From bb0842a3f741049b429902e1d5baac558b535bdc Mon Sep 17 00:00:00 2001
From: Todd Sedano <todd.sedano@gusto.com>
Date: Thu, 31 Aug 2023 09:13:55 -0700
Subject: [PATCH] Adds FFaker::Number:leading_zero

---
 Changelog.md         | 1 +
 lib/ffaker/number.rb | 4 ++++
 test/test_number.rb  | 8 ++++++++
 3 files changed, 13 insertions(+)

diff --git a/Changelog.md b/Changelog.md
index cabe0d03..0713af5b 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,6 +1,7 @@
 ## development
 
   - Add your change HERE
+  - Adds FFaker::Number.leading_zero_number [@professor]
   - Update README [@professor]
   - Adds FFaker::Number.between [@professor]
   - Fixed `FFaker::Number.unique.number(digits: 1)` under Ruby 3 [@simonhildebrandt]
diff --git a/lib/ffaker/number.rb b/lib/ffaker/number.rb
index 0ec84dae..764201a4 100644
--- a/lib/ffaker/number.rb
+++ b/lib/ffaker/number.rb
@@ -15,6 +15,10 @@ def decimal(whole_digits: 1, fractional_digits: 1)
       FFaker.numerify("#{whole_part_pattern}.#{fractional_part_pattern}").to_f
     end
 
+    def leading_zero_number(digits: 10)
+      "0#{FFaker::Number.number(digits: digits -1)}"
+    end
+
     def between(from: 1.00, to: 5000.00)
       fetch_sample(from..to)
     end
diff --git a/test/test_number.rb b/test/test_number.rb
index 592c3f5d..091a16e9 100644
--- a/test/test_number.rb
+++ b/test/test_number.rb
@@ -43,6 +43,14 @@ def test_decimal_when_invalid_argument
     end
   end
 
+  def test_leading_zero
+    assert @tester.leading_zero_number.is_a?(String)
+    assert @tester.leading_zero_number.digits.count == 10
+    assert @tester.leading_zero_number(digits: 3).digits.count == 3
+    assert_match(/0\d/, @tester.leading_zero_number.to_s)
+    assert_match(/0\d{3}/, @tester.leading_zero_number(digits: 3).to_s)
+  end
+
   def test_between
     from = -50
     to = 50