adding some examples to test

Author: HalemoGPA

readme.md

@@ -45,6 +45,13 @@ To run the application, execute the following command:
 python src/main.py
 ```
 
+## Running the Tests
+
+To run the tests, use the following command:
+```bash
+pytest
+```
+
 ## Examples
 
 ### Basic Function Input
@@ -103,5 +110,21 @@ python src/main.py
 ![constant function](screenshots/ex9.JPG)
 
 
-## automated tests. run some automated tests using `pytest`
-![tests passed](screenshots/ex10.JPG)
+### Empty Function
+- **Function:** ` `
+- **Range:** ` ` to ` `
+- **Expected Output:** Error message: "Function cannot be empty."       <br>  
+![constant function](screenshots/ex11.JPG)
+
+### Min value is larger than Max value
+- **Function:** `x`
+- **Range:** `10` to `5`
+- **Expected Output:** Error message: "Min value must be less than Max value."       <br>  
+![constant function](screenshots/ex12.JPG)
+
+
+### Empty Min value
+- **Function:** `x`
+- **Range:** ` ` to `5`
+- **Expected Output:** Error message: "Min and Max values cannot be empty."       <br>  
+![constant function](screenshots/ex13.JPG)

screenshots/ex11.JPG

@@ -48,9 +48,6 @@ def function_plotter(app_instance, qtbot):
 
 
 def test_basic_function_input(function_plotter, qtbot):
-    """
-    Test plotting a basic function.
-    """
     function_plotter.function_input.setText("5*x^3 + 2*x")
     function_plotter.min_input.setText("0")
     function_plotter.max_input.setText("10")
@@ -70,9 +67,6 @@ def test_invalid_character_in_function(function_plotter, qtbot):
 
 
 def test_complex_formula_function(function_plotter, qtbot):
-    """
-    Test plotting a complex formula function.
-    """
     function_plotter.function_input.setText("5*x^3 + 2*x - 4/x + 7")
     function_plotter.min_input.setText("-10")
     function_plotter.max_input.setText("10")
@@ -81,9 +75,6 @@ def test_complex_formula_function(function_plotter, qtbot):
 
 
 def test_using_sqrt_and_log10_in_function(function_plotter, qtbot):
-    """
-    Test plotting a function using sqrt and log10.
-    """
     function_plotter.function_input.setText("2*x^4 - log10(x) + sqrt(x)")
     function_plotter.min_input.setText("0")
     function_plotter.max_input.setText("50")
@@ -114,9 +105,6 @@ def test_wrong_input_for_min_and_max_values(function_plotter, qtbot):
 
 
 def test_using_infinity_for_min_and_max_values(function_plotter, qtbot):
-    """
-    Test plotting a function with -inf and +inf for min and max values.
-    """
     function_plotter.function_input.setText("x")
     function_plotter.min_input.setText("-inf")
     function_plotter.max_input.setText("inf")
@@ -125,11 +113,41 @@ def test_using_infinity_for_min_and_max_values(function_plotter, qtbot):
 
 
 def test_constant_function_formula(function_plotter, qtbot):
-    """
-    Test plotting a constant function.
-    """
     function_plotter.function_input.setText("5")
     function_plotter.min_input.setText("-10")
     function_plotter.max_input.setText("10")
     qtbot.mouseClick(function_plotter.plot_button, Qt.LeftButton)
-    assert function_plotter.ax.has_data()
+    assert function_plotter.ax.has_data()
+    
+
+def test_empty_function(function_plotter, qtbot):
+    with qtbot.wait_signal(
+        function_plotter.error_message_signal, timeout=5000
+    ) as blocker:
+        function_plotter.function_input.setText("")
+        function_plotter.min_input.setText("")
+        function_plotter.max_input.setText("")
+        qtbot.mouseClick(function_plotter.plot_button, Qt.LeftButton)
+    assert blocker.args[0] == "Function cannot be empty."
+
+
+def test_min_greater_than_max(function_plotter, qtbot):
+    with qtbot.wait_signal(
+        function_plotter.error_message_signal, timeout=5000
+    ) as blocker:
+        function_plotter.function_input.setText("x")
+        function_plotter.min_input.setText("10")
+        function_plotter.max_input.setText("5")
+        qtbot.mouseClick(function_plotter.plot_button, Qt.LeftButton)
+    assert blocker.args[0] == "Min value must be less than Max value."
+
+
+def test_empty_range_values(function_plotter, qtbot):
+    with qtbot.wait_signal(
+        function_plotter.error_message_signal, timeout=5000
+    ) as blocker:
+        function_plotter.function_input.setText("x")
+        function_plotter.min_input.setText("")
+        function_plotter.max_input.setText("5")
+        qtbot.mouseClick(function_plotter.plot_button, Qt.LeftButton)
+    assert blocker.args[0] == "Min and Max values cannot be empty."