Fix tests failing on Ruby 2.7

.travis.yml

@@ -10,7 +10,8 @@ rvm:
   - 2.6.1
   - ruby-head
 before_install:
-  - gem install bundler
+  - yes | gem update --system=3.1.1 --force
+  - gem install bundler:2.1.1
 before_script:
   - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
   - chmod +x ./cc-test-reporter

test/faker/default/test_faker_birthday_in_leap_year.rb

@@ -20,12 +20,23 @@ def test_birthday_in_leap_year
       @tester.birthday
     end
 
-    assert_raise ArgumentError do
-      ::Date.new(@today.year - @min, @today.month, @today.day)
-    end
+    # The error raised here is changed in Ruby 2.7.
+    if RUBY_VERSION < '2.7'
+      assert_raise ArgumentError do
+        ::Date.new(@today.year - @min, @today.month, @today.day)
+      end
+
+      assert_raise ArgumentError do
+        ::Date.new(@today.year - @max, @today.month, @today.day)
+      end
+    elsif RUBY_VERSION >= '2.7'
+      assert_raise Date::Error do
+        ::Date.new(@today.year - @min, @today.month, @today.day)
+      end
 
-    assert_raise ArgumentError do
-      ::Date.new(@today.year - @max, @today.month, @today.day)
+      assert_raise Date::Error do
+        ::Date.new(@today.year - @max, @today.month, @today.day)
+      end
     end
   end
 end

test/faker/default/test_faker_id_number.rb

@@ -58,8 +58,16 @@ def test_valid_south_african_id_number
 
   def test_invalid_south_african_id_number
     sample = @tester.invalid_south_african_id_number
-    assert_raises ArgumentError do
-      Date.parse(south_african_id_number_to_date_of_birth_string(sample))
+
+    # The error raised here is changed in Ruby 2.7.
+    if RUBY_VERSION < '2.7'
+      assert_raises ArgumentError do
+        Date.parse(south_african_id_number_to_date_of_birth_string(sample))
+      end
+    elsif RUBY_VERSION >= '2.7'
+      assert_raises Date::Error do
+        Date.parse(south_african_id_number_to_date_of_birth_string(sample))
+      end
     end
   end