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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,45 @@ | ||
| // Copyright 2023 zGraph Authors. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package tests_test | ||
|
|
||
| import ( | ||
| "testing" | ||
|
|
||
| _ "github.com/vescale/zgraph" | ||
| ) | ||
|
|
||
| // An example in https://pgql-lang.org/spec/1.5/#edge-patterns. | ||
| var initStudentNetwork = []string{ | ||
| `CREATE GRAPH student_network`, | ||
| `USE student_network`, | ||
| `CREATE LABEL Person`, | ||
| `CREATE LABEL University`, | ||
| `CREATE LABEL knows`, | ||
| `CREATE LABEL studentOf`, | ||
| `INSERT VERTEX x LABELS (Person) PROPERTIES (x.name = 'Kathrine', x.dob = DATE '1994-01-15')`, | ||
| `INSERT VERTEX x LABELS (Person) PROPERTIES (x.name = 'Riya', x.dob = DATE '1995-03-20')`, | ||
| `INSERT VERTEX x LABELS (Person) PROPERTIES (x.name = 'Lee', x.dob = DATE '1996-01-20')`, | ||
| `INSERT VERTEX x LABELS (University) PROPERTIES (x.name = 'UC Berkeley')`, | ||
| `INSERT EDGE e BETWEEN x AND y LABELS ( knows ) FROM MATCH (x), MATCH (y) WHERE x.name = 'Kathrine' AND y.name = 'Lee'`, | ||
| `INSERT EDGE e BETWEEN x AND y LABELS ( knows ) FROM MATCH (x), MATCH (y) WHERE x.name = 'Kathrine' AND y.name = 'Riya'`, | ||
| `INSERT EDGE e BETWEEN x AND y LABELS ( knows ) FROM MATCH (x), MATCH (y) WHERE x.name = 'Lee' AND y.name = 'Kathrine'`, | ||
| `INSERT EDGE e BETWEEN x AND y LABELS ( studentOf ) FROM MATCH (x), MATCH (y) WHERE x.name = 'Kathrine' AND y.name = 'UC Berkeley'`, | ||
| `INSERT EDGE e BETWEEN x AND y LABELS ( studentOf ) FROM MATCH (x), MATCH (y) WHERE x.name = 'Riya' AND y.name = 'UC Berkeley'`, | ||
| `INSERT EDGE e BETWEEN x AND y LABELS ( studentOf ) FROM MATCH (x), MATCH (y) WHERE x.name = 'Lee' AND y.name = 'UC Berkeley'`, | ||
| } | ||
|
|
||
| func TestStudentNetwork(t *testing.T) { | ||
| runDataDrivenTest(t, "testdata/student_network", initStudentNetwork) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,24 @@ | ||
| simple | ||
| SELECT a.name AS a, b.name AS b FROM MATCH (a:Person) -[e:knows]-> (b:Person); | ||
| ---- | ||
| a,b | ||
| Kathrine,Lee | ||
| Kathrine,Riya | ||
| Lee,Kathrine | ||
|
|
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| more-complex | ||
| SELECT p2.name AS friend, u.name AS university | ||
| FROM MATCH (u:University) <-[anon1:studentOf]- (p1:Person) -[anon2:knows]-> (p2:Person) -[anon3:studentOf]-> (u) | ||
| WHERE p1.name = 'Lee'; | ||
| ---- | ||
| friend,university | ||
| Kathrine,UC Berkeley | ||
|
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| binding-an-element-multiple-times | ||
| SELECT p1.name AS p1, p2.name AS p2, p3.name AS p3 | ||
| FROM MATCH (p1:Person) -[anon1:knows]-> (p2:Person) -[anon2:knows]-> (p3:Person) | ||
| WHERE p1.name = 'Lee'; | ||
| ---- | ||
| p1,p2,p3 | ||
| Lee,Kathrine,Lee | ||
| Lee,Kathrine,Riya |
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| @@ -0,0 +1,99 @@ | ||
| // Copyright 2023 zGraph Authors. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package tests_test | ||
|
|
||
| import ( | ||
| "database/sql" | ||
| "sort" | ||
| "strings" | ||
| "testing" | ||
|
|
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| "github.com/cockroachdb/datadriven" | ||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
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| func runDataDrivenTest(t *testing.T, path string, initSQLs []string) { | ||
| t.Helper() | ||
| datadriven.RunTest(t, path, func(t *testing.T, d *datadriven.TestData) string { | ||
| db, err := initDB(t.TempDir(), initSQLs) | ||
| require.NoError(t, err) | ||
| defer db.Close() | ||
|
|
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| rows, err := db.Query(d.Input) | ||
| require.NoError(t, err) | ||
| defer rows.Close() | ||
|
|
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| result, err := combineRows(rows) | ||
| require.NoError(t, err) | ||
| // Sort the result to make it deterministic. | ||
| // TODO: It's not a good idea to sort the result, we should make query result deterministic instead. | ||
| lines := strings.Split(strings.TrimSpace(result), "\n") | ||
| sort.Strings(lines[1:]) | ||
| result = strings.Join(lines, "\n") | ||
| return result | ||
| }) | ||
| } | ||
|
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| func initDB(path string, sqls []string) (*sql.DB, error) { | ||
| db, err := sql.Open("zgraph", path) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| for _, q := range sqls { | ||
| _, err = db.Exec(q) | ||
| if err != nil { | ||
| _ = db.Close() | ||
| return nil, err | ||
| } | ||
| } | ||
| return db, nil | ||
| } | ||
|
|
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| func combineRows(rows *sql.Rows) (string, error) { | ||
| cols, err := rows.Columns() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
|
|
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| var sb strings.Builder | ||
| for i, col := range cols { | ||
| sb.WriteString(col) | ||
| if i+1 == len(cols) { | ||
| sb.WriteByte('\n') | ||
| } else { | ||
| sb.WriteString(",") | ||
| } | ||
| } | ||
|
|
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| dest := make([]any, len(cols)) | ||
| for i := 0; i < len(cols); i++ { | ||
| var anyStr sql.NullString | ||
| dest[i] = &anyStr | ||
| } | ||
| for rows.Next() { | ||
| if err := rows.Scan(dest...); err != nil { | ||
| return "", err | ||
| } | ||
| for i := 0; i < len(cols); i++ { | ||
| sb.WriteString(dest[i].(*sql.NullString).String) | ||
| if i+1 == len(cols) { | ||
| sb.WriteByte('\n') | ||
| } else { | ||
| sb.WriteString(",") | ||
| } | ||
| } | ||
| } | ||
| return sb.String(), nil | ||
| } |