Add tests for string helpers too, update timestamp strings tests

Fix string helpers calls for some edge cases

test-run/string_handling/string_helpers.py

@@ -0,0 +1,65 @@
+"""
+Test string_handling/string_helpers
+"""
+
+import sys
+from decimal import Decimal, getcontext
+from textwrap import shorten
+from corelibs.string_handling.string_helpers import shorten_string, format_number
+
+
+def __sh_shorten_string():
+    string = "hello"
+    length = 3
+    placeholder = " [very long placeholder]"
+    try:
+        result = shorten_string(string, length, placeholder=placeholder)
+        print(f"IN: {string} -> {result}")
+    except ValueError as e:
+        print(f"Failed: {e}")
+    try:
+        result = shorten(string, width=length, placeholder=placeholder)
+        print(f"IN: {string} -> {result}")
+    except ValueError as e:
+        print(f"Failed: {e}")
+
+
+def __sh_format_number():
+    print(f"Max int: {sys.maxsize}")
+    print(f"Max float: {sys.float_info.max}")
+    number = 1234.56
+    precision = 0
+    result = format_number(number, precision)
+    print(f"Format {number} ({precision}) -> {result}")
+    number = 1234.56
+    precision = 100
+    result = format_number(number, precision)
+    print(f"Format {number} ({precision}) -> {result}")
+    number = 123400000000000001.56
+    if number >= sys.maxsize:
+        print("INT Number too big")
+    if number >= sys.float_info.max:
+        print("FLOAT Number too big")
+    precision = 5
+    result = format_number(number, precision)
+    print(f"Format {number} ({precision}) -> {result}")
+
+    precision = 100
+    getcontext().prec = precision
+    number = Decimal(str(1234.56))
+    result = f"{number:,.100f}"
+    print(f"Format {number} ({precision}) -> {result}")
+
+
+def main():
+    """
+    Test: corelibs.string_handling.string_helpers
+    """
+    __sh_shorten_string()
+    __sh_format_number()
+
+
+if __name__ == "__main__":
+    main()
+
+# __END__