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query_aggregation_test.go
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query_aggregation_test.go
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package gorethink
import (
test "gopkg.in/check.v1"
)
func (s *RethinkSuite) TestAggregationReduce(c *test.C) {
var response int
query := Expr(arr).Reduce(func(acc, val Term) Term {
return acc.Add(val)
})
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.One(&response)
c.Assert(err, test.IsNil)
c.Assert(response, test.Equals, 45)
}
func (s *RethinkSuite) TestAggregationExprCount(c *test.C) {
var response int
query := Expr(arr).Count()
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.One(&response)
c.Assert(err, test.IsNil)
c.Assert(response, test.Equals, 9)
}
func (s *RethinkSuite) TestAggregationDistinct(c *test.C) {
var response []int
query := Expr(darr).Distinct()
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, test.HasLen, 5)
}
func (s *RethinkSuite) TestAggregationGroupMapReduce(c *test.C) {
var response []interface{}
query := Expr(objList).Group(func(row Term) Term {
return row.Field("id").Mod(2).Eq(0)
}).Map(func(row Term) Term {
return row.Field("num")
}).Reduce(func(acc, num Term) Term {
return acc.Add(num)
})
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"reduction": 135, "group": false},
map[string]interface{}{"reduction": 70, "group": true},
})
}
func (s *RethinkSuite) TestAggregationGroupMapReduceUngroup(c *test.C) {
var response []interface{}
query := Expr(objList).Group(func(row Term) Term {
return row.Field("id").Mod(2).Eq(0)
}).Map(func(row Term) Term {
return row.Field("num")
}).Reduce(func(acc, num Term) Term {
return acc.Add(num)
}).Ungroup().OrderBy("reduction")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"reduction": 70, "group": true},
map[string]interface{}{"reduction": 135, "group": false},
})
}
func (s *RethinkSuite) TestAggregationGroupMapReduceTable(c *test.C) {
// Ensure table + database exist
DbCreate("test").Exec(sess)
Db("test").TableCreate("TestAggregationGroupedMapReduceTable").Exec(sess)
// Insert rows
err := Db("test").Table("TestAggregationGroupedMapReduceTable").Insert(objList).Exec(sess)
c.Assert(err, test.IsNil)
var response []interface{}
query := Db("test").Table("TestAggregationGroupedMapReduceTable").Group(func(row Term) Term {
return row.Field("id").Mod(2).Eq(0)
}).Map(func(row Term) Term {
return row.Field("num")
}).Reduce(func(acc, num Term) Term {
return acc.Add(num)
})
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"reduction": 135, "group": false},
map[string]interface{}{"reduction": 70, "group": true},
})
}
func (s *RethinkSuite) TestAggregationGroupCount(c *test.C) {
var response []interface{}
query := Expr(objList).Group("g1")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"group": 1, "reduction": []interface{}{
map[string]interface{}{"id": 1, "num": 0, "g1": 1, "g2": 1},
map[string]interface{}{"num": 15, "g1": 1, "g2": 1, "id": 6},
map[string]interface{}{"id": 7, "num": 0, "g1": 1, "g2": 2},
}},
map[string]interface{}{"group": 2, "reduction": []interface{}{
map[string]interface{}{"g1": 2, "g2": 2, "id": 2, "num": 5},
map[string]interface{}{"num": 0, "g1": 2, "g2": 3, "id": 4},
map[string]interface{}{"num": 100, "g1": 2, "g2": 3, "id": 5},
map[string]interface{}{"g2": 3, "id": 9, "num": 25, "g1": 2},
}},
map[string]interface{}{"group": 3, "reduction": []interface{}{
map[string]interface{}{"num": 10, "g1": 3, "g2": 2, "id": 3},
}},
map[string]interface{}{"group": 4, "reduction": []interface{}{
map[string]interface{}{"id": 8, "num": 50, "g1": 4, "g2": 2},
}},
})
}
func (s *RethinkSuite) TestAggregationGroupSum(c *test.C) {
var response []interface{}
query := Expr(objList).Group("g1").Sum("num")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"group": 1, "reduction": 15},
map[string]interface{}{"reduction": 130, "group": 2},
map[string]interface{}{"reduction": 10, "group": 3},
map[string]interface{}{"group": 4, "reduction": 50},
})
}
func (s *RethinkSuite) TestAggregationGroupAvg(c *test.C) {
var response []interface{}
query := Expr(objList).Group("g1").Avg("num")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"group": 1, "reduction": 5},
map[string]interface{}{"group": 2, "reduction": 32.5},
map[string]interface{}{"group": 3, "reduction": 10},
map[string]interface{}{"group": 4, "reduction": 50},
})
}
func (s *RethinkSuite) TestAggregationGroupMin(c *test.C) {
var response []interface{}
