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Update strain test suite #395

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merged 1 commit into from
Mar 27, 2024
Merged

Update strain test suite #395

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2 changes: 1 addition & 1 deletion exercises/practice/strain/.meta/config.json
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Original file line number Diff line number Diff line change
Expand Up @@ -13,7 +13,7 @@
".meta/src/reference/groovy/Strain.groovy"
]
},
"blurb": "Implement the `keep` and `discard` operation on collections. Given a collection and a predicate on the collection's elements, `keep` returns a new collection containing those elements where the predicate is true, while `discard` returns a new collection containing those elements where the predicate is false.",
"blurb": "Implement the `keep` and `discard` operation on collections.",
"source": "Conversation with James Edward Gray II",
"source_url": "http://graysoftinc.com/"
}
52 changes: 52 additions & 0 deletions exercises/practice/strain/.meta/tests.toml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,52 @@
# This is an auto-generated file.
#
# Regenerating this file via `configlet sync` will:
# - Recreate every `description` key/value pair
# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
# - Preserve any other key/value pair
#
# As user-added comments (using the # character) will be removed when this file
# is regenerated, comments can be added via a `comment` key.

[26af8c32-ba6a-4eb3-aa0a-ebd8f136e003]
description = "keep on empty list returns empty list"

[f535cb4d-e99b-472a-bd52-9fa0ffccf454]
description = "keeps everything"

[950b8e8e-f628-42a8-85e2-9b30f09cde38]
description = "keeps nothing"

[92694259-6e76-470c-af87-156bdf75018a]
description = "keeps first and last"

[938f7867-bfc7-449e-a21b-7b00cbb56994]
description = "keeps neither first nor last"

[8908e351-4437-4d2b-a0f7-770811e48816]
description = "keeps strings"

[2728036b-102a-4f1e-a3ef-eac6160d876a]
description = "keeps lists"

[ef16beb9-8d84-451a-996a-14e80607fce6]
description = "discard on empty list returns empty list"

[2f42f9bc-8e06-4afe-a222-051b5d8cd12a]
description = "discards everything"

[ca990fdd-08c2-4f95-aa50-e0f5e1d6802b]
description = "discards nothing"

[71595dae-d283-48ca-a52b-45fa96819d2f]
description = "discards first and last"

[ae141f79-f86d-4567-b407-919eaca0f3dd]
description = "discards neither first nor last"

[daf25b36-a59f-4f29-bcfe-302eb4e43609]
description = "discards strings"

[a38d03f9-95ad-4459-80d1-48e937e4acaf]
description = "discards lists"
127 changes: 97 additions & 30 deletions exercises/practice/strain/src/test/groovy/StrainSpec.groovy
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Original file line number Diff line number Diff line change
Expand Up @@ -2,104 +2,171 @@ import spock.lang.*

class StrainSpec extends Specification {

def "Keep returns empty collection"() {
def "Keep on empty list returns empty list"() {
expect:
Strain.keep(collection, predicate) == expected

where:
collection | predicate || expected
[] | { it % 2 == 0 } || []
collection | predicate || expected
[] | { true } || []
}

@Ignore
def "Keep all even numbers"() {
def "Keeps everything"() {
expect:
Strain.keep(collection, predicate) == expected

where:
collection | predicate || expected
[1, 2, 3, 4, 5] | { it % 2 == 0 } || [2, 4]
collection | predicate || expected
[1, 3, 5] | { true } || [1, 3, 5]
}

@Ignore
def "Keep all odd numbers"() {
def "Keeps nothing"() {
expect:
Strain.keep(collection, predicate) == expected

where:
collection | predicate || expected
[1, 2, 3, 4, 5] | { it % 2 != 0 } || [1, 3, 5]
collection | predicate || expected
[1, 3, 5] | { false } || []
}

