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Commitd6a871e

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testing: improve test coverageRangeInSortedArrayTest (#6395)
* testing: improve test coverage RangeInSortedArrayTest* style: fix formatting checkstyle---------Co-authored-by: Deniz Altunkapan <93663085+DenizAltunkapan@users.noreply.github.com>
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‎src/test/java/com/thealgorithms/misc/RangeInSortedArrayTest.java

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@@ -32,4 +32,26 @@ private static Stream<Arguments> provideGetCountLessThanTestCases() {
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returnStream.of(Arguments.of(newint[] {1,2,3,3,4,5},3,4,"Count of elements less than existing key"),Arguments.of(newint[] {1,2,3,3,4,5},4,5,"Count of elements less than non-existing key"),Arguments.of(newint[] {1,2,2,3},5,4,"Count with all smaller elements"),
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Arguments.of(newint[] {2,3,4,5},1,0,"Count with no smaller elements"),Arguments.of(newint[] {},1,0,"Count in empty array"));
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}
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@ParameterizedTest(name ="Edge case {index}: {3}")
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@MethodSource("provideEdgeCasesForSortedRange")
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voidtestSortedRangeEdgeCases(int[]nums,intkey,int[]expectedRange,Stringdescription) {
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assertArrayEquals(expectedRange,RangeInSortedArray.sortedRange(nums,key),description);
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}
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privatestaticStream<Arguments>provideEdgeCasesForSortedRange() {
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returnStream.of(Arguments.of(newint[] {5,5,5,5,5},5,newint[] {0,4},"All elements same as key"),Arguments.of(newint[] {1,2,3,4,5},1,newint[] {0,0},"Key is first element"),Arguments.of(newint[] {1,2,3,4,5},5,newint[] {4,4},"Key is last element"),
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Arguments.of(newint[] {1,2,3,4,5},0,newint[] {-1, -1},"Key less than all elements"),Arguments.of(newint[] {1,2,3,4,5},6,newint[] {-1, -1},"Key greater than all elements"),
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Arguments.of(newint[] {1,2,2,2,3,3,3,4},3,newint[] {4,6},"Multiple occurrences spread"),Arguments.of(newint[] {2},2,newint[] {0,0},"Single element array key exists"),Arguments.of(newint[] {2},3,newint[] {-1, -1},"Single element array key missing"));
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}
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@ParameterizedTest(name ="Edge case {index}: {3}")
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@MethodSource("provideEdgeCasesForGetCountLessThan")
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voidtestGetCountLessThanEdgeCases(int[]nums,intkey,intexpectedCount,Stringdescription) {
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assertEquals(expectedCount,RangeInSortedArray.getCountLessThan(nums,key),description);
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}
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privatestaticStream<Arguments>provideEdgeCasesForGetCountLessThan() {
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returnStream.of(Arguments.of(newint[] {1,2,3,4,5},0,0,"Key less than all elements"),Arguments.of(newint[] {1,2,3,4,5},6,5,"Key greater than all elements"),Arguments.of(newint[] {1},0,0,"Single element greater than key"));
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}
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}

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