query := Expr(objList).Group("g1").Min("num")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"group": 1, "reduction": map[string]interface{}{"id": 1, "num": 0, "g1": 1, "g2": 1}},
map[string]interface{}{"reduction": map[string]interface{}{"num": 0, "g1": 2, "g2": 3, "id": 4}, "group": 2},
map[string]interface{}{"group": 3, "reduction": map[string]interface{}{"num": 10, "g1": 3, "g2": 2, "id": 3}},
map[string]interface{}{"group": 4, "reduction": map[string]interface{}{"g2": 2, "id": 8, "num": 50, "g1": 4}},
})
}
func (s *RethinkSuite) TestAggregationGroupMax(c *test.C) {
var response []interface{}
query := Expr(objList).Group("g1").Max("num")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"reduction": map[string]interface{}{"num": 15, "g1": 1, "g2": 1, "id": 6}, "group": 1},
map[string]interface{}{"group": 2, "reduction": map[string]interface{}{"num": 100, "g1": 2, "g2": 3, "id": 5}},
map[string]interface{}{"group": 3, "reduction": map[string]interface{}{"num": 10, "g1": 3, "g2": 2, "id": 3}},
map[string]interface{}{"group": 4, "reduction": map[string]interface{}{"g2": 2, "id": 8, "num": 50, "g1": 4}},
})
}
func (s *RethinkSuite) TestAggregationMin(c *test.C) {
// Ensure table + database exist
DbCreate("test").Exec(sess)
Db("test").TableCreate("Table2").Exec(sess)
Db("test").Table("Table2").IndexCreate("num").Exec(sess)
// Insert rows
Db("test").Table("Table2").Insert(objList).Exec(sess)
// Test query
var response interface{}
query := Db("test").Table("Table2").MinIndex("num")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.One(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, map[string]interface{}{"id": 1, "g1": 1, "g2": 1, "num": 0})
}
func (s *RethinkSuite) TestAggregationMaxIndex(c *test.C) {
// Ensure table + database exist
DbCreate("test").Exec(sess)
Db("test").TableCreate("Table2").Exec(sess)
Db("test").Table("Table2").IndexCreate("num").Exec(sess)
// Insert rows
Db("test").Table("Table2").Insert(objList).Exec(sess)
// Test query
var response interface{}
query := Db("test").Table("Table2").MaxIndex("num")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.One(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, map[string]interface{}{"id": 5, "g1": 2, "g2": 3, "num": 100})
}
func (s *RethinkSuite) TestAggregationMultipleGroupSum(c *test.C) {
var response []interface{}
query := Expr(objList).Group("g1", "g2").Sum("num")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"group": []interface{}{1, 1}, "reduction": 15},
map[string]interface{}{"reduction": 0, "group": []interface{}{1, 2}},
map[string]interface{}{"group": []interface{}{2, 2}, "reduction": 5},
map[string]interface{}{"reduction": 125, "group": []interface{}{2, 3}},
map[string]interface{}{"group": []interface{}{3, 2}, "reduction": 10},
map[string]interface{}{"group": []interface{}{4, 2}, "reduction": 50},
})
}
func (s *RethinkSuite) TestAggregationGroupChained(c *test.C) {
var response []interface{}
query := Expr(objList).Group("g1").Max("num").Field("g2")
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"group": 1, "reduction": 1},
map[string]interface{}{"group": 2, "reduction": 3},
map[string]interface{}{"group": 3, "reduction": 2},
map[string]interface{}{"group": 4, "reduction": 2},
})
}
func (s *RethinkSuite) TestAggregationGroupUngroup(c *test.C) {
var response []interface{}
query := Expr(objList).Group("g1", "g2").Max("num").Ungroup()
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.All(&response)
c.Assert(err, test.IsNil)
c.Assert(response, jsonEquals, []interface{}{
map[string]interface{}{"group": []interface{}{1, 1}, "reduction": map[string]interface{}{"g1": 1, "g2": 1, "id": 6, "num": 15}},
map[string]interface{}{"group": []interface{}{1, 2}, "reduction": map[string]interface{}{"g1": 1, "g2": 2, "id": 7, "num": 0}},
map[string]interface{}{"group": []interface{}{2, 2}, "reduction": map[string]interface{}{"g1": 2, "g2": 2, "id": 2, "num": 5}},
map[string]interface{}{"group": []interface{}{2, 3}, "reduction": map[string]interface{}{"g1": 2, "g2": 3, "id": 5, "num": 100}},
map[string]interface{}{"group": []interface{}{3, 2}, "reduction": map[string]interface{}{"g2": 2, "id": 3, "num": 10, "g1": 3}},
map[string]interface{}{"reduction": map[string]interface{}{"num": 50, "g1": 4, "g2": 2, "id": 8}, "group": []interface{}{4, 2}},
})
}
func (s *RethinkSuite) TestAggregationContains(c *test.C) {
var response interface{}
query := Expr(arr).Contains(2)
res, err := query.Run(sess)
c.Assert(err, test.IsNil)
err = res.One(&response)
c.Assert(err, test.IsNil)
c.Assert(response, test.Equals, true)
}