use proper types and validations for port handling

- implement validations for port ranges
- add test cases for these scenarios

1 files changed, 79 insertions, 0 deletions

diff --git a/spec/defines/rule_spec.rb b/spec/defines/rule_spec.rb
index b2a2abd..f2601c6 100644
--- a/spec/defines/rule_spec.rb
+++ b/spec/defines/rule_spec.rb
@@ -133,6 +133,85 @@ describe 'ferm::rule', type: :define do
         it { is_expected.to contain_concat__fragment('filter-OUTPUT-config-include') }
       end
 
+      context 'with a valid destination-port range' do
+        let(:title) { 'filter-portrange' }
+        let :params do
+          {
+            chain: 'INPUT',
+            action: 'ACCEPT',
+            proto: 'tcp',
+            dport: '20000:25000',
+            saddr: '127.0.0.1'
+          }
+        end
+
+        it { is_expected.to compile.with_all_deps }
+        it { is_expected.to contain_concat__fragment('INPUT-filter-portrange').with_content("mod comment comment 'filter-portrange' proto tcp dport 20000:25000 saddr @ipfilter((127.0.0.1)) ACCEPT;\n") }
+        it { is_expected.to contain_concat__fragment('filter-INPUT-config-include') }
+        it { is_expected.to contain_concat__fragment('filter-FORWARD-config-include') }
+        it { is_expected.to contain_concat__fragment('filter-OUTPUT-config-include') }
+      end
+
+      context 'with a malformed source-port range' do
+        let(:title) { 'filter-malformed-portrange' }
+        let :params do
+          {
+            chain: 'INPUT',
+            action: 'ACCEPT',
+            proto: 'tcp',
+            sport: '25000:20000',
+            saddr: '127.0.0.1'
+          }
+        end
+
+        it { is_expected.to compile.and_raise_error(%r{Lower port number of the port range is larger than upper. 25000:20000}) }
+      end
+
+      context 'with an invalid destination-port range' do
+        let(:title) { 'filter-invalid-portrange' }
+        let :params do
+          {
+            chain: 'INPUT',
+            action: 'ACCEPT',
+            proto: 'tcp',
+            dport: '50000:65538',
+            saddr: '127.0.0.1'
+          }
+        end
+
+        it { is_expected.to compile.and_raise_error(%r{The data type should be 'Tuple\[Stdlib::Port, Stdlib::Port\]', not 'Tuple\[Integer\[50000, 50000\], Integer\[65538, 65538\]\]'. The data is \[50000, 65538\]}) }
+      end
+
+      context 'with an invalid destination-port string' do
+        let(:title) { 'filter-invalid-portnumber' }
+        let :params do
+          {
+            chain: 'INPUT',
+            action: 'ACCEPT',
+            proto: 'tcp',
+            dport: '65538',
+            saddr: '127.0.0.1'
+          }
+        end
+
+        it { is_expected.to compile.and_raise_error(%r{parameter 'dport' expects a Ferm::Port .* value, got String}) }
+      end
+
+      context 'with an invalid source-port number' do
+        let(:title) { 'filter-invalid-portnumber' }
+        let :params do
+          {
+            chain: 'INPUT',
+            action: 'ACCEPT',
+            proto: 'tcp',
+            sport: 65_538,
+            saddr: '127.0.0.1'
+          }
+        end
+
+        it { is_expected.to compile.and_raise_error(%r{parameter 'sport' expects a Ferm::Port .* value, got Integer}) }
+      end
+
       context 'with jumping to custom chains' do
         # create custom chain
         let(:pre_condition) do