Merge 7c57e650da into 0931c8fc67

Extend Django.py Cheat Sheet: Incorporate Unit Testing and Coverage Information

This commit enhances the existing Django.py cheat sheet by integrating guidance on unit testing and coverage analysis. The update includes detailed instructions on writing unit tests within Django applications, setting up test fixtures, executing tests locally, and leveraging coverage tools for assessing code coverage.

Changes:
- Added comprehensive instructions on writing unit tests for Django applications.
- Included guidance on setting up test fixtures and organizing test files.
- Provided commands and examples for running tests locally using Django's testing framework.
- Introduced information on using test coverage tools like `coverage.py` to assess code coverage.
- Enhanced the documentation to ensure clarity and completeness.

This update aims to empower developers with the necessary knowledge and resources to ensure the robustness and reliability of their Django projects through effective testing and coverage analysis.

backend/django.py

@@ -118,3 +118,77 @@ django-admin version                     # display the current django version
 # 8. $ django-admin startproject myproject
 # 9. $ django-admin startapp myapp
 # 10. $ python manage.py runserver
+
+# *****************************************************************************
+# Writing unit tests in django projects
+# *****************************************************************************
+
+# 1. Set Up Your Test Environment:
+#    Before writing tests, ensure that you have your Django project set up. Typically, you'll have a structure similar to this:
+myproject/
+├── myproject/
+│   ├── __init__.py
+│   ├── settings.py
+│   ├── urls.py
+│   └── wsgi.py
+├── myapp/
+│   ├── __init__.py
+│   ├── models.py
+│   ├── views.py
+│   └── tests.py          # This is where your tests will go
+├── manage.py
+└── venv/
+# 2. Create test cases by subclassing django.test.TestCase or django.test.TransactionTestCase
+# myapp/tests.py
+```
+from django.test import TestCase
+from .models import YourModel
+
+class YourModelTestCase(TestCase):
+    @classmethod
+    def setUpClass(cls):
+        # Set up resources for the entire test case class
+        pass
+
+    @classmethod
+    def tearDownClass(cls):
+        # Clean up resources for the entire test case class
+        pass
+
+    def setUp(self):
+        # Set up resources before each test method
+        pass
+
+    def tearDown(self):
+        # Clean up resources after each test method
+        pass
+```
+# --> setUp(): This method is called before each test method is executed. You can use it to set up any necessary state or resources needed for the test.
+# --> tearDown(): This method is called after each test method is executed. It's used to clean up any resources or state that was set up in setUp().
+# 3. Configure your test database: Django creates a separate database for running tests, ensuring that your production data is not affected. This is specified in your settings.py file.
+# settings.py
+```
+DATABASES = {
+    'default': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': BASE_DIR / 'db.sqlite3',
+    },
+    'test': {
+        'ENGINE': 'django.db.backends.sqlite3',
+        'NAME': BASE_DIR / 'test_db.sqlite3',
+    }
+}
+```
+# 4. Run your tests: Django provides a management command, manage.py test, to run your tests. Navigate to your project directory in the terminal and run:
+$ python manage.py test
+$ python manage.py test your_app_name
+$ python manage.py test your_app_name.YourModelTestCase
+$ python manage.py test your_app_name.YourModelTestCase.test_something
+# Django will discover your tests and run them. It will output the results to the terminal.
+# 5. View test coverage: You may also want to measure the coverage of your tests. To do this, you can use third-party packages like coverage. First, install it:
+$ pip install coverage
+$ coverage run manage.py test
+# 6. After running tests, you can generate a report:
+$ coverage report
+# This will show you which parts of your code are covered by tests and which are not.
+

languages/C#.txt

@@ -88,7 +88,7 @@ CHEATSHEET C#
     string newStr = oldStr.Replace("old","new");
 
     //IndexOf
-    //Finds the first occurrence of a string in a larger string
+    //Finds the first ocurrence of a string in a larger string
     //Returns -1 if the string is not found
     String.IndexOf(val, start, num)
     val - string to search for
@@ -102,7 +102,7 @@ CHEATSHEET C#
     String.Split(Char[]);
 
     //ToCharArray
-    //Places selected characters in a string in a char array
+    //Places selected characteres in a string in a char array
     String str = "AaBbCcDd";
     //create array of 8 vowels
     var chars = str.ToCharArray();
@@ -135,7 +135,7 @@ CHEATSHEET C#
     
     6.1 TimeSpan Constructor
         
-    TimeSpan(hour, minute, sec)
+    TimpeSpan(hour, minute, sec)
     
     TimeSpan timeS = new TimeSpan(10, 14, 50);
     TimeSpan timeS_Hours = TimeSpan.FromDays(3640);
@@ -144,8 +144,8 @@ CHEATSHEET C#
 
     Format item syntax: {index[,alignment][:format string]}
     index - Specifies element in list of values to which format is applied
-    alignment - Indicates minimum width (in characters) to display value
+    aligment - Indicates minimun width (in characters) to display value
-    format string - Contains the code which specifies the format of the displayed value
+    format string - Contains the code which specififes the format of the displayed value
 
     7.1 Numeric
 
@@ -293,7 +293,7 @@ CHEATSHEET C#
     [access modifier] className (parameters) [:initializer]
 
     initializer -base calls constructor in base class.
-                 this calls constructor within class.
+                 this calls constuctor within class.
 
     public class nameClass : Initializer {
         public className(dataType param1 , dataType param2, ...) : base(param1, param2)
@@ -313,8 +313,8 @@ CHEATSHEET C#
     abstract – must be implemented by subclass
 
