fix(version-resolver): allow v2 updates w/ multiple v2 releases

refs https://forum.ghost.org/t/error-when-attempting-update-to-ghost-2-x/2515

Author: vikaspotluri123

lib/utils/resolve-version.js

@@ -66,14 +66,21 @@ module.exports = function resolveVersion(version, activeVersion, v1 = false, for
             // CASE: you haven't passed `--v1` and you are not about to install a fresh blog
             if (!v1 && activeVersion) {
                 const majorVersionJump = semver.major(activeVersion) !== semver.major(versionToReturn);
+                const v1Versions = versions.filter(version => semver.satisfies(version, `^${activeVersion}`));
 
                 // CASE 1: you want to force update and you are not on the latest v1 version
                 // CASE 2: you don't use force and you are not on the latest v1 version
                 if (majorVersionJump && force && versions.length > 1) {
+                    const latestV2 = versionToReturn;
                     while (!semver.satisfies(versionToReturn, '^1.0.0')) {
                         versionToReturn = versions.pop();
                     }
-                } else if (majorVersionJump && !force && versions.length) {
+
+                    // super dirty hack @todo: fixme
+                    if (versionToReturn === activeVersion) {
+                        versionToReturn = latestV2;
+                    }
+                } else if (majorVersionJump && !force && v1Versions.length) {
                     return Promise.reject(new errors.CliError({
                         message: 'You are about to migrate to Ghost 2.0. Your blog is not on the latest Ghost 1.0 version.',
                         help: 'Please run "ghost update --v1".'

test/unit/utils/resolve-version-spec.js

@@ -105,7 +105,7 @@ describe('Unit: resolveVersion', function () {
         });
 
         it('filters out 2.0 version if v1 param is specified', function () {
-            stubYarn('{"data": ["1.0.0", "1.0.1", "1.52.37", "2.0.0"]}');
+            stubYarn('{"data": ["1.0.0", "1.0.1", "1.52.37", "2.0.0", "2.0.1"]}');
 
             return resolveVersion(null, null, true).then(function (version) {
                 expect(version).to.equal('1.52.37');
@@ -126,7 +126,7 @@ describe('Unit: resolveVersion', function () {
         });
 
         it('filters out 2.0 version if v1 param is specified', function () {
-            stubYarn('{"data": ["1.0.0", "1.0.1", "1.52.37", "2.0.0"]}');
+            stubYarn('{"data": ["1.0.0", "1.0.1", "1.52.37", "2.0.0", "2.0.1"]}');
 
             return resolveVersion(null, '1.52.37', true).then(function () {
                 throw new Error('Version finder should not have resolved');
@@ -146,7 +146,7 @@ describe('Unit: resolveVersion', function () {
 
         describe('jump to next major', function () {
             it('throws error if you aren\'t on the latest v1', function () {
-                stubYarn('{"data": ["1.23.0", "1.24.0", "1.25.0", "2.0.0"]}');
+                stubYarn('{"data": ["1.23.0", "1.24.0", "1.25.0", "2.0.0", "2.0.1"]}');
 
                 return resolveVersion(null, '1.24.0', false).then(function () {
                     throw new Error('Version finder should not have resolved');
@@ -157,34 +157,43 @@ describe('Unit: resolveVersion', function () {
             });
 
             it('resolves if you are on the latest v1', function () {
-                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0"]}');
+                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0", "2.0.1"]}');
 
                 return resolveVersion(null, '1.25.2', false)
                     .then(function (version) {
-                        expect(version).to.eql('2.0.0');
+                        expect(version).to.eql('2.0.1');
                     });
             });
 
             it('resolves using `--v1` and you are\'t on the latest v1', function () {
-                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0"]}');
+                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0", "2.0.1"]}');
 
                 return resolveVersion(null, '1.25.1', true)
                     .then(function (version) {
                         expect(version).to.eql('1.25.2');
                     });
             });
 
+            it('updates to latest v2 with many v2 releases', function () {
+                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0", "2.1.0", "2.2.0"]}');
+
+                return resolveVersion(null, '1.25.2', false, false)
+                    .then(function (version) {
+                        expect(version).to.eql('2.2.0');
+                    });
+            });
+
             it('force updating and you are on the latest v1', function () {
-                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0"]}');
+                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0", "2.0.1"]}');
 
                 return resolveVersion(null, '1.25.2', false, true)
                     .then(function (version) {
-                        expect(version).to.eql('2.0.0');
+                        expect(version).to.eql('2.0.1');
                     });
             });
 
             it('force updating with `--v1`', function () {
-                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0"]}');
+                stubYarn('{"data": ["1.23.0", "1.25.1", "1.25.2", "2.0.0", "2.0.1"]}');
 
                 return resolveVersion(null, '1.25.1', true, true)
                     .then(function (version) {