Files
docker-cli/components/engine/builder/parser/json_test.go
Tianon Gravi 3bf489de75 Adjust builder to validate that JSON in Dockerfiles are arrays of strings and nothing else to match how we describe them to people (and what all our existing tests already assumed)
This also adds more tests to help verify this, including unicode and nonprintable characters (hence the earlier commit switching to strconv.Quote).

As a bonus, this fixes a subtle bug where [] was turned into [""] and then turned back into [] (and thus [""] was impossible to actually round-trip correctly in a Dockerfile).

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>
Upstream-commit: 05c2d2db9a95266217a639e2109be6fc6482a716
Component: engine
2015-01-05 14:31:05 -07:00

56 lines
1.5 KiB
Go

package parser
import (
"testing"
)
var invalidJSONArraysOfStrings = []string{
`["a",42,"b"]`,
`["a",123.456,"b"]`,
`["a",{},"b"]`,
`["a",{"c": "d"},"b"]`,
`["a",["c"],"b"]`,
`["a",true,"b"]`,
`["a",false,"b"]`,
`["a",null,"b"]`,
}
var validJSONArraysOfStrings = map[string][]string{
`[]`: {},
`[""]`: {""},
`["a"]`: {"a"},
`["a","b"]`: {"a", "b"},
`[ "a", "b" ]`: {"a", "b"},
`[ "a", "b" ]`: {"a", "b"},
` [ "a", "b" ] `: {"a", "b"},
`["abc 123", "♥", "☃", "\" \\ \/ \b \f \n \r \t \u0000"]`: {"abc 123", "♥", "☃", "\" \\ / \b \f \n \r \t \u0000"},
}
func TestJSONArraysOfStrings(t *testing.T) {
for json, expected := range validJSONArraysOfStrings {
if node, _, err := parseJSON(json); err != nil {
t.Fatalf("%q should be a valid JSON array of strings, but wasn't! (err: %q)", json, err)
} else {
i := 0
for node != nil {
if i >= len(expected) {
t.Fatalf("expected result is shorter than parsed result (%d vs %d+) in %q", len(expected), i+1, json)
}
if node.Value != expected[i] {
t.Fatalf("expected %q (not %q) in %q at pos %d", expected[i], node.Value, json, i)
}
node = node.Next
i++
}
if i != len(expected) {
t.Fatalf("expected result is longer than parsed result (%d vs %d) in %q", len(expected), i+1, json)
}
}
}
for _, json := range invalidJSONArraysOfStrings {
if _, _, err := parseJSON(json); err != errDockerfileNotStringArray {
t.Fatalf("%q should be an invalid JSON array of strings, but wasn't!", json)
}
}
}