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Merged
merged 2 commits into from
Sep 25, 2025
Merged

nth-prime, nucleotide-count, ocr-numbers, palindrome-products #3024

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96b7bed
nth-prime, nucleotide-count, ocr-numbers, palindrome-products
AtharvOps Sep 25, 2025
b9e8c0d
Update PrimeCalculatorTest.java
AtharvOps Sep 25, 2025
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7 changes: 6 additions & 1 deletion exercises/practice/nth-prime/src/test/java/PrimeCalculatorTest.java
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Original file line number Diff line number Diff line change
@@ -1,39 +1,44 @@
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;


import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

public class PrimeCalculatorTest {

private PrimeCalculator primeCalculator = new PrimeCalculator();

@Test
@DisplayName("first prime")
public void testFirstPrime() {
assertThat(primeCalculator.nth(1)).isEqualTo(2);
}

@Disabled("Remove to run test")
@Test
@DisplayName("second prime")
public void testSecondPrime() {
assertThat(primeCalculator.nth(2)).isEqualTo(3);
}

@Disabled("Remove to run test")
@Test
@DisplayName("sixth prime")
public void testSixthPrime() {
assertThat(primeCalculator.nth(6)).isEqualTo(13);
}

@Disabled("Remove to run test")
@Test
@DisplayName("big prime")
public void testBigPrime() {
assertThat(primeCalculator.nth(10001)).isEqualTo(104743);
}

@Disabled("Remove to run test")
@Test
@DisplayName("there is no zeroth prime")
public void testUndefinedPrime() {
assertThatExceptionOfType(IllegalArgumentException.class)
.isThrownBy(() -> primeCalculator.nth(0));
Expand Down
6 changes: 6 additions & 0 deletions exercises/practice/nucleotide-count/src/test/java/NucleotideCounterTest.java
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Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.util.Map;
Expand All @@ -9,6 +10,7 @@
public class NucleotideCounterTest {

@Test
@DisplayName("empty strand")
public void testEmptyDnaStringHasNoNucleotides() {
NucleotideCounter nucleotideCounter = new NucleotideCounter("");

Expand All @@ -19,6 +21,7 @@ public void testEmptyDnaStringHasNoNucleotides() {

@Disabled("Remove to run test")
@Test
@DisplayName("can count one nucleotide in single-character input")
public void testDnaStringHasOneNucleotide() {
NucleotideCounter nucleotideCounter = new NucleotideCounter("G");

Expand All @@ -29,6 +32,7 @@ public void testDnaStringHasOneNucleotide() {

@Disabled("Remove to run test")
@Test
@DisplayName("strand with repeated nucleotide")
public void testRepetitiveSequenceWithOnlyGuanine() {
NucleotideCounter nucleotideCounter = new NucleotideCounter("GGGGGGG");

Expand All @@ -39,6 +43,7 @@ public void testRepetitiveSequenceWithOnlyGuanine() {

@Disabled("Remove to run test")
@Test
@DisplayName("strand with multiple nucleotides")
public void testDnaStringHasMultipleNucleotide() {
NucleotideCounter nucleotideCounter
= new NucleotideCounter("AGCTTTTCATTCTGACTGCAACGGGCAATATGTCTCTGTGTGGATTAAAAAAAGAGTGTCTGATAGCAGC");
Expand All @@ -50,6 +55,7 @@ public void testDnaStringHasMultipleNucleotide() {

@Disabled("Remove to run test")
@Test
@DisplayName("strand with invalid nucleotides")
public void testDnaStringHasInvalidNucleotides() {
assertThatThrownBy(() -> new NucleotideCounter("AGXXACT"))
.isInstanceOf(IllegalArgumentException.class);
Expand Down
18 changes: 18 additions & 0 deletions exercises/practice/ocr-numbers/src/test/java/OpticalCharacterReaderTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,13 +2,15 @@
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.util.Arrays;

public class OpticalCharacterReaderTest {

@Test
@DisplayName("Recognizes 0")
public void testReaderRecognizesSingle0() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ ",
Expand All @@ -23,6 +25,7 @@ public void testReaderRecognizesSingle0() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 1")
public void testReaderRecognizesSingle1() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" ",
Expand All @@ -36,6 +39,7 @@ public void testReaderRecognizesSingle1() {

