Hva var egentlig sprsmlet Johannes Brodwall Fit Nesse

Hva var egentlig spørsmålet? Johannes Brodwall

Fit. Nesse eksempel #1

En test @Test public void femere. Skal. Gi. Antall() throws Exception { assert. Equals(0, score. For. Kast("femere", 1, 2, 2, 2, 1)); assert. Equals(10, score. For. Kast("femere", 1, 2, 5, 5, 1)); assert. Equals(15, score. For. Kast("femere", 5, 2, 5, 5, 1)); } @Test public void seksere. Skal. Gi. Antall() throws Exception { assert. Equals(0, score. For. Kast("seksere", 1, 2, 2, 2, 1)); assert. Equals(12, score. For. Kast("seksere", 1, 2, 6, 6, 1)); assert. Equals(18, score. For. Kast("seksere", 6, 2, 6, 6, 1)); } @Test public void fullt. Hus() throws Exception { assert. Equals(0, score. For. Kast("fullt_hus", 1, 2, 3, 4, 5)); assert. Equals(11, score. For. Kast("fullt_hus", 1, 3, 3, 1, 3)); assert. Equals(28, score. For. Kast("fullt_hus", 5, 6, 6, 5, 6)); } © Steria

En test (vel. . . tre, egentlig) @Test public void femere. Skal. Gi. Antall() throws Exception { assert. Equals(0, score. For. Kast("femere", 1, 2, 2, 2, 1)); assert. Equals(10, score. For. Kast("femere", 1, 2, 5, 5, 1)); assert. Equals(15, score. For. Kast("femere", 5, 2, 5, 5, 1)); } @Test public void seksere. Skal. Gi. Antall() throws Exception { assert. Equals(0, score. For. Kast("seksere", 1, 2, 2, 2, 1)); assert. Equals(12, score. For. Kast("seksere", 1, 2, 6, 6, 1)); assert. Equals(18, score. For. Kast("seksere", 6, 2, 6, 6, 1)); } @Test public void fullt. Hus() throws Exception { assert. Equals(0, score. For. Kast("fullt_hus", 1, 2, 3, 4, 5)); assert. Equals(11, score. For. Kast("fullt_hus", 1, 3, 3, 1, 3)); assert. Equals(28, score. For. Kast("fullt_hus", 5, 6, 6, 5, 6)); } © Steria

Hva var egentlig spørsmålet? Johannes Brodwall Chief Scientist, Steria

Hva er krav?

”Hvorfor skal kunden ha noe løst? ” p 8 | 07/12/2020 Presentation title © Steria

Behovsforståelse p 9 | 07/12/2020 Presentation title © Steria

”Hva skal løse når? ” p 10 | 07/12/2020 Presentation title © Steria

Planlegging p 11 | 07/12/2020 Presentation title © Steria

”Hvordan skal systemet løse hver enkelt krav? ” p 12 | 07/12/2020 Presentation title © Steria

Kravspesifikasjon p 13 | 07/12/2020 Presentation title © Steria

Eksempel: Signering

Produkteier Utvikler Tester p 15 | 07/12/2020 Presentation title © Steria

Som en betaler, Ønsker jeg å signere mine oppdrag, Slik at ingen kan utgi seg for å være meg Produkteier Utvikler Tester p 16 | 07/12/2020 Presentation title © Steria

Hva med både ok signerte og feilsignerte oppdrag i en fil? Produkteier Utvikler Tester p 17 | 07/12/2020 Presentation title © Steria

Ummm. . . (hjelp? ) Produkteier Utvikler Tester p 18 | 07/12/2020 Presentation title © Steria

Gitt at en fil med oppdrag 1 og 2 Og oppdrag 1 er korrekt signert Og oppdrag 2 er ikke er korrekt signert Når filen valideres Så skal oppdrag 1 behandles normalt Og kunden skal motta en kvittering med teksten ”oppdrag 2 avvist” Produkteier Utvikler Tester p 20 | 07/12/2020 Presentation title © Steria

Fit. Nesse eksempel #1 © Steria

Cu cum (rs pe ber c) Gitt at. . Når. . Så. . . Produkteier Utvikler Tester p 23 | 07/12/2020 Presentation title © Steria

Et faktisk eksempel til

Fra mitt nåværende prosjekt: ”Ta arbeidsoppgave” Gitt jeg går til arbeidslistebilde ”teamets arbeidsliste” Og jeg velger oppgaven med ”Fødselsnummer” lik ” 11111” Og jeg trykker på ”Plukk oppgave” Når jeg går til arbeidslistebilde ”min arbeidsliste” Så skal oppgavelisten inneholde 1 oppgave Og oppgavens ”Fødselsnummer” skal være ” 1111” © Steria

Eksempel: Yatzy

Fullt hus skal gi 25 poeng Produkteier Utvikler Tester p 28 | 07/12/2020 Presentation title © Steria

