Karma shows code as uncovered although I have written test cases

Question

I have karma-coverage setup and what I believe to be working, but the reports generated don't seem to be taking all the unit tests into account. I get a lot of "statement not covered" or "function not covered" in the controllers, services, etc. where I have exercised the lines of code within tests.

Here is a snippet incase we are doing something wrong in the testing piece:

Controller

 var simpleMod = angular.module('simpleMod', []);

 simpleMod.controller('simpleController', function($scope){
    $scope.test = "A";

    $scope.TestMethod = function()
    {
       $scope.test = "B";
    };
 });
})();

Test

 var scope;
 var simpleController;

 beforeEach(module('simpleMod'));

 beforeEach(inject(function($controller, $rootScope) {
    scope = $rootScope.$new();

    simpleController = $controller('simpleController', {
       $scope: scope
    });
 }));

 it('Test 001', function() {
    spyOn(scope, 'TestMethod').and.callThrough();

    expect(scope.test).toEqual('A');

    scope.TestMethod();

    expect(scope.TestMethod).toHaveBeenCalled();
    expect(scope.test).toEqual('B');
 });
});

Below is my karmconfig file. Can you please tell me what I did wrong?

module.exports = function(config) {
  config.set({
    plugins:[
      require('karma-coverage'),
      require('karma-phantomjs-launcher'),
      require('karma-chrome-launcher'),
      require('karma-jasmine'),
      require('karma-junit-reporter'),
      require('karma-ng-json2js-preprocessor')
    ],
    basePath: '',
    frameworks: ['jasmine'],
    files: [
      'build/tests/**/test_*.js'
      'build/js/controllers/**/*.js',
    ],
    exclude: [
    ],
    preprocessors: {
      '**/*.json': ['ng-json2js'],
      '**/*.js': ['coverage']
    },
    coveragerReport: {
       dir: '../../coveraqge-results/karma
       reporters: [
             {type: 'html', subdir:'coverage-html'},
             {type: 'text"},
             {type: 'text-summary'}
    }
    coverageIstanbulReporter: {
         reports: ['html', 'lcovonly', 'teamcity'],
         dir: '../install/coverage-results/karma',
         fixWebpackSourcePath: true,
         'report-config': {
                html: {
                    subdir: 'coverage-html'
                },
                lcovonly: {
                     file: 'coverage-lcov/coverage.lcov'
                }
          }
    },
    junitReporter: {
        outputFile: 'test-results.xml',
        outputDir: 'test-results/karma'
    }
    reporters: ['progress', 'junit', 'coverage'],
    port: 9876,
    colors: true,
    logLevel: config.LOG_INFO,
    autoWatch: false,
    browsers: ['PhantomJS'],
    singleRun: true,
    ngJson2JsPreprocessor: {
      stripPrefix: 'app/config/',
      prependPrefix: 'served/'
     }
  });
};