@Ignore
def "Keep all everything under 10"() {
def "Keeps first and last"() {
expect:
Strain.keep(collection, predicate) == expected

where:
collection | predicate || expected
[1, 2, 3, 4, 5] | { it < 10 } || [1, 2, 3, 4, 5]
collection | predicate || expected
[1, 2, 3] | { it % 2 == 1 } || [1, 3]
}

@Ignore
def "Keep String that start with 'z'"() {
def "Keeps neither first nor last"() {
expect:
Strain.keep(collection, predicate) == expected

where:
collection = ['apple', 'zebra', 'banana', 'zombies', 'cherimoya', 'zelot']
predicate = { it.startsWith('z') }
expected = ['zebra', 'zombies', 'zelot']
collection | predicate || expected
[1, 2, 3] | { it % 2 == 0 } || [2]
}

@Ignore
def "Keeps strings"() {
expect:
Strain.keep(collection, predicate) == expected

where:
collection = ['apple', 'zebra', 'banana', 'zombies', 'cherimoya', 'zealot']
predicate = { it.startsWith('z') }
expected = ['zebra', 'zombies', 'zealot']
}

@Ignore
def "Keeps lists"() {
expect:
Strain.keep(collection, predicate) == expected

where:
collection = [
[1, 2, 3],
[5, 5, 5],
[5, 1, 2],
[2, 1, 2],
[1, 5, 2],
[2, 2, 1],
[1, 2, 5]
]
predicate = { it.contains(5) }
expected = [
[5, 5, 5],
[5, 1, 2],
[1, 5, 2],
[1, 2, 5]
]
}

@Ignore
def "Discard returns empty collection"() {
def "Discard on empty list returns empty list"() {
expect:
Strain.discard(collection, predicate) == expected

where:
collection | predicate || expected
[] | { it % 2 == 0 } || []
collection | predicate || expected
[] | { true } || []
}

@Ignore
def "Discard all even numbers"() {
def "Discards everything"() {
expect:
Strain.discard(collection, predicate) == expected

where:
collection | predicate || expected
[1, 2, 3, 4, 5] | { it % 2 == 0 } || [1, 3, 5]
collection | predicate || expected
[1, 3, 5] | { true } || []
}

@Ignore
def "Discard all odd numbers"() {
def "Discards nothing"() {
expect:
Strain.discard(collection, predicate) == expected

where:
collection | predicate || expected
[1, 2, 3, 4, 5] | { it % 2 != 0 } || [2, 4]
collection | predicate || expected
[1, 3, 5] | { false } || [1, 3, 5]
}

@Ignore
def "Discard all everything under 10"() {
def "Discards first and last"() {
expect:
Strain.discard(collection, predicate) == expected

where:
collection | predicate || expected
[1, 2, 3, 4, 5] | { it < 10 } || []
collection | predicate || expected
[1, 2, 3] | { it % 2 == 1 } || [2]
}

@Ignore
def "Discard String that start with 'z'"() {
def "Discards neither first nor last"() {
expect:
Strain.discard(collection, predicate) == expected

where:
collection = ['apple', 'zebra', 'banana', 'zombies', 'cherimoya', 'zelot']
collection | predicate || expected
[1, 2, 3] | { it % 2 == 0 } || [1, 3]
}

@Ignore
def "Discards strings"() {
expect:
Strain.discard(collection, predicate) == expected

where:
collection = ['apple', 'zebra', 'banana', 'zombies', 'cherimoya', 'zealot']
predicate = { it.startsWith('z') }
expected = ['apple', 'banana', 'cherimoya']
}

@Ignore
def "Discards lists"() {
expect:
Strain.discard(collection, predicate) == expected

where:
collection = [
[1, 2, 3],
[5, 5, 5],
[5, 1, 2],
[2, 1, 2],
[1, 5, 2],
[2, 2, 1],
[1, 2, 5]
]
predicate = { it.contains(5) }
expected = [
[1, 2, 3],
[2, 1, 2],
[2, 2, 1]
]
}
}
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