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df3e017f6c
opentofu/config/interpolate_funcs_test.go
Jan Schumann df3e017f6c fix #7106
2016-06-15 13:25:16 +02:00

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package config
import (
"fmt"
"io/ioutil"
"os"
"reflect"
"strings"
"testing"
"github.com/hashicorp/hil"
"github.com/hashicorp/hil/ast"
)
func TestInterpolateFuncCompact(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
// empty string within array
{
`${compact(split(",", "a,,b"))}`,
[]interface{}{"a", "b"},
false,
},
// empty string at the end of array
{
`${compact(split(",", "a,b,"))}`,
[]interface{}{"a", "b"},
false,
},
// single empty string
{
`${compact(split(",", ""))}`,
[]interface{}{},
false,
},
},
})
}
func TestInterpolateFuncCidrHost(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${cidrhost("192.168.1.0/24", 5)}`,
"192.168.1.5",
false,
},
{
`${cidrhost("192.168.1.0/30", 255)}`,
nil,
true, // 255 doesn't fit in two bits
},
{
`${cidrhost("not-a-cidr", 6)}`,
nil,
true, // not a valid CIDR mask
},
{
`${cidrhost("10.256.0.0/8", 6)}`,
nil,
true, // can't have an octet >255
},
},
})
}
func TestInterpolateFuncCidrNetmask(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${cidrnetmask("192.168.1.0/24")}`,
"255.255.255.0",
false,
},
{
`${cidrnetmask("192.168.1.0/32")}`,
"255.255.255.255",
false,
},
{
`${cidrnetmask("0.0.0.0/0")}`,
"0.0.0.0",
false,
},
{
// This doesn't really make sense for IPv6 networks
// but it ought to do something sensible anyway.
`${cidrnetmask("1::/64")}`,
"ffff:ffff:ffff:ffff::",
false,
},
{
`${cidrnetmask("not-a-cidr")}`,
nil,
true, // not a valid CIDR mask
},
{
`${cidrnetmask("10.256.0.0/8")}`,
nil,
true, // can't have an octet >255
},
},
})
}
func TestInterpolateFuncCidrSubnet(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${cidrsubnet("192.168.2.0/20", 4, 6)}`,
"192.168.6.0/24",
false,
},
{
`${cidrsubnet("fe80::/48", 16, 6)}`,
"fe80:0:0:6::/64",
false,
},
{
// IPv4 address encoded in IPv6 syntax gets normalized
`${cidrsubnet("::ffff:192.168.0.0/112", 8, 6)}`,
"192.168.6.0/24",
false,
},
{
`${cidrsubnet("192.168.0.0/30", 4, 6)}`,
nil,
true, // not enough bits left
},
{
`${cidrsubnet("192.168.0.0/16", 2, 16)}`,
nil,
true, // can't encode 16 in 2 bits
},
{
`${cidrsubnet("not-a-cidr", 4, 6)}`,
nil,
true, // not a valid CIDR mask
},
{
`${cidrsubnet("10.256.0.0/8", 4, 6)}`,
nil,
true, // can't have an octet >255
},
},
})
}
func TestInterpolateFuncCoalesce(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${coalesce("first", "second", "third")}`,
"first",
false,
},
{
`${coalesce("", "second", "third")}`,
"second",
false,
},
{
`${coalesce("", "", "")}`,
"",
false,
},
{
`${coalesce("foo")}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncConcat(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
// String + list
{
`${concat("a", split(",", "b,c"))}`,
[]interface{}{"a", "b", "c"},
false,
},
// List + string
{
`${concat(split(",", "a,b"), "c")}`,
[]interface{}{"a", "b", "c"},
false,
},
// Single list
{
`${concat(split(",", ",foo,"))}`,
[]interface{}{"", "foo", ""},
false,
},
{
`${concat(split(",", "a,b,c"))}`,
[]interface{}{"a", "b", "c"},
false,
},
// Two lists
{
`${concat(split(",", "a,b,c"), split(",", "d,e"))}`,
[]interface{}{"a", "b", "c", "d", "e"},
false,
},
// Two lists with different separators
{
`${concat(split(",", "a,b,c"), split(" ", "d e"))}`,
[]interface{}{"a", "b", "c", "d", "e"},
false,
},
// More lists
{
`${concat(split(",", "a,b"), split(",", "c,d"), split(",", "e,f"), split(",", "0,1"))}`,
[]interface{}{"a", "b", "c", "d", "e", "f", "0", "1"},
false,
},
},
})
}
// TODO: This test is split out and calls a private function
// because there's no good way to get a list of maps into the unit
// tests due to GH-7142 - once lists of maps can be expressed properly as
// literals this unit test can be wrapped back into the suite above.
