Remove "Unreleased" title when version was not released

source/lib/create-changelog.test.ts

@@ -14,7 +14,7 @@ const changelogOptionsFactory = Factory.define<ChangelogOptions>(() => {
     };
 });
 
-test('contains "Unreleased" with no version number and the formatted date when version was released', (t) => {
+test('contains no title when version was not released', (t) => {
     const createChangelog = createChangelogFactory({
         getCurrentDate: () => {
             return new Date(0);
@@ -25,10 +25,11 @@ test('contains "Unreleased" with no version number and the formatted date when v
         unreleased: true,
         versionNumber: Maybe.nothing()
     });
+
     const changelog = createChangelog(options);
-    const expectedTitle = '## Unreleased (January 1, 1970)';
+    const expected = '';
 
-    t.true(changelog.includes(expectedTitle));
+    t.is(changelog, expected);
 });
 
 test('contains a title with the version number and the formatted date when version was released', (t) => {

source/lib/create-changelog.ts

@@ -89,13 +89,24 @@ export function createChangelogFactory(dependencies: Dependencies): CreateChange
     const { getCurrentDate, packageInfo } = dependencies;
     const dateFormat = getConfigValueFromPackageInfo(packageInfo, 'dateFormat', defaultDateFormat);
 
+    function createChangelogTitle(options: ChangelogOptions): string {
+        const { unreleased } = options;
+
+        if (unreleased) {
+            return '';
+        }
+
+        const date = formatDate(getCurrentDate(), dateFormat, { locale: enLocale });
+        const title = `## ${options.versionNumber.value} (${date})`;
+
+        return `${title}\n\n`;
+    }
+
     return function createChangelog(options) {
-        const { validLabels, mergedPullRequests, githubRepo, unreleased } = options;
+        const { validLabels, mergedPullRequests, githubRepo } = options;
         const groupedPullRequests = groupByLabel(mergedPullRequests);
-        const date = formatDate(getCurrentDate(), dateFormat, { locale: enLocale });
-        const title = unreleased ? `## Unreleased (${date})` : `## ${options.versionNumber.value} (${date})`;
 
-        let changelog = `${title}\n\n`;
+        let changelog = createChangelogTitle(options);
 
         for (const [label, displayLabel] of validLabels) {
             const pullRequests = groupedPullRequests[label];