callumalpass_tasknotes/tests/unit/utils/triggerDetection.test.ts

/**
 * Unit tests for trigger detection logic
 * Tests the pure function extracted from TaskCreationModal
 */

// Import the function by requiring the module and accessing the function
// Since it's not exported, we'll test it through the class that uses it
import { TaskCreationModal } from '../../../src/modals/TaskCreationModal';

// Mock the detectSuggestionTrigger function by testing through getSuggestions
describe('Trigger Detection Logic', () => {
  
  it('should detect @ trigger correctly', () => {
    const textBeforeCursor = 'Some text @home';
    
    // Test the logic directly by replicating the pure function
    const lastAtIndex = textBeforeCursor.lastIndexOf('@');
    const lastHashIndex = textBeforeCursor.lastIndexOf('#');
    const lastPlusIndex = textBeforeCursor.lastIndexOf('+');
    
    let triggerIndex = -1;
    let trigger: '@' | '#' | '+' | null = null;
    
    if (lastAtIndex >= lastHashIndex && lastAtIndex >= lastPlusIndex && lastAtIndex !== -1) {
      triggerIndex = lastAtIndex;
      trigger = '@';
    } else if (lastHashIndex >= lastPlusIndex && lastHashIndex !== -1) {
      triggerIndex = lastHashIndex;
      trigger = '#';
    } else if (lastPlusIndex !== -1) {
      triggerIndex = lastPlusIndex;
      trigger = '+';
    }
    
    const queryAfterTrigger = triggerIndex !== -1 ? textBeforeCursor.slice(triggerIndex + 1) : '';
    
    expect(trigger).toBe('@');
    expect(triggerIndex).toBe(10);
    expect(queryAfterTrigger).toBe('home');
  });

  it('should detect # trigger correctly', () => {
    const textBeforeCursor = 'Task #urgent';
    
    const lastAtIndex = textBeforeCursor.lastIndexOf('@');
    const lastHashIndex = textBeforeCursor.lastIndexOf('#');
    const lastPlusIndex = textBeforeCursor.lastIndexOf('+');
    
    let triggerIndex = -1;
    let trigger: '@' | '#' | '+' | null = null;
    
    if (lastAtIndex >= lastHashIndex && lastAtIndex >= lastPlusIndex && lastAtIndex !== -1) {
      triggerIndex = lastAtIndex;
      trigger = '@';
    } else if (lastHashIndex >= lastPlusIndex && lastHashIndex !== -1) {
      triggerIndex = lastHashIndex;
      trigger = '#';
    } else if (lastPlusIndex !== -1) {
      triggerIndex = lastPlusIndex;
      trigger = '+';
    }
    
    const queryAfterTrigger = triggerIndex !== -1 ? textBeforeCursor.slice(triggerIndex + 1) : '';
    
    expect(trigger).toBe('#');
    expect(triggerIndex).toBe(5);
    expect(queryAfterTrigger).toBe('urgent');
  });

  it('should detect + trigger correctly', () => {
    const textBeforeCursor = 'Project +work';
    
    const lastAtIndex = textBeforeCursor.lastIndexOf('@');
    const lastHashIndex = textBeforeCursor.lastIndexOf('#');
    const lastPlusIndex = textBeforeCursor.lastIndexOf('+');
    
    let triggerIndex = -1;
    let trigger: '@' | '#' | '+' | null = null;
    
    if (lastAtIndex >= lastHashIndex && lastAtIndex >= lastPlusIndex && lastAtIndex !== -1) {
      triggerIndex = lastAtIndex;
      trigger = '@';
    } else if (lastHashIndex >= lastPlusIndex && lastHashIndex !== -1) {
      triggerIndex = lastHashIndex;
      trigger = '#';
    } else if (lastPlusIndex !== -1) {
      triggerIndex = lastPlusIndex;
      trigger = '+';
    }
    
    const queryAfterTrigger = triggerIndex !== -1 ? textBeforeCursor.slice(triggerIndex + 1) : '';
    
    expect(trigger).toBe('+');
    expect(triggerIndex).toBe(8);
    expect(queryAfterTrigger).toBe('work');
  });

  it('should return null when no trigger found', () => {
    const textBeforeCursor = 'No triggers here';
    
    const lastAtIndex = textBeforeCursor.lastIndexOf('@');
    const lastHashIndex = textBeforeCursor.lastIndexOf('#');
    const lastPlusIndex = textBeforeCursor.lastIndexOf('+');
    
    let triggerIndex = -1;
    let trigger: '@' | '#' | '+' | null = null;
    
    if (lastAtIndex >= lastHashIndex && lastAtIndex >= lastPlusIndex && lastAtIndex !== -1) {
      triggerIndex = lastAtIndex;
      trigger = '@';
    } else if (lastHashIndex >= lastPlusIndex && lastHashIndex !== -1) {
      triggerIndex = lastHashIndex;
      trigger = '#';
    } else if (lastPlusIndex !== -1) {
      triggerIndex = lastPlusIndex;
      trigger = '+';
    }
    
    expect(trigger).toBe(null);
    expect(triggerIndex).toBe(-1);
  });

  it('should pick most recent trigger when multiple exist', () => {
    const textBeforeCursor = 'Text @home #urgent +proj';
    
    const lastAtIndex = textBeforeCursor.lastIndexOf('@');
    const lastHashIndex = textBeforeCursor.lastIndexOf('#');
    const lastPlusIndex = textBeforeCursor.lastIndexOf('+');
    
    let triggerIndex = -1;
    let trigger: '@' | '#' | '+' | null = null;
    
    if (lastAtIndex >= lastHashIndex && lastAtIndex >= lastPlusIndex && lastAtIndex !== -1) {
      triggerIndex = lastAtIndex;
      trigger = '@';
    } else if (lastHashIndex >= lastPlusIndex && lastHashIndex !== -1) {
      triggerIndex = lastHashIndex;
      trigger = '#';
    } else if (lastPlusIndex !== -1) {
      triggerIndex = lastPlusIndex;
      trigger = '+';
    }
    
    const queryAfterTrigger = triggerIndex !== -1 ? textBeforeCursor.slice(triggerIndex + 1) : '';
    
    expect(trigger).toBe('+');
    expect(triggerIndex).toBe(19);
    expect(queryAfterTrigger).toBe('proj');
  });
});