//
// Reproduces crash reported in GH-7030.
func TestInterpolationFuncConcatListOfMaps(t *testing.T) {
listOfMapsOne := ast.Variable{
Type: ast.TypeList,
Value: []ast.Variable{
{
Type: ast.TypeMap,
Value: map[string]interface{}{"one": "foo"},
},
},
}
listOfMapsTwo := ast.Variable{
Type: ast.TypeList,
Value: []ast.Variable{
{
Type: ast.TypeMap,
Value: map[string]interface{}{"two": "bar"},
},
},
}
args := []interface{}{listOfMapsOne.Value, listOfMapsTwo.Value}
_, err := interpolationFuncConcat().Callback(args)
if err == nil || !strings.Contains(err.Error(), "concat() does not support lists of type map") {
t.Fatalf("Expected err, got: %v", err)
}
}
func TestInterpolateFuncUniq(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
// 3 duplicates
{
`${uniq(concat(split(",", "user1,user2,user3"), split(",", "user1,user2,user3")))}`,
[]interface{}{"user1", "user2", "user3"},
false,
},
// 1 duplicate
{
`${uniq(concat(split(",", "user1,user2,user3"), split(",", "user1,user4")))}`,
[]interface{}{"user1", "user2", "user3", "user4"},
false,
},
// too many args
{
`${uniq(concat(split(",", "user1,user2,user3"), split(",", "user1,user4")), "foo")}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncFile(t *testing.T) {
tf, err := ioutil.TempFile("", "tf")
if err != nil {
t.Fatalf("err: %s", err)
}
path := tf.Name()
tf.Write([]byte("foo"))
tf.Close()
defer os.Remove(path)
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
fmt.Sprintf(`${file("%s")}`, path),
"foo",
false,
},
// Invalid path
{
`${file("/i/dont/exist")}`,
nil,
true,
},
// Too many args
{
`${file("foo", "bar")}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncFormat(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${format("hello")}`,
"hello",
false,
},
{
`${format("hello %s", "world")}`,
"hello world",
false,
},
{
`${format("hello %d", 42)}`,
"hello 42",
false,
},
{
`${format("hello %05d", 42)}`,
"hello 00042",
false,
},
{
`${format("hello %05d", 12345)}`,
"hello 12345",
false,
},
},
})
}
func TestInterpolateFuncFormatList(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
// formatlist requires at least one list
{
`${formatlist("hello")}`,
nil,
true,
},
{
`${formatlist("hello %s", "world")}`,
nil,
true,
},
// formatlist applies to each list element in turn
{
`${formatlist("<%s>", split(",", "A,B"))}`,
[]interface{}{"<A>", "<B>"},
false,
},
// formatlist repeats scalar elements
{
`${join(", ", formatlist("%s=%s", "x", split(",", "A,B,C")))}`,
"x=A, x=B, x=C",
false,
},
// Multiple lists are walked in parallel
{
`${join(", ", formatlist("%s=%s", split(",", "A,B,C"), split(",", "1,2,3")))}`,
"A=1, B=2, C=3",
false,
},
// Mismatched list lengths generate an error
{
`${formatlist("%s=%2s", split(",", "A,B,C,D"), split(",", "1,2,3"))}`,
nil,
true,
},
// Works with lists of length 1 [GH-2240]
{
`${formatlist("%s.id", split(",", "demo-rest-elb"))}`,
[]interface{}{"demo-rest-elb.id"},
false,
},
},
})
}
func TestInterpolateFuncIndex(t *testing.T) {
testFunction(t, testFunctionConfig{
Vars: map[string]ast.Variable{
"var.list1": interfaceToVariableSwallowError([]string{"notfoo", "stillnotfoo", "bar"}),
"var.list2": interfaceToVariableSwallowError([]string{"foo"}),
"var.list3": interfaceToVariableSwallowError([]string{"foo", "spam", "bar", "eggs"}),
},
Cases: []testFunctionCase{
{
`${index("test", "")}`,
nil,
true,
},
{
`${index(var.list1, "foo")}`,
nil,
true,
},
{
`${index(var.list2, "foo")}`,
"0",
false,
},
{
`${index(var.list3, "bar")}`,
"2",
false,
},
},
})
}
func TestInterpolateFuncJoin(t *testing.T) {
testFunction(t, testFunctionConfig{
Vars: map[string]ast.Variable{
"var.a_list": interfaceToVariableSwallowError([]string{"foo"}),
"var.a_longer_list": interfaceToVariableSwallowError([]string{"foo", "bar", "baz"}),
},
Cases: []testFunctionCase{
{
`${join(",")}`,
nil,
true,
},
{
`${join(",", var.a_list)}`,
"foo",
false,
},
{
`${join(".", var.a_longer_list)}`,
"foo.bar.baz",
false,
},
},
})
}
func TestInterpolateFuncJSONEncode(t *testing.T) {
testFunction(t, testFunctionConfig{
Vars: map[string]ast.Variable{
"easy": ast.Variable{
Value: "test",
Type: ast.TypeString,
},
"hard": ast.Variable{
Value: " foo \\ \n \t \" bar ",
Type: ast.TypeString,
},
"list": interfaceToVariableSwallowError([]string{"foo", "bar\tbaz"}),
// XXX can't use InterfaceToVariable as it converts empty slice into empty
// map.
