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Fix index and slice expressions for query (#405)

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* Fix index and slice expressions for query

Support negative step for slice expressions
This commit is contained in:
x-hgg-x
2020-05-14 08:21:51 +02:00
committed by GitHub
parent 44aed552fd
commit a60e466129
8 changed files with 601 additions and 182 deletions
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query/query_test.go
+21 -20
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@@ -26,6 +26,14 @@ func assertArrayContainsInAnyOrder(t *testing.T, array []interface{}, objects ..
}
}
func checkQuery(t *testing.T, tree *toml.Tree, query string, objects ...interface{}) {
results, err := CompileAndExecute(query, tree)
if err != nil {
t.Fatal("unexpected error:", err)
}
assertArrayContainsInAnyOrder(t, results.Values(), objects...)
}
func TestQueryExample(t *testing.T) {
config, _ := toml.Load(`
[[book]]
@@ -37,16 +45,18 @@ func TestQueryExample(t *testing.T) {
[[book]]
title = "Neuromancer"
author = "William Gibson"
`)
authors, err := CompileAndExecute("$.book.author", config)
if err != nil {
t.Fatal("unexpected error:", err)
}
names := authors.Values()
if len(names) != 3 {
t.Fatalf("query should return 3 names but returned %d", len(names))
}
assertArrayContainsInAnyOrder(t, names, "Stephen King", "Ernest Hemmingway", "William Gibson")
`)
checkQuery(t, config, "$.book.author", "Stephen King", "Ernest Hemmingway", "William Gibson")
checkQuery(t, config, "$.book[0].author", "Stephen King")
checkQuery(t, config, "$.book[-1].author", "William Gibson")
checkQuery(t, config, "$.book[1:].author", "Ernest Hemmingway", "William Gibson")
checkQuery(t, config, "$.book[-1:].author", "William Gibson")
checkQuery(t, config, "$.book[::2].author", "William Gibson", "Stephen King")
checkQuery(t, config, "$.book[::-1].author", "William Gibson", "Ernest Hemmingway", "Stephen King")
checkQuery(t, config, "$.book[:].author", "Stephen King", "Ernest Hemmingway", "William Gibson")
checkQuery(t, config, "$.book[::].author", "Stephen King", "Ernest Hemmingway", "William Gibson")
}
func TestQueryReadmeExample(t *testing.T) {
@@ -56,16 +66,7 @@ user = "pelletier"
password = "mypassword"
`)
query, err := Compile("$..[user,password]")
if err != nil {
t.Fatal("unexpected error:", err)
}
results := query.Execute(config)
values := results.Values()
if len(values) != 2 {
t.Fatalf("query should return 2 values but returned %d", len(values))
}
assertArrayContainsInAnyOrder(t, values, "pelletier", "mypassword")
checkQuery(t, config, "$..[user,password]", "pelletier", "mypassword")
}
func TestQueryPathNotPresent(t *testing.T) {