     Passing parameters:
-        1. By default, parameters are passed by value
+        1. By default, parametres are passed by value
-        2. Passing by reference: ref, in and out modifiers
+        2. Passing by reference: ref, in and out modifers
 
     To pass a parameter by reference with the intent of changing the value, use the ref, or out keyword. To pass by reference with the intent of avoiding copying but not changing the value, use the in modifier
 

languages/bash.sh

@@ -524,14 +524,14 @@ Cyan='\033[0;36m'   # Cyan
 White='\033[0;97m'  # White
 
 # Additional colors
-LGrey='\033[0;37m'  # Light Gray
+LGrey='\033[0;37m'  # Ligth Gray
 DGrey='\033[0;90m'  # Dark Gray
-LRed='\033[0;91m'   # Light Red
+LRed='\033[0;91m'   # Ligth Red
-LGreen='\033[0;92m' # Light Green
+LGreen='\033[0;92m' # Ligth Green
-LYellow='\033[0;93m'# Light Yellow
+LYellow='\033[0;93m'# Ligth Yellow
-LBlue='\033[0;94m'  # Light Blue
+LBlue='\033[0;94m'  # Ligth Blue
 LPurple='\033[0;95m'# Light Purple
-LCyan='\033[0;96m'  # Light Cyan
+LCyan='\033[0;96m'  # Ligth Cyan
 
 
 # Bold

languages/golang.md

@@ -397,8 +397,8 @@ d, t := doubleAndTriple(5)
 _, t := doubleAndTriple(3)
 // t = 9
 
-// Functions can defer commands. Deferred commands are
+// Functions can defer commands. Defered commands are
-// ran in a stack order after the execution and
+// runned in a stack order after the execution and
 // returning of a function
 var aux = 0
 
@@ -488,7 +488,7 @@ person3.Age // 0
 
 ## Maps
 
-Maps are data structures that holds values assigned to a key.
+Maps are data structures that holds values assigneds to a key.
 
 ```go
 // Declaring a map
@@ -508,7 +508,7 @@ newYork // "EUA"
 // Delete
 delete(cities, "NY")
 
-// Check if a key is set
+// Check if a key is setted
 value, ok := cities["NY"]
 ok // false
 value // ""

languages/java.md

@@ -308,7 +308,7 @@ for(dataType item : array) {
   //Declare a variable, object name
   String s;
 
-  //Invoke a constructor to create an object
+  //Invoke a contructor to create an object
   s = new String ("Hello World");
 
   //Invoke an instance method that operates on the object's value

languages/javascript.js

@@ -95,9 +95,3 @@ arr.reduce(callback[, initialValue])                 // Apply a function against
 arr.reduceRight(callback[, initialValue])            // Apply a function against an accumulator and each value of the array (from right-to-left) as to reduce it to a single value.
 arr.some(callback[, initialValue])                   // Returns true if at least one element in this array satisfies the provided testing function.
 arr.values()                                         // Returns a new Array Iterator object that contains the values for each index in the array.
-
-// String methods
-String.charAt(index)                                 // Returns the character at the specified index in a string.
-String.indexOf(character)                            // Returns the index of the first occurrence of a specified value in a string.
-String.substring(starting_index, ending_index)       // Returns a new string that is a subset of the original string.
-String.substring(starting_index)                     // Returns a substring from starting index to last index of string.

languages/php.php

@@ -1,8 +1,8 @@
 <?php
 
 // Exit the file, string inside get's echo'ed
-die("This file is not meant to be ran. ¯\_(ツ)_/¯");
+die("This file is not ment to be ran. ¯\_(ツ)_/¯");
-exit("This file is not meant to be ran. ¯\_(ツ)_/¯");
+exit("This file is not ment to be ran. ¯\_(ツ)_/¯");
 
 /**
  * Printing
@@ -17,7 +17,7 @@ var_dump($arr); // Print anything, with type hints for any value and sizes
 $string = 'Awesome cheatsheets';
 
 str_contains($string, 'cheat'); // Find if the string contains the specified string (PHP >= 8.0)
-str_replace('Awesome', 'Bonjour', $string); // Replace all occurrence
+str_replace('Awesome', 'Bonjour', $string); // Replace all occurence
 strcmp($string, 'Awesome cheatsheets'); // Compare two strings
 strpos($string, 'a', 0); // Get position in the string
 str_split($string, 2); // Split the string
@@ -541,7 +541,7 @@ u   Pattern is treated as UTF-8
 \w  Any "word" character (a-z 0-9 _)
 \W  Any non "word" character
 \s  Whitespace (space, tab CRLF)
-\S  Any non whitespace character
+\S  Any non whitepsace character
 \d  Digits (0-9)
 \D  Any non digit character
 .   (Period) - Any character except newline

languages/python.md

@@ -71,7 +71,7 @@
 | import | import libraries/modules/packages | import |
 | from | import specific function/classes from modules/packages | import |
 | try | this block will be tried to get executed | exception handling |
-| except | is any exception/error has occurred it'll be executed | exception handling |
+| except | is any exception/error has occured it'll be executed | exception handling |
 | finally | It'll be executed no matter exception occurs or not | exception handling | 
 | raise | throws any specific error/exception | exception handling |
 | assert | throws an AssertionError if condition is false | exception handling |

tools/ubuntu.sh

@@ -21,7 +21,6 @@ cat /proc/<process_id>/maps   # Show the current virtual memory usage of a Linux
 ip r # Display ip of the server
 
 lsof -i :9000 # List process running on port 9000
-kill -9 $(lsof -t -i:PORT) # Kill the process running on whichever port specified
 
 journalctl -u minio.service -n 100 --no-pager # List last 100 logs for specific service