"emptylist": ast.Variable{
Value: []ast.Variable{},
Type: ast.TypeList,
},
"map": interfaceToVariableSwallowError(map[string]string{
"foo": "bar",
"ba \n z": "q\\x",
}),
"emptymap": interfaceToVariableSwallowError(map[string]string{}),
// Not yet supported (but it would be nice)
"nestedlist": interfaceToVariableSwallowError([][]string{{"foo"}}),
"nestedmap": interfaceToVariableSwallowError(map[string][]string{"foo": {"bar"}}),
},
Cases: []testFunctionCase{
{
`${jsonencode("test")}`,
`"test"`,
false,
},
{
`${jsonencode(easy)}`,
`"test"`,
false,
},
{
`${jsonencode(hard)}`,
`" foo \\ \n \t \" bar "`,
false,
},
{
`${jsonencode("")}`,
`""`,
false,
},
{
`${jsonencode()}`,
nil,
true,
},
{
`${jsonencode(list)}`,
`["foo","bar\tbaz"]`,
false,
},
{
`${jsonencode(emptylist)}`,
`[]`,
false,
},
{
`${jsonencode(map)}`,
`{"ba \n z":"q\\x","foo":"bar"}`,
false,
},
{
`${jsonencode(emptymap)}`,
`{}`,
false,
},
{
`${jsonencode(nestedlist)}`,
nil,
true,
},
{
`${jsonencode(nestedmap)}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncReplace(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
// Regular search and replace
{
`${replace("hello", "hel", "bel")}`,
"bello",
false,
},
// Search string doesn't match
{
`${replace("hello", "nope", "bel")}`,
"hello",
false,
},
// Regular expression
{
`${replace("hello", "/l/", "L")}`,
"heLLo",
false,
},
{
`${replace("helo", "/(l)/", "$1$1")}`,
"hello",
false,
},
// Bad regexp
{
`${replace("helo", "/(l/", "$1$1")}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncLength(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
// Raw strings
{
`${length("")}`,
"0",
false,
},
{
`${length("a")}`,
"1",
false,
},
{
`${length(" ")}`,
"1",
false,
},
{
`${length(" a ,")}`,
"4",
false,
},
{
`${length("aaa")}`,
"3",
false,
},
// Lists
{
`${length(split(",", "a"))}`,
"1",
false,
},
{
`${length(split(",", "foo,"))}`,
"2",
false,
},
{
`${length(split(",", ",foo,"))}`,
"3",
false,
},
{
`${length(split(",", "foo,bar"))}`,
"2",
false,
},
{
`${length(split(".", "one.two.three.four.five"))}`,
"5",
false,
},
// Want length 0 if we split an empty string then compact
{
`${length(compact(split(",", "")))}`,
"0",
false,
},
},
})
}
func TestInterpolateFuncSignum(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${signum()}`,
nil,
true,
},
{
`${signum("")}`,
nil,
true,
},
{
`${signum(0)}`,
"0",
false,
},
{
`${signum(15)}`,
"1",
false,
},
{
`${signum(-29)}`,
"-1",
false,
},
},
})
}
func TestInterpolateFuncSort(t *testing.T) {
testFunction(t, testFunctionConfig{
Vars: map[string]ast.Variable{
"var.strings": ast.Variable{
Type: ast.TypeList,
Value: []ast.Variable{
{Type: ast.TypeString, Value: "c"},
{Type: ast.TypeString, Value: "a"},
{Type: ast.TypeString, Value: "b"},
},
},
"var.notstrings": ast.Variable{
Type: ast.TypeList,
Value: []ast.Variable{
{Type: ast.TypeList, Value: []ast.Variable{}},
{Type: ast.TypeString, Value: "b"},
},
},
},
Cases: []testFunctionCase{
{
`${sort(var.strings)}`,
[]interface{}{"a", "b", "c"},
false,
},
{
`${sort(var.notstrings)}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncSplit(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${split(",")}`,
nil,
true,
},
{
`${split(",", "")}`,
[]interface{}{""},
false,
},
{
`${split(",", "foo")}`,
[]interface{}{"foo"},
