Added Phone Number Validation

3 files changed, 43 insertions, 0 deletions

diff --git a/src/edify/library/__init__.py b/src/edify/library/__init__.py
index 88f67d1..549cd4c 100644
--- a/src/edify/library/__init__.py
+++ b/src/edify/library/__init__.py
@@ -1,3 +1,5 @@
 # flake8: noqa
 
+# Import everything from the library.
+from .phone import phone_number
 from .mail import email
diff --git a/src/edify/library/phone.py b/src/edify/library/phone.py
new file mode 100644
index 0000000..5c271af
--- /dev/null
+++ b/src/edify/library/phone.py
@@ -0,0 +1,17 @@
+import re
+
+pattern = "^\\+?\\d{1,4}?[-.\\s]?\\(?\\d{1,3}?\\)?[-.\\s]?\\d{1,4}[-.\\s]?\\d{1,4}[-.\\s]?\\d{1,9}$"
+
+def phone_number(phone: str) -> bool:
+    """Checks if a string is a valid phone number.
+
+    Args:
+        phone (str): The string to check.
+    Returns:
+        bool: True if the string is a valid phone number, False otherwise.
+    """
+
+    if re.match(pattern, phone):
+        return True
+    else:
+        return False
diff --git a/tests/test_phone.py b/tests/test_phone.py
new file mode 100644
index 0000000..6a26af5
--- /dev/null
+++ b/tests/test_phone.py
@@ -0,0 +1,24 @@
+from edify.library import phone_number
+
+def test():
+    phones = {
+        "1234567890": True,
+        "123 456 7890": True,
+        "123-456-7890": True,
+        "123.456.7890": True,
+        "123 456 7890": True,
+        "+1 (123) 456-7890": True,
+        "+1 (123) 456 7890": True,
+        "+1 (123) 456-7890": True,
+        "+102 (123) 456-7890": True,
+        "+91 (123) 456-7890": True,
+        "90122121": True,
+        "12345678901": True,
+        "+1 (124) 232": True,
+        "+1 (123) 45-890": True,
+        "+1 (1) 456-7890": True,
+        "9012": False,
+        "+1 (615) 243-": False
+    }
+    for phone, expectation in phones.items():
+        assert phone_number(phone) == expectation