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- R.P. Churchill on TWSL Series 07: Discovery and Data Collection
- R.P. Churchill on A Simulationist’s Framework for Business Analysis: Round Two
- LN on A Simulationist’s Framework for Business Analysis: Round Two
- R.P. Churchill on Starting to Learn About the Java Memory Model
- R.P. Churchill on Multidimensional Arrays in Javascript
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Author Archives: R.P. Churchill
Interface Analysis
I’m pursuing yet another certification, this time the IIBA‘s CBAP, for Certified Business Analysis Professional. I chose a 35-hour training course run as a series of interactive webinars over seven successive weekend days and during the second session this past … Continue reading
Buggy, Design Contradictions, and TRIZ (now ARIZ)
A Tuesday session of the Project Summit / Business Analyst World conference (June 20th), featured an interesting talk by the New Jersey Department of Health’s Victoria Roza. She described methods of design and creativity coming out of a practice called … Continue reading
Posted in Engineering
Tagged ARIZ, business analysis, creativity, problem-solving, TRIZ
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Nine SDLC Cross-Functional Areas
I met the very impressive Kim Hardy at an IIBA Meetup in Pittsburgh a few weeks ago. She is passionate about relating her insights to people, their needs and values, and how to make them effective, engaged, and happy while … Continue reading
Addendum To Process Described in Post on Domain-Driven Design
I’ve edited the post from May 11th that describes my preferred project/VV&A methodology. I was reminded, while viewing some excellent presentations at the Project Summit / Business Analyst World conference in DC this week (at which I volunteered) that I … Continue reading
Posted in Management
Tagged customers, project management, requirements management, system architecture, VV&A
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fredfredfred
Example code:
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package main.com.bankapp; /** * Created by rpchurchill on 9/3/2015. */ public class bankAccountClass { //HashSet<Object> accountList; String firstName, lastName; double balance; private EmailNotifier emailNotifier; private daoBankAcctDatabase bankDB; public bankAccountClass() { setBalance(0.0); setFirstName(""); setLastName(""); } public bankAccountClass(String first, String last, double initbal) { setFirstName(first); setLastName(last); setBalance(initbal); } public bankAccountClass(String first, String last, double initbal, EmailNotifier emailNotify) { setFirstName(first); setLastName(last); setBalance(initbal); emailNotifier = emailNotify; } public bankAccountClass(String first, String last, double initbal, daoBankAcctDatabase acctDB) { setFirstName(first); setLastName(last); setBalance(initbal); bankDB = acctDB; } public String getFirstName() { return firstName; } public void setFirstName(String firstName) { this.firstName = firstName; } public void setLastName(String lastName) { this.lastName = lastName; } public void setBalance(double balance) { this.balance = balance; } public String getLastName() { return lastName; } public double getBalance() { return balance; } public void deposit(double depamount) { setBalance(getBalance() + depamount); } //TODO figure out hoow to throw and test for excepptions public void withdrawal(double wdamount) { //throws acctOverdraftException { if (wdamount > getBalance()) { // throw new acctOverdraftException() emailNotifier.sendMessage("fred", "barney", "wilma", "betty"); } else deposit(-wdamount); } public double sumDeposits(int days) { double[] deposits; double sum = 0.0; deposits = bankDB.getDepositsFromDatabase(days); for (double d : deposits) { sum += d; } return sum; } } |
Example tests for above:
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package test.unit.com.bankapp; import junit.framework.Assert; import main.com.bankapp.EmailNotifier; import main.com.bankapp.bankAccountClass; import main.com.bankapp.daoBankAcctDatabase; import org.junit.Test; import static org.mockito.Mockito.