@Disabled("Remove to run test")
@Test
@DisplayName("Unreadable but correctly sized inputs return ?")
public void testReaderReturnsQuestionMarkForUnreadableButCorrectlySizedInput() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" ",
Expand All @@ -49,6 +53,7 @@ public void testReaderReturnsQuestionMarkForUnreadableButCorrectlySizedInput() {

@Disabled("Remove to run test")
@Test
@DisplayName("Input with a number of lines that is not a multiple of four raises an error")
public void testReaderThrowsExceptionWhenNumberOfInputLinesIsNotAMultipleOf4() {

assertThatExceptionOfType(IllegalArgumentException.class)
Expand All @@ -63,6 +68,7 @@ public void testReaderThrowsExceptionWhenNumberOfInputLinesIsNotAMultipleOf4() {

@Disabled("Remove to run test")
@Test
@DisplayName("Input with a number of columns that is not a multiple of three raises an error")
public void testReaderThrowsExceptionWhenNumberOfInputColumnsIsNotAMultipleOf3() {


Expand All @@ -79,6 +85,7 @@ public void testReaderThrowsExceptionWhenNumberOfInputColumnsIsNotAMultipleOf3()

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 110101100")
public void testReaderRecognizesBinarySequence110101100() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ _ _ _ ",
Expand All @@ -92,6 +99,7 @@ public void testReaderRecognizesBinarySequence110101100() {

@Disabled("Remove to run test")
@Test
@DisplayName("Garbled numbers in a string are replaced with ?")
public void testReaderReplacesUnreadableDigitsWithQuestionMarksWithinSequence() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ _ _ ",
Expand All @@ -106,6 +114,7 @@ public void testReaderReplacesUnreadableDigitsWithQuestionMarksWithinSequence()

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 2")
public void testReaderRecognizesSingle2() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ ",
Expand All @@ -119,6 +128,7 @@ public void testReaderRecognizesSingle2() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 3")
public void testReaderRecognizesSingle3() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ ",
Expand All @@ -132,6 +142,7 @@ public void testReaderRecognizesSingle3() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 4")
public void testReaderRecognizesSingle4() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" ",
Expand All @@ -145,6 +156,7 @@ public void testReaderRecognizesSingle4() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 5")
public void testReaderRecognizesSingle5() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ ",
Expand All @@ -158,6 +170,7 @@ public void testReaderRecognizesSingle5() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 6")
public void testReaderRecognizesSingle6() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ ",
Expand All @@ -171,6 +184,7 @@ public void testReaderRecognizesSingle6() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 7")
public void testReaderRecognizesSingle7() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ ",
Expand All @@ -184,6 +198,7 @@ public void testReaderRecognizesSingle7() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 8")
public void testReaderRecognizesSingle8() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ ",
Expand All @@ -197,6 +212,7 @@ public void testReaderRecognizesSingle8() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes 9")
public void testReaderRecognizesSingle9() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ ",
Expand All @@ -210,6 +226,7 @@ public void testReaderRecognizesSingle9() {

@Disabled("Remove to run test")
@Test
@DisplayName("Recognizes string of decimal numbers")
public void testReaderRecognizesSequence1234567890() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ _ _ _ _ _ _ _ ",
Expand All @@ -223,6 +240,7 @@ public void testReaderRecognizesSequence1234567890() {

@Disabled("Remove to run test")
@Test
@DisplayName("Numbers separated by empty lines are recognized. Lines are joined by commas.")
public void testReaderRecognizesAndCorrectlyFormatsMultiRowInput() {
String parsedInput = new OpticalCharacterReader().parse(Arrays.asList(
" _ _ ",
Expand Down
14 changes: 14 additions & 0 deletions exercises/practice/palindrome-products/src/test/java/PalindromeCalculatorTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@
import static org.assertj.core.api.Assertions.assertThatExceptionOfType;

import org.junit.jupiter.api.Disabled;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Test;

import java.util.Arrays;
Expand All @@ -15,6 +16,7 @@ public class PalindromeCalculatorTest {
private PalindromeCalculator palindromeCalculator = new PalindromeCalculator();

