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PHPLIB-1359 Add tests on Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) #29

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Jan 18, 2024
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PHPLIB-1359 Add tests on Accumulators ($group, $bucket, $bucketAuto, $setWindowFields) #29

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30 changes: 30 additions & 0 deletions generator/config/accumulator/avg.yaml
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Expand Up @@ -13,3 +13,33 @@ arguments:
name: expression
type:
- resolvesToNumber
tests:
-
name: 'Use in $group Stage'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/avg/#use-in--group-stage'
pipeline:
- $group:
_id: '$item'
avgAmount:
$avg:
$multiply:
- '$price'
- '$quantity'
avgQuantity:
$avg: '$quantity'
-
name: 'Use in $setWindowFields Stage'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/avg/#use-in--setwindowfields-stage'
pipeline:
-
$setWindowFields:
partitionBy: '$state'
sortBy:
orderDate: 1
output:
averageQuantityForState:
$avg: '$quantity'
window:
documents:
- 'unbounded'
- 'current'
32 changes: 32 additions & 0 deletions generator/config/accumulator/bottom.yaml
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Expand Up @@ -21,3 +21,35 @@ arguments:
- expression
description: |
Represents the output for each element in the group and can be any expression.
tests:
-
name: 'Find the Bottom Score'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/bottom/#find-the-bottom-score'
pipeline:
-
$match:
gameId: 'G1'
-
$group:
_id: '$gameId'
playerId:
$bottom:
output:
- '$playerId'
- '$score'
sortBy:
score: -1
-
name: 'Finding the Bottom Score Across Multiple Games'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/bottom/#finding-the-bottom-score-across-multiple-games'
pipeline:
-
$group:
_id: '$gameId'
playerId:
$bottom:
output:
- '$playerId'
- '$score'
sortBy:
score: -1
55 changes: 55 additions & 0 deletions generator/config/accumulator/bottomN.yaml
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Expand Up @@ -28,3 +28,58 @@ arguments:
- expression
description: |
Represents the output for each element in the group and can be any expression.
tests:
-
name: 'Find the Three Lowest Scores'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/bottomN/#find-the-three-lowest-scores'
pipeline:
-
$match:
gameId: 'G1'
-
$group:
_id: '$gameId'
playerId:
$bottomN:
output:
- '$playerId'
- '$score'
sortBy:
score: -1
n: 3
-
name: 'Finding the Three Lowest Score Documents Across Multiple Games'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/bottomN/#finding-the-three-lowest-score-documents-across-multiple-games'
pipeline:
-
$group:
_id: '$gameId'
playerId:
$bottomN:
output:
- '$playerId'
- '$score'
sortBy:
score: -1
n: 3
-
name: 'Computing n Based on the Group Key for $group'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/bottomN/#computing-n-based-on-the-group-key-for--group'
pipeline:
-
$group:
_id:
gameId: '$gameId'
gamescores:
$bottomN:
output: '$score'
n:
$cond:
if:
$eq:
- '$gameId'
- 'G2'
then: 1
else: 3
sortBy:
score: -1
26 changes: 26 additions & 0 deletions generator/config/accumulator/count.yaml
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Expand Up @@ -9,3 +9,29 @@ description: |
Returns the number of documents in the group or window.
Distinct from the $count pipeline stage.
New in MongoDB 5.0.
tests:
-
name: 'Use in $group Stage'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/count-accumulator/#use-in--group-stage'
pipeline:
-
$group:
_id: '$state'
countNumberOfDocumentsForState:
$count: {}
-
name: 'Use in $setWindowFields Stage'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/count-accumulator/#use-in--setwindowfields-stage'
pipeline:
-
$setWindowFields:
partitionBy: '$state'
sortBy:
orderDate: 1
output:
countNumberOfDocumentsForState:
$count: {}
window:
documents:
- 'unbounded'
- 'current'
65 changes: 65 additions & 0 deletions generator/config/accumulator/firstN.yaml
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Expand Up @@ -55,3 +55,68 @@ tests:
$firstN:
input: '$score'
n: 5
-
name: 'Find the First Three Player Scores for a Single Game'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/firstN/#find-the-first-three-player-scores-for-a-single-game'
pipeline:
-
$match:
gameId: 'G1'
-
$group:
_id: '$gameId'
firstThreeScores:
$firstN:
input:
- '$playerId'
- '$score'
n: 3
-
name: 'Finding the First Three Player Scores Across Multiple Games'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/firstN/#finding-the-first-three-player-scores-across-multiple-games'
pipeline:
-
$group:
_id: '$gameId'
playerId:
$firstN:
input:
- '$playerId'
- '$score'
n: 3
-
name: 'Using $sort With $firstN'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/firstN/#using--sort-with--firstn'
pipeline:
-
$sort:
score: -1
-
$group:
_id: '$gameId'
playerId:
$firstN:
input:
- '$playerId'
- '$score'
n: 3
-
name: 'Computing n Based on the Group Key for $group'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/firstN/#computing-n-based-on-the-group-key-for--group'
pipeline:
-
$group:
_id:
gameId: '$gameId'
gamescores:
$firstN:
input: '$score'
n:
$cond:
if:
$eq:
- '$gameId'
- 'G2'
then: 1
else: 3

