feat: add medicine dose graph plotting and toggle functionality with comprehensive tests

test_dose_calc.py

@@ -0,0 +1,60 @@
+#!/usr/bin/env python3
+"""
+Simple test script to verify dose calculation functionality.
+"""
+
+import os
+import sys
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), "src"))
+
+import tkinter as tk
+from tkinter import ttk
+
+from src.graph_manager import GraphManager
+
+
+def test_dose_calculation():
+    print("Testing dose calculation...")
+
+    # Create a minimal test setup
+    root = tk.Tk()
+    frame = ttk.LabelFrame(root, text="Test")
+    frame.pack()
+
+    # Create GraphManager instance
+    gm = GraphManager(frame)
+
+    # Test dose calculations
+    test_cases = [
+        ("2025-07-28 18:59:45:150mg", 150.0),
+        ("2025-07-28 18:59:45:150mg|2025-07-28 19:34:19:75mg", 225.0),
+        ("• • • • 2025-07-30 07:50:00:300", 300.0),
+        ("• 2025-07-30 22:50:00:10", 10.0),
+        ("", 0.0),
+        ("nan", 0.0),
+        ("12.5mg", 12.5),
+        ("100|50", 150.0),
+    ]
+
+    all_passed = True
+    for dose_str, expected in test_cases:
+        result = gm._calculate_daily_dose(dose_str)
+        passed = result == expected
+        status = "PASS" if passed else "FAIL"
+        print(f'{status}: "{dose_str[:30]}..." -> Expected: {expected}, Got: {result}')
+        if not passed:
+            all_passed = False
+
+    root.destroy()
+
+    if all_passed:
+        print("\n✅ All dose calculation tests passed!")
+    else:
+        print("\n❌ Some tests failed!")
+
+    return all_passed
+
+
+if __name__ == "__main__":
+    test_dose_calculation()