Fullt hus skal gi 25 poeng Produkteier Utvikler Tester p 30 | 07/12/2020 Presentation title © Steria

Regnes det som fullt hus om fem dice har samme pipcount Produkteier Utvikler Tester p 31 | 07/12/2020 Presentation title © Steria

WTF? !? Produkteier Utvikler Tester p 32 | 07/12/2020 Presentation title © Steria

For eksempel fem 4 -ere er ikke fullt hus Produkteier Utvikler Ok! Tester p 33 | 07/12/2020 Presentation title © Steria

Utviklers tester

Gjenspeiler funksjonelle tester

HUSKELAPP TIL JOHANNES: GÅ TIL ECLIPSE NÅ

Gode enhetstester er også krav

JUnit eksempel #3: Repository @Test public void should. Retrieve. Same. Instance. For. Same. Key() throws Exception { Category inserted = new Category("A"); Serializable id = repository. insert(inserted); repository. flush. Changes(); Category retrieved 1 = repository. retrieve(Category. class, id); Category retrieved 2 = repository. retrieve(Category. class, id); Category retrieved 3 = repository. find(Category. class). iterator(). next(); retrieved 1. set. Category. Name("Z"); assert. Equals(retrieved 1. get. Category. Name(), retrieved 2. get. Category. Name()); assert. Equals(retrieved 1. get. Category. Name(), retrieved 3. get. Category. Name()); } © Steria

JUnit eksempel #3: Repository @Test public void should. Retrieve. Same. Instance. For. Same. Key() throws Exception { Category inserted = new Category("A"); Serializable id = repository. insert(inserted); Given a database with one category repository. flush. Changes(); Category retrieved 1 = repository. retrieve(Category. class, id); Category retrieved 2 = repository. retrieve(Category. class, id); Given I retrieved 3 retrieve this Category = category several times repository. find(Category. class). iterator(). next(); When I change one instance retrieved 1. set. Category. Name("Z"); assert. Equals(retrieved 1. get. Category. Name(), Then the others should be updated, too retrieved 2. get. Category. Name()); assert. Equals(retrieved 1. get. Category. Name(), retrieved 3. get. Category. Name()); } © Steria

JUnit eksempel #3: Repository @Test public void uncommitted. Inserts. Should. Be. Invisible. For. Other. Threads() { repository. begin. Transaction(); Category category = new Category("A"); repository. insert(category); repository. flush. Changes(); assert. Null(retrieve. In. New. Thread(Category. class, category. get. Id())); repository. commit(); assert. Equals(category, retrieve. In. New. Thread(Category. class, category. get. Id())); } © Steria

JUnit eksempel #3: Repository @Test public void uncommitted. Inserts. Should. Be. Invisible. For. Other. Threads() { repository. begin. Transaction(); Given a new while in a transaction Category. I insert category = newcategory Category("A"); repository. insert(category); repository. flush. Changes(); When I retrieve the category from another thread Then I should not be able to see it assert. Null(retrieve. In. New. Thread(Category. class, category. get. Id())); } repository. commit(); When I commit the transaction assert. Equals(category, retrieve. In. New. Thread(Category. class, When I retrieve the category from another category. get. Id())); thread Then I should be able to see it © Steria

JUnit eksempel #4: Websider @Test public void list. Products. Page. Should. Show. All() throws Exception { Product product 1 = new Product(unique. Name("product"), 12300); Product product 2 = new Product(unique. Name("product"), 300); repository. insert. All(product 1, product 2); repository. flush. Changes(); tester. begin. At("/products/"); tester. assert. Text. In. Element("products", product 1. get. Product. Name()); tester. assert. Text. In. Element("products", product 2. get. Product. Name()); } © Steria

JUnit eksempel #4: Websider @Test public void list. Products. Page. Should. Show. All() throws Exception { Product product 1 = new with Product(unique. Name("product"), 12300); Given two products unique names in the database Product product 2 = new Product(unique. Name("product"), 300); repository. insert. All(product 1, product 2); repository. flush. Changes(); When I go to the /products/ web page tester. begin. At("/products/"); tester. assert. Text. In. Element("products", product 1. get. Product. Name()); Then I should see both products product 2. get. Product. Name()); tester. assert. Text. In. Element("products", } © Steria

JUnit eksempel #5: Husk negative tester @Test public void price. Must. Be. Numeric() throws Exception { String old. Name = unique. Name("product"); int old. Price = 1234; Product product = new Product(old. Name, old. Price); Serializable id = repository. insert(product); repository. flush. Changes(); tester. begin. At("/products/" + id + "/edit. html"); tester. set. Text. Field("product. Name", unique. Name("product")); tester. set. Text. Field("price", "this is not a price!"); tester. submit(); tester. assert. Match. In. Element("error. Explaination", "[Pp]rice. *numeric"); Product stored = repository. retrieve(Product. class, id); assert. Equals(old. Price, stored. get. Price()); assert. Equals(old. Name, stored. get. Product. Name()); } © Steria