@Test
@DisplayName("find the smallest palindrome from single digit factors")
public void smallestPalindromeFromSingleDigitFactors() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand All @@ -30,6 +32,7 @@ public void smallestPalindromeFromSingleDigitFactors() {

@Disabled("Remove to run test")
@Test
@DisplayName("find the largest palindrome from single digit factors")
public void largestPalindromeFromSingleDigitFactors() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand All @@ -46,6 +49,7 @@ public void largestPalindromeFromSingleDigitFactors() {

@Disabled("Remove to run test")
@Test
@DisplayName("find the smallest palindrome from double digit factors")
public void largestPalindromeFromDoubleDigitFactors() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand All @@ -62,6 +66,7 @@ public void largestPalindromeFromDoubleDigitFactors() {

@Disabled("Remove to run test")
@Test
@DisplayName("find the largest palindrome from double digit factors")
public void smallestPalindromeFromDoubleDigitFactors() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand All @@ -78,6 +83,7 @@ public void smallestPalindromeFromDoubleDigitFactors() {

@Disabled("Remove to run test")
@Test
@DisplayName("find the largest palindrome from triple digit factors")
public void largestPalindromeFromTripleDigitFactors() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand All @@ -94,6 +100,7 @@ public void largestPalindromeFromTripleDigitFactors() {

@Disabled("Remove to run test")
@Test
@DisplayName("find the smallest palindrome from triple digit factors")
public void smallestPalindromeFromTripleDigitFactors() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand All @@ -110,6 +117,7 @@ public void smallestPalindromeFromTripleDigitFactors() {

@Disabled("Remove to run test")
@Test
@DisplayName("find the smallest palindrome from four digit factors")
public void smallestPalindromeFromQuadDigitFactors() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand All @@ -126,6 +134,7 @@ public void smallestPalindromeFromQuadDigitFactors() {

@Disabled("Remove to run test")
@Test
@DisplayName("find the largest palindrome from four digit factors")
public void largestPalindromeFromQuadDigitFactors() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand All @@ -142,6 +151,7 @@ public void largestPalindromeFromQuadDigitFactors() {

@Disabled("Remove to run test")
@Test
@DisplayName("empty result for smallest if no palindrome in the range")
public void emtpyResultSmallestNoPalindromeInRange() {

SortedMap<Long, List<List<Integer>>> palindromes = palindromeCalculator.getPalindromeProductsWithFactors(1002,
Expand All @@ -151,6 +161,7 @@ public void emtpyResultSmallestNoPalindromeInRange() {

@Disabled("Remove to run test")
@Test
@DisplayName("empty result for largest if no palindrome in the range")
public void emptyResultLargestNoPalindromeInRange() {

SortedMap<Long, List<List<Integer>>> palindromes = palindromeCalculator.getPalindromeProductsWithFactors(15,
Expand All @@ -160,6 +171,7 @@ public void emptyResultLargestNoPalindromeInRange() {

@Disabled("Remove to run test")
@Test
@DisplayName("error result for smallest if min is more than max")
public void errorSmallestMinIsMoreThanMax() {

assertThatExceptionOfType(IllegalArgumentException.class)
Expand All @@ -169,6 +181,7 @@ public void errorSmallestMinIsMoreThanMax() {

@Disabled("Remove to run test")
@Test
@DisplayName("error result for largest if min is more than max")
public void errorLargestMinIsMoreThanMax() {

assertThatExceptionOfType(IllegalArgumentException.class)
Expand All @@ -178,6 +191,7 @@ public void errorLargestMinIsMoreThanMax() {

@Disabled("Remove to run test")
@Test
@DisplayName("smallest product does not use the smallest factor")
public void smallestProductDoesNotUseTheSmallestFactor() {
List<List<Integer>> expected = Collections.unmodifiableList(
Arrays.asList(
Expand Down