*; /** * Created by rpchurchill on 9/3/2015. */ public class bankAccountClassTest { @Test //does account exist public void acctExists() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",0.0); Assert.assertNotNull(account); Assert.assertEquals(0.0, account.getBalance(), 0.00000001); Assert.assertEquals("Fred", account.getFirstName()); Assert.assertEquals("Flintstone",account.getLastName()); } @Test public void acctDepositSimple() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",0.0); account.deposit(100.0); Assert.assertEquals(account.getBalance(), 100.0, 0.00000001); } @Test public void acctDepositCents() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",0.0); account.deposit(43.42); Assert.assertEquals(account.getBalance(), 43.42, 0.00000001); } @Test public void acctDepositModifyExisting() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",0.0); account.deposit(250.24); account.deposit(100.0); Assert.assertEquals(account.getBalance(), 350.24, 0.00000001); } @Test public void acctDepositModifyExisting1() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",100.0); account.deposit(25); Assert.assertEquals(account.getBalance(), 125.0, 0.00000001); account = new bankAccountClass("Fred","Flintstone",23.42); account.deposit(100); Assert.assertEquals(account.getBalance(), 123.42, 0.00000001); account = new bankAccountClass("Fred","Flintstone",12.41); account.deposit(55.00); Assert.assertEquals(account.getBalance(), 67.41, 0.00000001); account = new bankAccountClass("Fred","Flintstone",67.89); account.deposit(10.25); Assert.assertEquals(account.getBalance(), 78.14, 0.00000001); } @Test public void acctDepositModifyMultiple() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",0.0); account.deposit(45.45); account.deposit(50.00); account.deposit(12.73); Assert.assertEquals(account.getBalance(), 108.18, 0.00000001); } @Test public void acctWithdrawal() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",100.0); //try { account.withdrawal(50.00); //} //catch (acctOverdraftException e) {} Assert.assertEquals(account.getBalance(), 50.0, 0.00000001); } @Test public void acctWithdrawalMultiple() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",45.45); //try { account.withdrawal(25.00); //} //catch (acctOverdraftException e) {} account.deposit(50.00); //try { account.withdrawal(10.25); //} //catch (acctOverdraftException e) {} account.deposit(12.73); Assert.assertEquals(account.getBalance(), 72.93, 0.00000001); } /* @Test //(expected = acctOverdraftException.class) public void acctWithdrawalOverdraft() { bankAccountClass account = new bankAccountClass("Fred","Flintstone",25.00); //try { account.withdrawal(50.00); //} //catch (acctOverdraftException e) {} } */ @Test public void acctEmailSentOnOverdraft() { EmailNotifier mockEmailNotifier = mock(EmailNotifier.class); bankAccountClass account = new bankAccountClass("Fred","Flintstone",25.00,mockEmailNotifier); account.withdrawal(50.00); verify(mockEmailNotifier).sendMessage("fred", "barney", "wilma", "betty"); Assert.assertEquals(account.getBalance(), 25.00, 0.0000001); } @Test public void acctDepositsFromDatabase() { daoBankAcctDatabase mockDB = mock(daoBankAcctDatabase.class); //List<Double> deposits = new ArrayList<Double>(); //deposits.add(11.12); //deposits.add(22.23); //deposits.add(33.34); double [] deposits = new double[3]; deposits[0] = 11.12; deposits[1] = 22.23; deposits[2] = 33.34; doReturn(deposits).when(mockDB).getDepositsFromDatabase(30); bankAccountClass account = new bankAccountClass("Fred","Flintstone",0.00,mockDB); //verify(mockDB.getDepositsFromDatabase(30)); Assert.assertEquals(account.sumDeposits(30),66.69,0.0000001); } } |
Domain-Driven Design
At yesterday’s DC PHP Developer’s Community Meetup Andrew Cassell gave a really nice presentation on Domain-Driven Design. He described the major books in the field, some of the main movers and history, and what the idea is all about. In … Continue reading
Posted in Management
Tagged customers, project management, requirements management, system architecture, VV&A
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Node.js
I finally finished working through the exercises in the LearnYouNode suite put out by NodeSchool, which organizes events in cities all over the country. They have a whole pile of different self-directed workshops. It was decent enough introduction to the … Continue reading
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Screen Scraping
At my PHP meetup the other night some of the folks were discussing upgrade paths for content management systems, especially Drupal. They noted that there isn’t yet a good upgrade path to the most recent version from the previous version. … Continue reading
The Confederation Bridge
This weekend I finally made it to my twelfth Canadian province (only Nunavut remains) when I drove across the Confederation Bridge into Prince Edward Island (see also here). The bridge is seven miles long, 40-60 meters (about 131 to 196 … Continue reading
I Helped Design This
In 2004 or 2005 I attended a series of meetings where I helped do traffic projections for this new port of entry (and bridge) at Calais, ME. I also built and ran models of different port designs using the BorderWizard … Continue reading
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