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๐ 2๋จ๊ณ - ์๊ฐ์ ์ฒญ(๋๋ฉ์ธ ๋ชจ๋ธ) #627
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์๋ ํ์ธ์ ๋ฏผ์ ๋ ๐
๋ช๊ฐ์ง ์ฝ๋ฉํธ ๋จ๊ฒจ๋์๋๋ฐ ํ์ธ๋ถํ๋๋ ค์ :)
๊ถ๊ธํ๊ฑฐ๋ ๊ณ ๋ฏผ์ด ๋๋ ๋ถ๋ถ์ด ์์ผ์๋ค๋ฉด ์ธ์ ๋ pr ์ฝ๋ฉํธ ๋๋ dm์ผ๋ก ์์ฒญ ๋ถํ๋๋ฆฝ๋๋ค.
๊ฐ์ฌํฉ๋๋ค ๐โโ๏ธ
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import nextstep.payments.domain.Payment; | ||
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public class FreeSession implements SessionStrategy { |
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Session
์ด๋ผ๋ ๋๋ฉ์ธ์ด ์ด๋ฏธ ์๊ณ ํ์ฌ ๊ตฌํ์ฒด๋ Session์ ๋ฐ๋ฅธ ๊ฒฐ์ ์ ๋ต์ด๊ธฐ ๋๋ฌธ์ ๋ค์ด๋ฐ์ด FreeSessionEnrollStrategy
์ ๊ฐ์ด ์กฐ๊ธ ๋ ๋ช
ํํ๋ฉด ์ข์ ๊ฒ ๊ฐ์์ :)
public void enroll(Payment payment){ //todo | ||
if(canEnroll(payment)){ | ||
payments.add(payment); | ||
} | ||
} | ||
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@Override | ||
public boolean canEnroll(Payment payment) { | ||
return !isFull() && payment.isTuitionPaid(tuitionFee); | ||
} |
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๊ตฌ์กฐ๊ฐ ์ด์ํด๋ณด์ด๋ ์ด์ ๋ PaidSessionEnrollStrategy
๋ฅผ ์ด๋ป๊ฒ ํ์ฉํ ๊ฑด์ง ๋ช
ํํ์ง ์์์์ธ ๊ฒ ๊ฐ์์. ์ง๊ธ ์ค๊ณํ ๊ฐ์ฒด์ ์ญํ ๋ก๋ณด๋ฉด,
- ๊ฐ์๊ฐ ๊ฒฐ์ ๊ฐ๋ฅํ ์ํฉ์ธ์ง ํ์ธํด์ค๋ค.
- ์ด๋ฅผ ์ํด ํ์ฌ ์๊ฐ์ ์, ์ต๋ ์๊ฐ์ ์, ๊ฐ์๋ฃ๋ฅผ ๊ฐ์ง๋ค.
- ๊ฒฐ์ ๋ฅผ ๋ฐ์ ์๊ฐ๋ฑ๋กํ๋ค.
๋ผ๊ณ ๋ฐ๋ผ๋ณธ๋ค๋ฉด SessionEnrollStrategy
๋ "์๊ฐ ๋ฑ๋ก"์ด๋ผ๋ ๋ช
์ ๋ง ๋์ํด์ฃผ๋ฉด๋๊ณ , canEnroll์ด ๋์ง ์๋๋ค๋ฉด ์์ธ๋ฅผ ํฐํธ๋ฆฌ๋ ๋ฑ๊ณผ ๊ฐ์ ํ์๋ก ์๊ฐํด๋ณผ ์ ์์ ๊ฒ ๊ฐ์์.
public interface SessionEnrollStrategy {
void enroll(Payment payment);
}
๊ฐ ๋์ด์ผํ๊ณ ,
public class PaidSessionEnrollStrategy {
// ..
