✅ Added createDefaultConfiguration tests (#8)

src/configuration/createDefaultConfiguration.test.ts

@@ -0,0 +1,105 @@
+import { createDefaultConfiguration } from '../configuration/createDefaultConfiguration';
+import { ConfigurationDefaults } from '../interfaces/configurationDefaults';
+
+describe('createDefaultConfiguration', () => {
+  it('should create default configuration with no defaults provided', () => {
+    const config = createDefaultConfiguration({});
+
+    expect(config).toHaveProperty('jiraIssuePrefix', 'JIRA');
+
+    expect(config).toHaveProperty('jiraTicketLength', '1,');
+
+    expect(config).toHaveProperty('jiraTicketExample', 'JIRA-1234');
+
+    expect(config).toHaveProperty('branchConfiguration');
+
+    expect(config).toHaveProperty('messageConfiguration');
+  });
+
+  it('should create configuration with custom defaults', () => {
+    const defaults: ConfigurationDefaults = {
+      jiraIssuePrefix: 'TEST',
+      jiraTicketLength: '5',
+      jiraTicketExample: 'TEST-54321',
+    };
+
+    const config = createDefaultConfiguration(defaults);
+
+    expect(config.jiraIssuePrefix).toBe('TEST');
+
+    expect(config.jiraTicketLength).toBe('5');
+
+    expect(config.jiraTicketExample).toBe('TEST-54321');
+  });
+
+  it('should create proper branchRegex based on defaults', () => {
+    const defaults: ConfigurationDefaults = {
+      jiraIssuePrefix: 'FOO',
+      jiraTicketLength: '4',
+    };
+
+    const config = createDefaultConfiguration(defaults);
+
+    expect(config.branchConfiguration.branchRegex).toBe(
+      '^(feature|hotfix|revert|release|build|ci|docs|fix|performance|refactor|test)-FOO-[0-9]{4}(?:-[a-z0-9]+)*$',
+    );
+  });
+
+  it('should create proper messageJiraPrefixRegex based on defaults', () => {
+    const defaults: ConfigurationDefaults = {
+      jiraIssuePrefix: 'FOO',
+      jiraTicketLength: '3',
+    };
+
+    const config = createDefaultConfiguration(defaults);
+
+    expect(config.messageConfiguration.messageJiraPrefixRegex).toBe(
+      '^FOO-[0-9]{3}(?![0-9])(?=\\s*:\\s*)\\s*:\\s*',
+    );
+  });
+
+  it('should create proper messageExtractRegex based on defaults', () => {
+    const defaults: ConfigurationDefaults = {
+      jiraIssuePrefix: 'BAR',
+      jiraTicketLength: '2,',
+    };
+
+    const config = createDefaultConfiguration(defaults);
+
+    expect(config.messageConfiguration.messageExtractRegex).toBe(
+      '(?<=BAR-[0-9]{2,}\\s*:\\s*)\\S.*',
+    );
+  });
+
+  it('should handle empty jiraIssuePrefix correctly', () => {
+    const defaults: ConfigurationDefaults = {
+      jiraIssuePrefix: '',
+      jiraTicketLength: '1,4',
+    };
+
+    const config = createDefaultConfiguration(defaults);
+
+    expect(config.jiraIssuePrefix).toBe('');
+
+    expect(config.jiraTicketExample).toBe('-1234');
+
+    expect(config.branchConfiguration.branchJiraTicketRegex).toBe(
+      '-[0-9]{1,4}(?![0-9])',
+    );
+  });
+
+  it('should handle empty jiraTicketLength correctly', () => {
+    const defaults: ConfigurationDefaults = {
+      jiraIssuePrefix: 'TICK',
+      jiraTicketLength: '',
+    };
+
+    const config = createDefaultConfiguration(defaults);
+
+    expect(config.jiraTicketLength).toBe('');
+
+    expect(config.branchConfiguration.branchJiraTicketRegex).toBe(
+      'TICK-[0-9]{}(?![0-9])',
+    );
+  });
+});