false,
},
{
`${split(",", ",,,")}`,
[]interface{}{"", "", "", ""},
false,
},
{
`${split(",", "foo,")}`,
[]interface{}{"foo", ""},
false,
},
{
`${split(",", ",foo,")}`,
[]interface{}{"", "foo", ""},
false,
},
{
`${split(".", "foo.bar.baz")}`,
[]interface{}{"foo", "bar", "baz"},
false,
},
},
})
}
func TestInterpolateFuncLookup(t *testing.T) {
testFunction(t, testFunctionConfig{
Vars: map[string]ast.Variable{
"var.foo": ast.Variable{
Type: ast.TypeMap,
Value: map[string]ast.Variable{
"bar": ast.Variable{
Type: ast.TypeString,
Value: "baz",
},
},
},
},
Cases: []testFunctionCase{
{
`${lookup(var.foo, "bar")}`,
"baz",
false,
},
// Invalid key
{
`${lookup(var.foo, "baz")}`,
nil,
true,
},
// Supplied default with valid key
{
`${lookup(var.foo, "bar", "")}`,
"baz",
false,
},
// Supplied default with invalid key
{
`${lookup(var.foo, "zip", "")}`,
"",
false,
},
// Too many args
{
`${lookup(var.foo, "bar", "", "abc")}`,
nil,
true,
},
// Non-empty default
{
`${lookup(var.foo, "zap", "xyz")}`,
"xyz",
false,
},
},
})
}
func TestInterpolateFuncKeys(t *testing.T) {
testFunction(t, testFunctionConfig{
Vars: map[string]ast.Variable{
"var.foo": ast.Variable{
Type: ast.TypeMap,
Value: map[string]ast.Variable{
"bar": ast.Variable{
Value: "baz",
Type: ast.TypeString,
},
"qux": ast.Variable{
Value: "quack",
Type: ast.TypeString,
},
},
},
"var.str": ast.Variable{
Value: "astring",
Type: ast.TypeString,
},
},
Cases: []testFunctionCase{
{
`${keys(var.foo)}`,
[]interface{}{"bar", "qux"},
false,
},
// Invalid key
{
`${keys(var.not)}`,
nil,
true,
},
// Too many args
{
`${keys(var.foo, "bar")}`,
nil,
true,
},
// Not a map
{
`${keys(var.str)}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncValues(t *testing.T) {
testFunction(t, testFunctionConfig{
Vars: map[string]ast.Variable{
"var.foo": ast.Variable{
Type: ast.TypeMap,
Value: map[string]ast.Variable{
"bar": ast.Variable{
Value: "quack",
Type: ast.TypeString,
},
"qux": ast.Variable{
Value: "baz",
Type: ast.TypeString,
},
},
},
"var.str": ast.Variable{
Value: "astring",
Type: ast.TypeString,
},
},
Cases: []testFunctionCase{
{
`${values(var.foo)}`,
[]interface{}{"quack", "baz"},
false,
},
// Invalid key
{
`${values(var.not)}`,
nil,
true,
},
// Too many args
{
`${values(var.foo, "bar")}`,
nil,
true,
},
// Not a map
{
`${values(var.str)}`,
nil,
true,
},
},
})
}
func interfaceToVariableSwallowError(input interface{}) ast.Variable {
variable, _ := hil.InterfaceToVariable(input)
return variable
}
func TestInterpolateFuncElement(t *testing.T) {
testFunction(t, testFunctionConfig{
Vars: map[string]ast.Variable{
"var.a_list": interfaceToVariableSwallowError([]string{"foo", "baz"}),
"var.a_short_list": interfaceToVariableSwallowError([]string{"foo"}),
},
Cases: []testFunctionCase{
{
`${element(var.a_list, "1")}`,
"baz",
false,
},
{
`${element(var.a_short_list, "0")}`,
"foo",
false,
},
// Invalid index should wrap vs. out-of-bounds
{
`${element(var.a_list, "2")}`,
"foo",
false,
},
// Negative number should fail
{
`${element(var.a_short_list, "-1")}`,
nil,
true,
},
// Too many args
{
`${element(var.a_list, "0", "2")}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncBase64Encode(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
// Regular base64 encoding
{
`${base64encode("abc123!?$*&()'-=@~")}`,