public void enroll(Payment payment) {
// canEnroll์ด ์๋ ๊ฒฝ์ฐ ์์ธ
// count๋ฅผ ์ฌ๋ฆฌ๊ณ ๊ฒฐ์ ์ ๋ณด ์ ์ฅ
์ด ๋ ์ ์๊ฒ ์ฃ . ๋ค๋ง ํด๋น ํด๋์ค๋ ์ ๋ต์ผ๋ก ๋ถ๋ฆฌ๊ณ ์๊ธฐ ๋๋ฌธ์ ํผ๋์ ์ค ์ ์๋๋ฐ์. "์ ๋ต"์ด๋ผ๋ ๊ฒ์ ์ด๋ค ํ์๋ฅผ ์ด๋ป๊ฒ ์คํํ๋๋๊ฐ ์ฃผ์ ๊ด์ฌ์ฌ์ด์ง ์ํ๋ฅผ ๋ค๊ณ ๊ด๋ฆฌํ๋ฉด์ ์ ๋ต์ ์ถ๊ตฌํ๋๊ฑด ์ ๋ต์์ฒด์ ์ฑ ์์ ํ์ฅ์์ผ๋ฒ๋ฆด ์ ์์ด์. ์ถ์ํ๋ฅผ ํตํ ์ ๊ทผ์ ๋ง์ง๋ง ์ ๋ต์ด๋๋ ๊ณ ๋ฏผํด๋ณด์๋ฉด ์ข์ ๊ฒ ๊ฐ๋ค์ :)
public class Sessions { | ||
private List<Session> values; | ||
} |
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๊ฐ์ธ์ ์ผ๋ก ๋จ์ํ ๋ํ๋งํ๋ ํด๋์ค๋ ์ผ๊ธ์ปฌ๋์ ์ผ๋ก ๋ฌถ์ ํ์๋ ์๋ค๊ณ ์๊ฐํฉ๋๋ค. ํน์ ๋๋ฉ์ธ ์ฑ ์ ์์ด ๋ฆฌ์คํธ์ด๊ธฐ ๋๋ฌธ์ ์ผ๊ธ์ปฌ๋์ ์ผ๋ก ๋๋ค๋ ๊ฒ์ ๊ณผํ ๋ํ์ด ๋ ์ ์์ด์.
public ImageDimensions(int width, int height) { | ||
this.width = width; | ||
this.height = height; | ||
} | ||
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public boolean validDimensions() { |
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์์ฑ์์์ validation์ ํ์ง ์์ผ์๋ ์ด์ ๊ฐ ์์๊น์? ๊ฐ์ฒด์ ์์ฑ์ ๊ฐ์ฒด๊ฐ ๋ด๋นํ๋ ๊ฒ์ด ๊ฐ์ฒด ์์ฑ์ ์์ ์ฑ์ ๋ณด์ฅํด์ :)
BMP; | ||
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public static boolean validExtension(ImageExtension extension) { | ||
if (!Arrays.asList(GIF, JPG, JPEG, PNG, SVG).contains(extension)) { |
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ํน์ ํ์ฅ์๋ง ๊ด๋ฆฌํ๊ณ ์ถ๋ค๋ฉด ์์๋ก ๋นผ๋ฉด ์ข์ ๊ฒ ๊ฐ๋ค์ :)
package nextstep.courses.domain.session.coverImage; | ||
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public class ImageSize { | ||
private int size; |
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๋ถ๋ณ์ผ ์ ์๋ ํ๋๋ค์ ๋ชจ๋ ๋ถ๋ณ์ผ๋ก ์์ ํด์ฃผ์๋ฉด ์ข์ ๊ฒ ๊ฐ์์ :)
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import java.time.LocalDate; | ||
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public class Session { |
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SessionService
๋ฅผ ํตํด enroll ๋ก์ง์ ๊ตฌํํ๋๊ฒ๊น์ง๊ฐ ๋ฏธ์
์ ์๊ตฌ์ฌํญ์ด์์ :)
private SessionStrategy sessionStrategy; | ||
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public Session(SessionCoverImage sessionCoverImage, SessionStatus sessionStatus, SessionStrategy sessionStrategy) { | ||
this(null, null, sessionCoverImage, sessionStatus, sessionStrategy); |
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๋๋ค null์ธ ์ผ์ด์ค๋ฅผ ์์ฑ์์์ ์ง์ํ๋ ์ด์ ๊ฐ ์์๊น์?
private FreeSession freeSession; | ||
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@Test | ||
void ์๊ฐ์ ์ฒญ_๊ฐ๋ฅ์ฌ๋ถ_ํ์ธ() { | ||
freeSession = new FreeSession(); |
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ํ๋๋ค์ ๋ถ๋ณํ๊ฒ ๊ฐ์ ธ๊ฐ์ฃผ์๋ฉด ์ข์ ๊ฒ ๊ฐ์์ :) ๊ฐ๋ณ์ ์ธ ํ๋๋ ๊ฐ๋ณ์ ์ผ ์ ์๋ค๋ผ๋ ์ปจํ ์คํธ๋ฅผ ๊ณ์ ์๊ณ ์ฝ๋๋ฅผ ์ฝ๊ฒ ๋ง๋ค๊ธฐ ๋๋ฌธ์ ๊ฐ๋ฅํ๋ฉด ์ง์ํด์ฃผ์๋ ๊ฒ์ด ์ข์ต๋๋ค.
