fix(release-pr): update default initial version (googleapis#776)

Author: yi-Xu-0100

__snapshots__/node.js

@@ -81,7 +81,19 @@ exports['Node run uses detected package name in branch 1'] = `
 ]
 `
 
-exports['Node getOpenPROptions returns release PR changes with defaultInitialVersion 1'] = `
+exports['Node getOpenPROptions returns release PR changes with semver patch bump 1'] = `
+### [0.123.5](https://www.github.com/googleapis/node-test-repo/compare/v0.123.4...v0.123.5) (1983-10-10)
+
+
+### Bug Fixes
+
+* **deps:** update dependency com.google.cloud:google-cloud-spanner to v1.50.0 ([08ca011](https://www.github.com/googleapis/node-test-repo/commit/08ca01180a91c0a1ba8992b491db9212))
+* **deps:** update dependency com.google.cloud:google-cloud-storage to v1.120.0 ([845db13](https://www.github.com/googleapis/node-test-repo/commit/845db1381b3d5d20151cad2588f85feb))
+---
+
+`
+
+exports['Node getOpenPROptions returns release PR changes with defaultInitialVersion 1.0.0, when bumpMinorPreMajor is false 1'] = `
 ## 1.0.0 (1983-10-10)
 
 
@@ -93,8 +105,8 @@ exports['Node getOpenPROptions returns release PR changes with defaultInitialVer
 
 `
 
-exports['Node getOpenPROptions returns release PR changes with semver patch bump 1'] = `
-### [0.123.5](https://www.github.com/googleapis/node-test-repo/compare/v0.123.4...v0.123.5) (1983-10-10)
+exports['Node getOpenPROptions returns release PR changes with defaultInitialVersion 0.1.0, when bumpMinorPreMajor is true 1'] = `
+## 0.1.0 (1983-10-10)
 
 
 ### Bug Fixes

src/release-pr.ts

@@ -177,7 +177,7 @@ export class ReleasePR {
   }
 
   protected defaultInitialVersion(): string {
-    return '1.0.0';
+    return this.bumpMinorPreMajor ? '0.1.0' : '1.0.0';
   }
 
   tagSeparator(): string {

test/releasers/node.ts

@@ -75,61 +75,76 @@ describe('Node', () => {
     sandbox.restore();
   });
   describe('getOpenPROptions', () => {
-    it('returns release PR changes with defaultInitialVersion', async () => {
-      const expectedVersion = '1.0.0';
-      const pkgName = 'node-test-repo';
-      const releasePR = new Node({
-        github: new GitHub({owner: 'googleapis', repo: 'node-test-repo'}),
-      });
-      mockRequest(releasePR);
-      // for Node.getPackageName
-      stubFilesToUpdate(releasePR.gh, ['package.json']);
-
-      // no latestTag to pass to getOpenPROptions (never found a release)
-      // releaser should set defaultInitialVersion
-      const openPROptions = await releasePR.getOpenPROptions(COMMITS);
-
-      expect(openPROptions).to.not.be.undefined;
-      expect(openPROptions).to.have.property('sha').equal(COMMITS[0].sha);
-      expect(openPROptions).to.have.property('version').equal(expectedVersion);
-      expect(openPROptions).to.have.property('includePackageName').to.be.false;
-      expect(openPROptions).to.have.property('changelogEntry');
-
-      snapshot(dateSafe(openPROptions!.changelogEntry));
-
-      const perUpdateChangelog = openPROptions!.changelogEntry.substring(
-        0,
-        openPROptions!.changelogEntry.length - 5 // no trailing "\n---\n"
+    const testDefaultInitialVersion = [
+      {version: '1.0.0', bumpMinorPreMajor: false},
+      {version: '0.1.0', bumpMinorPreMajor: true},
+    ];
+    testDefaultInitialVersion.forEach(element => {
+      it(
+        `returns release PR changes with defaultInitialVersion ${element.version}, ` +
+          `when bumpMinorPreMajor is ${element.bumpMinorPreMajor}`,
+        async () => {
+          const expectedVersion = element.version;
+          const pkgName = 'node-test-repo';
+          const releasePR = new Node({
+            github: new GitHub({owner: 'googleapis', repo: 'node-test-repo'}),
+            bumpMinorPreMajor: element.bumpMinorPreMajor,
+          });
+          mockRequest(releasePR);
+          // for Node.getPackageName
+          stubFilesToUpdate(releasePR.gh, ['package.json']);
+
+          // no latestTag to pass to getOpenPROptions (never found a release)
+          // releaser should set defaultInitialVersion
+          const openPROptions = await releasePR.getOpenPROptions(COMMITS);
+
+          expect(openPROptions).to.not.be.undefined;
+          expect(openPROptions).to.have.property('sha').equal(COMMITS[0].sha);
+          expect(openPROptions)
+            .to.have.property('version')
+            .equal(expectedVersion);
+          expect(openPROptions).to.have.property('includePackageName').to.be
+            .false;
+          expect(openPROptions).to.have.property('changelogEntry');
+
+          snapshot(dateSafe(openPROptions!.changelogEntry));
+
+          const perUpdateChangelog = openPROptions!.changelogEntry.substring(
+            0,
+            openPROptions!.changelogEntry.length - 5 // no trailing "\n---\n"
+          );
+          expect(openPROptions)
+            .to.have.property('updates')
+            .to.eql([
+              new PackageJson({
+                path: 'package-lock.json',
+                changelogEntry: perUpdateChangelog,
+                version: expectedVersion,
+                packageName: pkgName,
+              }),
+              new SamplesPackageJson({
+                path: 'samples/package.json',
+                changelogEntry: perUpdateChangelog,
+                version: expectedVersion,
+                packageName: pkgName,
+              }),
+              new Changelog({
+                path: 'CHANGELOG.md',
+                changelogEntry: perUpdateChangelog,
+                version: expectedVersion,
+                packageName: pkgName,
+              }),
+              new PackageJson({
+                path: 'package.json',
+                changelogEntry: perUpdateChangelog,
+                version: expectedVersion,
+                packageName: pkgName,
+              }),
+            ]);
+        }
       );
-      expect(openPROptions)
-        .to.have.property('updates')
-        .to.eql([
-          new PackageJson({
-            path: 'package-lock.json',
-            changelogEntry: perUpdateChangelog,
-            version: expectedVersion,
-            packageName: pkgName,
-          }),
-          new SamplesPackageJson({
-            path: 'samples/package.json',
-            changelogEntry: perUpdateChangelog,
-            version: expectedVersion,
-            packageName: pkgName,
-          }),
-          new Changelog({
-            path: 'CHANGELOG.md',
-            changelogEntry: perUpdateChangelog,
-            version: expectedVersion,
-            packageName: pkgName,
-          }),
-          new PackageJson({
-            path: 'package.json',
-            changelogEntry: perUpdateChangelog,
-            version: expectedVersion,
-            packageName: pkgName,
-          }),
-        ]);
     });
+
     it('returns release PR changes with semver patch bump', async () => {
       const expectedVersion = '0.123.5';
       const pkgName = 'node-test-repo';