"YWJjMTIzIT8kKiYoKSctPUB+",
false,
},
},
})
}
func TestInterpolateFuncBase64Decode(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
// Regular base64 decoding
{
`${base64decode("YWJjMTIzIT8kKiYoKSctPUB+")}`,
"abc123!?$*&()'-=@~",
false,
},
// Invalid base64 data decoding
{
`${base64decode("this-is-an-invalid-base64-data")}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncLower(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${lower("HELLO")}`,
"hello",
false,
},
{
`${lower("")}`,
"",
false,
},
{
`${lower()}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncUpper(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${upper("hello")}`,
"HELLO",
false,
},
{
`${upper("")}`,
"",
false,
},
{
`${upper()}`,
nil,
true,
},
},
})
}
func TestInterpolateFuncSha1(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${sha1("test")}`,
"a94a8fe5ccb19ba61c4c0873d391e987982fbbd3",
false,
},
},
})
}
func TestInterpolateFuncSha256(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{ // hexadecimal representation of sha256 sum
`${sha256("test")}`,
"9f86d081884c7d659a2feaa0c55ad015a3bf4f1b2b0b822cd15d6c15b0f00a08",
false,
},
},
})
}
func TestInterpolateFuncTrimSpace(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${trimspace(" test ")}`,
"test",
false,
},
},
})
}
func TestInterpolateFuncBase64Sha256(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${base64sha256("test")}`,
"n4bQgYhMfWWaL+qgxVrQFaO/TxsrC4Is0V1sFbDwCgg=",
false,
},
{ // This will differ because we're base64-encoding hex represantiation, not raw bytes
`${base64encode(sha256("test"))}`,
"OWY4NmQwODE4ODRjN2Q2NTlhMmZlYWEwYzU1YWQwMTVhM2JmNGYxYjJiMGI4MjJjZDE1ZDZjMTViMGYwMGEwOA==",
false,
},
},
})
}
func TestInterpolateFuncMd5(t *testing.T) {
testFunction(t, testFunctionConfig{
Cases: []testFunctionCase{
{
`${md5("tada")}`,
"ce47d07243bb6eaf5e1322c81baf9bbf",
false,
},
{ // Confirm that we're not trimming any whitespaces
`${md5(" tada ")}`,
"aadf191a583e53062de2d02c008141c4",
false,
},
{ // We accept empty string too
`${md5("")}`,
"d41d8cd98f00b204e9800998ecf8427e",
false,
},
},
})
}
func TestInterpolateFuncUUID(t *testing.T) {
results := make(map[string]bool)
for i := 0; i < 100; i++ {
ast, err := hil.Parse("${uuid()}")
if err != nil {
t.Fatalf("err: %s", err)
}
result, err := hil.Eval(ast, langEvalConfig(nil))
if err != nil {
t.Fatalf("err: %s", err)
}
if results[result.Value.(string)] {
t.Fatalf("Got unexpected duplicate uuid: %s", result.Value)
}
results[result.Value.(string)] = true
}
}
type testFunctionConfig struct {
Cases []testFunctionCase
Vars map[string]ast.Variable
}
type testFunctionCase struct {
Input string
Result interface{}
Error bool
}
func testFunction(t *testing.T, config testFunctionConfig) {
for i, tc := range config.Cases {
ast, err := hil.Parse(tc.Input)
if err != nil {
t.Fatalf("Case #%d: input: %#v\nerr: %s", i, tc.Input, err)
}
result, err := hil.Eval(ast, langEvalConfig(config.Vars))
if err != nil != tc.Error {
t.Fatalf("Case #%d:\ninput: %#v\nerr: %s", i, tc.Input, err)
}
if !reflect.DeepEqual(result.Value, tc.Result) {
t.Fatalf("%d: bad output for input: %s\n\nOutput: %#v\nExpected: %#v",
i, tc.Input, result.Value, tc.Result)
}
}
}
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