Resetting state- Input handling- Timer functionality- Words per minute calculation- Reading sentences from file- Drawing typing game UI

1 files changed, 164 insertions, 0 deletions

diff --git a/src/test.rs b/src/test.rs
new file mode 100644
index 0000000..7f2728e
--- /dev/null
+++ b/src/test.rs
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+// Import necessary items for testing
+use crate::{draw_typing_game, input_handler, read_sentences, App, State};
+use crossterm::event::{KeyCode, KeyEvent};
+use std::{
+    io,
+    sync::{Arc, Mutex},
+};
+use tui::layout::Rect;
+use tui::{backend::CrosstermBackend, Terminal};
+
+#[cfg(test)]
+#[allow(unused_imports)] // Ignore unused import warnings within the test module
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_new_app() {
+        // Test that a new App initializes correctly
+        let app_result = App::new();
+        assert!(app_result.is_ok());
+        let app = app_result.unwrap();
+        assert_eq!(app.input_string, "");
+        assert_eq!(app.time_taken, 0);
+        assert_eq!(app.timer, None);
+        assert_eq!(app.state, State::MainMenu);
+        assert_eq!(app.should_exit, false);
+        assert!(!app.sentences.is_empty());
+        assert!(app.current_sentence_index < app.sentences.len());
+    }
+
+    #[test]
+    fn test_reset_app() {
+        // Test the reset functionality of App
+        let mut app = App::new().unwrap();
+        app.current_sentence_index = 0; // Set initial index to 0
+        let old_index = app.current_sentence_index;
+        println!(
+            "Before reset: old_index = {}, current_sentence_index = {}",
+            old_index, app.current_sentence_index
+        );
+
+        app.time_taken = 100;
+        app.input_string = "Some input".to_string();
+        app.reset();
+
+        println!(
+            "After reset: old_index = {}, current_sentence_index = {}",
+            old_index, app.current_sentence_index
+        );
+
+        // Check that current_sentence_index changes after reset
+        assert_ne!(app.current_sentence_index, old_index);
+        assert_eq!(app.time_taken, 0);
+        assert_eq!(app.input_string, "");
+        assert_eq!(app.timer, None);
+        assert_eq!(app.state, State::TypingGame);
+    }
+
+    #[test]
+    fn test_current_sentence() {
+        // Test the retrieval of the current sentence
+        let app = App::new().unwrap();
+        let current_sentence = app.current_sentence();
+        assert!(!current_sentence.is_empty());
+    }
+
+    #[test]
+    fn test_start_timer() {
+        // Test starting the timer
+        let mut app = App::new().unwrap();
+        app.start_timer();
+        assert!(app.timer.is_some());
+    }
+
+    #[test]
+    fn test_update_timer() {
+        // Test updating the timer
+        let mut app = App::new().unwrap();
+        app.start_timer();
+        let initial_time = app.time_taken;
+        std::thread::sleep(std::time::Duration::from_secs(1));
+        app.update_timer();
+        assert!(app.time_taken > initial_time);
+    }
+
+    #[test]
+    fn test_update_wpm() {
+        // Test updating words per minute calculation
+        let mut app = App::new().unwrap();
+        app.time_taken = 60; // 1 minute
+        app.input_string = "This is a test sentence".to_string();
+        let wpm = app.update_wpm();
+        assert_eq!(wpm, 5.0); // 5 words per minute for this sentence
+    }
+
+    #[test]
+    fn test_read_sentences() {
+        // Test reading sentences from a file
+        let sentences_result = read_sentences("sentences.txt");
+        assert!(sentences_result.is_ok());
+        let sentences = sentences_result.unwrap();
+        assert!(!sentences.is_empty());
+    }
+
+    #[test]
+    fn test_draw_typing_game() {
+        // Test drawing the typing game UI
+        let mut app = App::new().unwrap();
+        let stdout = io::stdout();
+        let backend = CrosstermBackend::new(stdout);
+        let mut terminal = Terminal::new(backend).unwrap();
+        let size = Rect::default();
+        draw_typing_game(&mut terminal.get_frame(), size, &mut app);
+        // No need to assert anything here since it's a rendering function
+    }
+
+    #[tokio::test]
+    async fn test_input_handler() {
+        // Test the input handler function
+        let mut app = App::new().unwrap();
+
+        // Simulate typing 'a'
+        let event = KeyEvent::from(KeyCode::Char('a'));
+        input_handler(event, &mut app, Arc::new(Mutex::new(()))).await;
+        assert_eq!(app.input_string, "a");
+
+        // Simulate typing 'b'
+        let event = KeyEvent::from(KeyCode::Char('b'));
+        input_handler(event, &mut app, Arc::new(Mutex::new(()))).await;
+        assert_eq!(app.input_string, "ab");
+
+        // Simulate pressing Backspace
+        let event = KeyEvent::from(KeyCode::Backspace);
+        input_handler(event, &mut app, Arc::new(Mutex::new(()))).await;
+        assert_eq!(app.input_string, "a");
+
+        // Simulate pressing Enter in MainMenu state
+        let event = KeyEvent::from(KeyCode::Enter);
+        app.state = State::MainMenu;
+        input_handler(event, &mut app, Arc::new(Mutex::new(()))).await;
+        assert_eq!(app.state, State::TypingGame);
+        assert_eq!(app.input_string, "");
+
+        // Simulate typing 'T' in TypingGame state
+        let event = KeyEvent::from(KeyCode::Char('T'));
+        app.state = State::TypingGame;
+        input_handler(event, &mut app, Arc::new(Mutex::new(()))).await;
+        assert_eq!(app.input_string, "T");
+
+        // Simulate completing sentence and pressing Enter
+        let sentence = app.current_sentence().to_string();
+        app.input_string = sentence.clone();
+        let event = KeyEvent::from(KeyCode::Enter);
+        input_handler(event, &mut app, Arc::new(Mutex::new(()))).await;
+        assert_eq!(app.state, State::EndScreen);
+        assert_eq!(app.input_string.trim(), sentence.trim());
+
+        // Simulate pressing Esc in EndScreen state
+        let event = KeyEvent::from(KeyCode::Esc);
+        app.state = State::EndScreen;
+        input_handler(event, &mut app, Arc::new(Mutex::new(()))).await;
+        assert_eq!(app.should_exit, true);
+    }
+}