31 changes: 31 additions & 0 deletions generator/config/accumulator/max.yaml
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Expand Up @@ -13,3 +13,34 @@ arguments:
name: expression
type:
- expression
tests:
-
name: 'Use in $group Stage'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/max/#use-in--group-stage'
pipeline:
-
$group:
_id: '$item'
maxTotalAmount:
$max:
$multiply:
- '$price'
- '$quantity'
maxQuantity:
$max: '$quantity'
-
name: 'Use in $setWindowFields Stage'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/max/#use-in--setwindowfields-stage'
pipeline:
-
$setWindowFields:
partitionBy: '$state'
sortBy:
orderDate: 1
output:
maximumQuantityForState:
$max: '$quantity'
window:
documents:
- 'unbounded'
- 'current'
51 changes: 51 additions & 0 deletions generator/config/accumulator/maxN.yaml
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Expand Up @@ -20,3 +20,54 @@ arguments:
- resolvesToInt
description: |
An expression that resolves to a positive integer. The integer specifies the number of array elements that $maxN returns.
tests:
-
name: 'Find the Maximum Three Scores for a Single Game'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/maxN/#find-the-maximum-three-scores-for-a-single-game'
pipeline:
-
$match:
gameId: 'G1'
-
$group:
_id: '$gameId'
maxThreeScores:
$maxN:
input:
- '$score'
- '$playerId'
n: 3
-
name: 'Finding the Maximum Three Scores Across Multiple Games'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/maxN/#finding-the-maximum-three-scores-across-multiple-games'
pipeline:
-
$group:
_id: '$gameId'
maxScores:
$maxN:
input:
- '$score'
- '$playerId'
n: 3
-
name: 'Computing n Based on the Group Key for $group'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/maxN/#computing-n-based-on-the-group-key-for--group'
pipeline:
-
$group:
_id:
gameId: '$gameId'
gamescores:
$maxN:
input:
- '$score'
- '$playerId'
n:
$cond:
if:
$eq:
- '$gameId'
- 'G2'
then: 1
else: 3
34 changes: 34 additions & 0 deletions generator/config/accumulator/median.yaml
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Expand Up @@ -25,3 +25,37 @@ arguments:
- string # AccumulatorPercentile
description: |
The method that mongod uses to calculate the 50th percentile value. The method must be 'approximate'.
tests:
-
name: 'Use $median as an Accumulator'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/median/#use-operatorname-as-an-accumulator'
pipeline:
-
$group:
_id: ~
test01_median:
$median:
input: '$test01'
method: 'approximate'
-
name: 'Use $median in a $setWindowField Stage'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/median/#use-operatorname-in-a--setwindowfield-stage'
pipeline:
-
$setWindowFields:
sortBy:
test01: 1
output:
test01_median:
$median:
input: '$test01'
method: 'approximate'
window:
range:
- -3
- 3
-
$project:
_id: 0
studentId: 1
test01_median: 1
11 changes: 10 additions & 1 deletion generator/config/accumulator/mergeObjects.yaml
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Expand Up @@ -11,6 +11,15 @@ arguments:
name: document
type:
- resolvesToObject
variadic: array
description: |
Any valid expression that resolves to a document.
tests:
-
name: '$mergeObjects as an Accumulator'
link: 'https://www.mongodb.com/docs/manual/reference/operator/aggregation/mergeObjects/#-mergeobjects-as-an-accumulator'
pipeline:
-
$group:
_id: '$item'
mergedSales:
$mergeObjects: '$quantity'
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