Minor edits to new header logic and tests

index.js

@@ -90,7 +90,7 @@ class ConventionalChangelog extends Plugin {
     });
   }
 
-  getOldChangelog() {
+  getPreviousChangelog() {
     const { infile } = this.options;
     return new Promise((resolve, reject) => {
       const readStream = fs.createReadStream(infile);
@@ -112,11 +112,11 @@ class ConventionalChangelog extends Plugin {
       this.debug(err);
     }
 
-    let oldChangelog = ""
-    try{
-      oldChangelog = await this.getOldChangelog();
-      oldChangelog = oldChangelog.replace(header.split(/\r\n|\r|\n/g).join(EOL), '');
-    }catch(err){
+    let previousChangelog = '';
+    try {
+      previousChangelog = await this.getPreviousChangelog();
+      previousChangelog = previousChangelog.replace(header.split(/\r\n|\r|\n/g).join(EOL), '');
+    } catch (err) {
       this.debug(err);
     }
 
@@ -125,7 +125,7 @@ class ConventionalChangelog extends Plugin {
       this.debug({ changelog });
     }
 
-    fs.writeFileSync(infile, header + EOL + EOL + changelog + oldChangelog);
+    fs.writeFileSync(infile, header + EOL + EOL + changelog + previousChangelog);
 
     if (!hasInfile) {
       await this.exec(`git add ${infile}`);

test.js

@@ -130,7 +130,7 @@ test('should use provided version', async t => {
 });
 
 test(`should write and update infile (${infile})`, async t => {
-  const header = "The header"
+  const header = 'The header\n\nThe subheader';
   const options = { [namespace]: { preset, infile, header }, git };
   const plugin = factory(Plugin, { namespace, options });
   await runTasks(plugin);
@@ -139,7 +139,10 @@ test(`should write and update infile (${infile})`, async t => {
   {
     await runTasks(plugin);
     const changelog = fs.readFileSync(infile);
-    assert.strictEqual(changelog.toString().trim(), `${header}${EOL}${EOL}The changelog${EOL}${EOL}The changelog`);
+    assert.strictEqual(
+      changelog.toString().trim(),
+      `The header${EOL}${EOL}The subheader${EOL}${EOL}The changelog${EOL}${EOL}The changelog`
+    );
   }
   fs.unlinkSync(infile);
 });