Add some test coverage for getBranchesAsObjArray

src/diagrams/git/gitGraphParser.spec.js

@@ -7,15 +7,19 @@ import cryptoRandomString from 'crypto-random-string';
 jest.mock('crypto-random-string');
 
 describe('when parsing a gitGraph', function() {
-  let i = 0;
+  let randomNumber;
   beforeEach(function() {
     parser.yy = gitGraphAst;
     parser.yy.clear();
+    randomNumber = 0;
     cryptoRandomString.mockImplementation(() => {
-      i = i + 1;
-      return String(i);
+      randomNumber = randomNumber + 1;
+      return String(randomNumber);
     });
   });
+  afterEach(function() {
+    cryptoRandomString.mockReset();
+  });
   it('should handle a gitGraph defintion', function() {
     const str = 'gitGraph:\n' + 'commit\n';
 
@@ -234,7 +238,7 @@ describe('when parsing a gitGraph', function() {
     parser.yy.prettyPrint();
   });
 
-  it('it should generate a secure random ID for commits', () => {
+  it('it should generate a secure random ID for commits', function() {
     const str = 'gitGraph:\n' + 'commit\n' + 'commit\n';
     const EXPECTED_LENGTH = 7;
     const EXPECTED_CHARACTERS = '0123456789abcdef';
@@ -261,4 +265,23 @@ describe('when parsing a gitGraph', function() {
       expect(commits[key].id).toEqual(key);
     });
   });
+
+  it('it should generate an array of known branches', function() {
+    const str =
+      'gitGraph:\n' +
+      'commit\n' +
+      'branch b1\n' +
+      'checkout b1\n' +
+      'commit\n' +
+      'commit\n' +
+      'branch b2\n';
+
+    parser.parse(str);
+    const branches = gitGraphAst.getBranchesAsObjArray();
+
+    expect(branches).toHaveLength(3);
+    expect(branches[0]).toHaveProperty('name', 'master');
+    expect(branches[1]).toHaveProperty('name', 'b1');
+    expect(branches[2]).toHaveProperty('name', 'b2');
+  });
 });