@Test | ||
void ์๊ฐ์ ์ฒญ_๊ฐ๋ฅ์ฌ๋ถ_ํ์ธ__๊ฐ์_์๊ฐ๋ฃ_ํ์ธ() { | ||
paidSession = new PaidSession(3, 2, 20000); | ||
assertTrue(paidSession.canEnroll(new Payment(20000L))); | ||
paidSession = new PaidSession(3, 2, 20000); | ||
assertFalse(paidSession.canEnroll(new Payment(15000L))); | ||
} | ||
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@Test | ||
void ์๊ฐ์ ์ฒญ_๊ฐ๋ฅ์ฌ๋ถ_ํ์ธ__์ธ์์ด๊ณผ_ํ์ธ() { | ||
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paidSession = new PaidSession(3, 2, 20000); | ||
assertTrue(paidSession.canEnroll(new Payment(20000L))); | ||
paidSession = new PaidSession(2, 2, 20000); | ||
assertFalse(paidSession.canEnroll(new Payment(20000L))); | ||
} |
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์ ๋ฐ์ ์ผ๋ก ํ ์คํธ์์ ์ด๋ค๊ฒ์ ํ ์คํธํ๊ณ ์ํ๋์ง๊ฐ ๋ช ํํ์ง ์์ ๊ฒ ๊ฐ์์. ํ ์คํธ๋น ๊ฒ์ฆํ๊ณ ์ํ๋ ๋์์ ๋ช ํํ์ฌ์ผํ๊ณ , ์ด ๊ธฐ์ค์ด ์ด๋ ต๋ค๊ณ ๋๋ผ์ ๋ค๋ฉด assertion์ด ํ๋์ฌ์ผ๋๋ค๊ณ ์๊ฐํด๋ณด์๋ฉด ํธํ ๊ฒ ๊ฐ์์.
์๋ฅผ๋ค๋ฉด ๊ฐ์ ์๊ฐ๋ฃํ์ธ์์ ๊ฒ์ฆํ๊ณ ์ํ๋ ๊ฒ์ canEnroll์ด true์ด๋ค์ธ๋ฐ false์ธ๊ฑธ ํ ์คํธํ ํ์๊ฐ ์์๊น์? ๋ ์ธ์์ด๊ณผ ํ์ธ์ธ๋ฐ canEnroll์ด true์ด๋ค์ธ๊ฑธ ํ ์คํธํ ํ์๊ฐ ์์๊น์?
์๋ ํ์ธ์!
์ง๋๋ฒ์ ํผ๋๋ฐฑ ์ฃผ์ จ๋ ๋ด์ฉ๊ณผ ํจ๊ป 2๋จ๊ณ PR ๋๋ฆฝ๋๋ค
์ง์๋์ด ๋ง์ํด์ฃผ์ ๋๋ก ์ฌ๋ค๋ฆฌ ๊ฒ์์ด ๋๋๊ณ PR๋๋ฆด๊น ํ๋ค๊ฐ ๋ฆฌ๋ทฐ ๊ธฐ๋ค๋ฆฌ๋ ๋์ ์ฌ๋ ค๋ด ๋๋ค!
์๊ตฌ์ฌํญ์ ์ ํ๋๋ก ํ๋ค๊ณ ํ๋๋ฐ ์ ๊ฐ ๊ฐ์ฒด๋ฅผ ์ ๋๋๊ฑด์ง ๋ชจ๋ฅด๊ฒ ์ต๋๋ค
์ค์ค๋ก ํด๋ณด๊ณ ์ถ์ด์ ์ต๋ํ ๋ค๋ฅธ ๋ถ๋ค์ ์ฝ๋๋ฅผ ํ์ธํ์ง ์๊ณ ํ๋๋ฐ
์ง์ ์ด ์์ด์ PR ๋๋ฆฝ๋๋ค!
ํน์ ๋ณด์๊ณ ํํธ๋ฅผ ์ฃผ์ค ์ ์์๊น์?!
์ฝ๋์์ todo๋ฅผ ๋ฌ์๋์๋๋ฐ์
SessionStrategy๋ฅผ ์์๋ฐ๋ FreeSession์ด๋ PaidSession ๋๋์ด์ PaidSession์ canEnroll์ด true์ผ ๋ payment๋ฅผ ๋ํด์ฃผ๋ ค๊ณ ํ๋๋ฐ ๋ญ๊ฐ ์ด ๋ถ๋ถ์ด ์ด์ํ๊ฒ ๋๊ปด์ง๋๋ค... ๐ข
์ค๋๋ ์ ๋ถํ ๋๋ฆฝ๋๋ค ๐
1๋จ๊ณ ํผ๋๋ฐฑ ๋ฐ์