JUnit eksempel #5: Husk negative tester @Test public void price. Must. Be. Numeric() throws Exception { String old. Name = unique. Name("product"); int old. Price = 1234; Given a product in the database Product product = new Product(old. Name, old. Price); Serializable id = repository. insert(product); repository. flush. Changes(); When I go to the /products/<id>/edit web page And I go change the price to a negative value And I press submit tester. begin. At("/products/" + id + "/edit. html"); tester. set. Text. Field("product. Name", unique. Name("product")); tester. set. Text. Field("price", "this is not a price!"); tester. submit(); tester. assert. Match. In. Element("error. Explaination", "[Pp]rice. *numeric"); Then I should see an error message And the product should be unchanged in the database Product stored = repository. retrieve(Product. class, id); assert. Equals(old. Price, stored. get. Price()); assert. Equals(old. Name, stored. get. Product. Name()); } © Steria

Gitt at. . Når. . Så. . . Utvikler p 47 | 07/12/2020 Presentation

Test først gir godt design

JUnit eksempel #1: Yatzy histogram @Test public void simple. Categories. Should. Be. Sum. Of. Matching. Dice() {. . . } @Test public void small. Strait() {. . . } @Test public void large. Strait() {. . . } @Test public void three. Of. AKind() {. . . } © Steria

JUnit eksempel #1: Yatzy histogram @Test public void three. Of. AKind() { assert. Equals(0, score. For("three_of_a_kind", 1, 1, 2, 2, 3)); assert. Equals(3, score. For("three_of_a_kind", 1, 1, 1, 2, 3)); assert. Equals(6, score. For("three_of_a_kind", 2, 2, 2, 3, 3)); assert. Equals(9, score. For("three_of_a_kind", 1, 1, 3, 3, 3)); } © Steria

JUnit eksempel #1: Yatzy histogram @Test public void full. House() { assert. Equals(0, score. For("full_house", 1, 1, 2, 2, 3)); assert. Equals(0, score. For("full_house", 1, 1, 1, 2, 3)); assert. Equals(25, score. For("full_house", 1, 1, 1, 2, 2)); assert. Equals(25, score. For("full_house", 1, 1, 2, 2, 2)); assert. Equals(25, score. For("full_house", 5, 5, 6, 6, 6)); } © Steria

JUnit eksempel #1: Yatzy histogram @Test public void histogram. Should. Return. Frequency. Of. Each. Die() { int[] roll = { 1, 1, 2, 3, 4 }; int[] histogram = new Score. Card(). histogram(roll); assert. Equals(7, histogram. length); assert. Equals(-1, histogram[0]); assert. Equals(2, histogram[1]); assert. Equals(1, histogram[2]); assert. Equals(1, histogram[3]); assert. Equals(1, histogram[4]); assert. Equals(0, histogram[5]); assert. Equals(0, histogram[6]); © Steria

$JUnit eksempel #1: Yatzy histogram score. Calculators. put("four_of_a_kind", new Score. Calculator() { @Override public$

JUnit eksempel #1: Yatzy histogram score. Calculators. put("four_of_a_kind", new Score. Calculator() { @Override public int calculate(int[] histogram) { for (int i=0; i<histogram. length; i++) { if (histogram[i] >= 4) return i*4; } return 0; } }); © Steria

Hvordan gjøre det bra på eksamen

Kjenn fasiten?

Forstå spørsmålet

Andre typer tester

Only test what you want to work Ron Jeffries p 59 | 07/12/2020 Presentation

Find the defect where it’s cheapest Johannes p 60 | 07/12/2020 Presentation title ©

Todo

JUnit eksempel #2: Session og transaksjoner public interface Repository { Serializable insert(Object entity); <T> T retrieve(Class<T> entity. Type, Serializable id); void update(Object entity); <T> Collection<T> find(Class<T> entity. Type); void delete(Object entity); void flush. Changes(); } © Steria

JUnit eksempel #2: Session og transaksjoner should. Retrieve. Separate. But. Equals. After. Session. Flush() should. Retrieve. Same. Instance. For. Same. Key() rollback. Should. Undo. Inserts. Deletes. And. Updates() uncommitted. Inserts. Should. Be. Invisible. For. Other. Threads() uncommited. Deletes. Should. Be. Invisible. For. Other. Threads() uncommited. Updates. Should. Be. Invisible. For. Other. Threads() © Steria

JUnit eksempel #2: Session og transaksjoner public void start. Session() { session. For. Thread. set( new Nested. Change. Set(permanent. Store)); } public void begin. Transaction() { this. transaction. For. Thread. set( new Nested. Change. Set(permanent. Store)); get. Session(). set. Parent( this. transaction. For. Thread. get()); } © Steria

Repository design