Correctly use semverify to increment pre-release versions (#46)

README.md

@@ -345,7 +345,7 @@ git push "${REMOTE}" --delete "${RELEASE_TAG}"
 
 # Delete the local branch and tag
 git branch -D "${RELEASE_BRANCH}"
-git tag -D "${RELEASE_TAG}"
+git tag -d "${RELEASE_TAG}"
 ```
 
 ### How is the changelog updated?

lib/create_github_release/tasks/update_version.rb

@@ -43,7 +43,10 @@ def run
       # @return [void]
       # @api private
       def increment_version
-        `semverify next-#{project.release_type}`
+        command = "semverify next-#{project.release_type}"
+        command += ' --pre' if project.pre
+        command += " --pre-type=#{project.pre_type}" if project.pre_type
+        `#{command}`
         error 'Could not increment version' unless $CHILD_STATUS.success?
       end
 

spec/create_github_release/tasks/update_version_spec.rb

@@ -2,9 +2,17 @@
 
 RSpec.describe CreateGithubRelease::Tasks::UpdateVersion do
   let(:release_type) { 'major' }
+  let(:pre) { false }
+  let(:pre_type) { nil }
   let(:task) { described_class.new(project) }
   let(:project) { CreateGithubRelease::Project.new(options) }
-  let(:options) { CreateGithubRelease::CommandLine::Options.new { |o| o.release_type = release_type } }
+  let(:options) do
+    CreateGithubRelease::CommandLine::Options.new do |o|
+      o.release_type = release_type
+      o.pre = pre
+      o.pre_type = pre_type
+    end
+  end
 
   let(:version_file) { 'lib/my_gem/version.rb' }
 
@@ -29,6 +37,68 @@
       end
     end
 
+    context 'when this is a pre-release when default pre-release type' do
+      let(:pre) { true }
+
+      let(:mocked_commands) do
+        [
+          MockedCommand.new('semverify next-major --pre', exitstatus: semverify_exitstatus),
+          MockedCommand.new('semverify file', stdout: "#{version_file}\n", exitstatus: semverify_file_exitstatus),
+          MockedCommand.new("git add \"#{version_file}\"", exitstatus: git_exitstatus)
+        ]
+      end
+
+      let(:semverify_exitstatus) { 0 }
+      let(:semverify_file_exitstatus) { 0 }
+      let(:git_exitstatus) { 0 }
+
+      it 'should increment the version with the --pre flag' do
+        expect { subject }.not_to raise_error
+      end
+    end
+
+    context 'when this is an alpha pre-release' do
+      let(:pre) { true }
+      let(:pre_type) { 'alpha' }
+
+      let(:mocked_commands) do
+        [
+          MockedCommand.new('semverify next-major --pre --pre-type=alpha', exitstatus: semverify_exitstatus),
+          MockedCommand.new('semverify file', stdout: "#{version_file}\n", exitstatus: semverify_file_exitstatus),
+          MockedCommand.new("git add \"#{version_file}\"", exitstatus: git_exitstatus)
+        ]
+      end
+
+      let(:semverify_exitstatus) { 0 }
+      let(:semverify_file_exitstatus) { 0 }
+      let(:git_exitstatus) { 0 }
+
+      it 'should increment the version with the --pre and --pre-type=alpha args' do
+        expect { subject }.not_to raise_error
+      end
+    end
+
+    context 'when changing the pre-release type to beta' do
+      let(:release_type) { 'pre' }
+      let(:pre_type) { 'beta' }
+
+      let(:mocked_commands) do
+        [
+          MockedCommand.new('semverify next-pre --pre-type=beta', exitstatus: semverify_exitstatus),
+          MockedCommand.new('semverify file', stdout: "#{version_file}\n", exitstatus: semverify_file_exitstatus),
+          MockedCommand.new("git add \"#{version_file}\"", exitstatus: git_exitstatus)
+        ]
+      end
+
+      let(:semverify_exitstatus) { 0 }
+      let(:semverify_file_exitstatus) { 0 }
+      let(:git_exitstatus) { 0 }
+
+      it 'should increment the version with the pre release type and --pre-type=alpha arg' do
+        expect { subject }.not_to raise_error
+      end
+    end
+
     context 'when this is NOT the first release' do
       let(:mocked_commands) do
         [