// Copyright 2011 The Go Authors. All rights reserved.// Use of this source code is governed by a BSD-style// license that can be found in the LICENSE file. package parse import ( "flag" "fmt" "strings" "testing") var debug = flag.Bool("debug", false, "show the errors produced by the main tests") type numberTest struct { text string isInt bool isUint bool isFloat bool isComplex bool int64 uint64 float64 complex128} var numberTests = []numberTest{ // basics {"0", true, true, true, false, 0, 0, 0, 0}, {"-0", true, true, true, false, 0, 0, 0, 0}, // check that -0 is a uint. {"73", true, true, true, false, 73, 73, 73, 0}, {"073", true, true, true, false, 073, 073, 073, 0}, {"0x73", true, true, true, false, 0x73, 0x73, 0x73, 0}, {"-73", true, false, true, false, -73, 0, -73, 0}, {"+73", true, false, true, false, 73, 0, 73, 0}, {"100", true, true, true, false, 100, 100, 100, 0}, {"1e9", true, true, true, false, 1e9, 1e9, 1e9, 0}, {"-1e9", true, false, true, false, -1e9, 0, -1e9, 0}, {"-1.2", false, false, true, false, 0, 0, -1.2, 0}, {"1e19", false, true, true, false, 0, 1e19, 1e19, 0}, {"-1e19", false, false, true, false, 0, 0, -1e19, 0}, {"4i", false, false, false, true, 0, 0, 0, 4i}, {"-1.2+4.2i", false, false, false, true, 0, 0, 0, -1.2 + 4.2i}, {"073i", false, false, false, true, 0, 0, 0, 73i}, // not octal! // complex with 0 imaginary are float (and maybe integer) {"0i", true, true, true, true, 0, 0, 0, 0}, {"-1.2+0i", false, false, true, true, 0, 0, -1.2, -1.2}, {"-12+0i", true, false, true, true, -12, 0, -12, -12}, {"13+0i", true, true, true, true, 13, 13, 13, 13}, // funny bases {"0123", true, true, true, false, 0123, 0123, 0123, 0}, {"-0x0", true, true, true, false, 0, 0, 0, 0}, {"0xdeadbeef", true, true, true, false, 0xdeadbeef, 0xdeadbeef, 0xdeadbeef, 0}, // character constants {`'a'`, true, true, true, false, 'a', 'a', 'a', 0}, {`'\n'`, true, true, true, false, '\n', '\n', '\n', 0}, {`'\\'`, true, true, true, false, '\\', '\\', '\\', 0}, {`'\''`, true, true, true, false, '\'', '\'', '\'', 0}, {`'\xFF'`, true, true, true, false, 0xFF, 0xFF, 0xFF, 0}, {`'パ'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0}, {`'\u30d1'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0}, {`'\U000030d1'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0}, // some broken syntax {text: "+-2"}, {text: "0x123."}, {text: "1e."}, {text: "0xi."}, {text: "1+2."}, {text: "'x"}, {text: "'xx'"}, {text: "'433937734937734969526500969526500'"}, // Integer too large - issue 10634. // Issue 8622 - 0xe parsed as floating point. Very embarrassing. {"0xef", true, true, true, false, 0xef, 0xef, 0xef, 0},} func TestNumberParse(t *testing.T) { for _, test := range numberTests { // If fmt.Sscan thinks it's complex, it's complex. We can't trust the output // because imaginary comes out as a number. var c complex128 typ := itemNumber var tree *Tree if test.text[0] == '\'' { typ = itemCharConstant } else { _, err := fmt.Sscan(test.text, &c) if err == nil { typ = itemComplex } } n, err := tree.newNumber(0, test.text, typ) ok := test.isInt || test.isUint || test.isFloat || test.isComplex if ok && err != nil { t.Errorf("unexpected error for %q: %s", test.text, err) continue } if !ok && err == nil { t.Errorf("expected error for %q", test.text) continue } if !ok { if *debug { fmt.Printf("%s\n\t%s\n", test.text, err) } continue } if n.IsComplex != test.isComplex { t.Errorf("complex incorrect for %q; should be %t", test.text, test.isComplex) } if test.isInt { if !n.IsInt { t.Errorf("expected integer for %q", test.text) } if n.Int64 != test.int64 { t.Errorf("int64 for %q should be %d Is %d", test.text, test.int64, n.Int64) } } else if n.IsInt { t.Errorf("did not expect integer for %q", test.text) } if test.isUint { if !n.IsUint { t.Errorf("expected unsigned integer for %q", test.text) } if n.Uint64 != test.uint64 { t.Errorf("uint64 for %q should be %d Is %d", test.text, test.uint64, n.Uint64) } } else if n.IsUint { t.Errorf("did not expect unsigned integer for %q", test.text) } if test.isFloat { if !n.IsFloat { t.Errorf("expected float for %q", test.text) } if n.Float64 != test.float64 { t.Errorf("float64 for %q should be %g Is %g", test.text, test.float64, n.Float64) } } else if n.IsFloat { t.Errorf("did not expect float for %q", test.text) } if test.isComplex { if !n.IsComplex { t.Errorf("expected complex for %q", test.text) } if n.Complex128 != test.complex128 { t.Errorf("complex128 for %q should be %g Is %g", test.text, test.complex128, n.Complex128) } } else if n.IsComplex { t.Errorf("did not expect complex for %q", test.text) } }} type parseTest struct { name string input string ok bool result string // what the user would see in an error message.} const ( noError = true hasError = false) var parseTests = []parseTest{ {"empty", "", noError, ``}, {"comment", "{{/*\n\n\n*/}}", noError, ``}, {"spaces", " \t\n", noError, `" \t\n"`}, {"text", "some text", noError, `"some text"`}, {"emptyAction", "{{}}", hasError, `{{}}`}, {"field", "{{.X}}", noError, `{{.X}}`}, {"simple command", "{{printf}}", noError, `{{printf}}`}, {"$ invocation", "{{$}}", noError, "{{$}}"}, {"variable invocation", "{{with $x := 3}}{{$x 23}}{{end}}", noError, "{{with $x := 3}}{{$x 23}}{{end}}"}, {"variable with fields", "{{$.I}}", noError, "{{$.I}}"}, {"multi-word command", "{{printf `%d` 23}}", noError, "{{printf `%d` 23}}"}, {"pipeline", "{{.X|.Y}}", noError, `{{.X | .Y}}`}, {"pipeline with decl", "{{$x := .X|.Y}}", noError, `{{$x := .X | .Y}}`}, {"nested pipeline", "{{.X (.Y .Z) (.A | .B .C) (.E)}}", noError, `{{.X (.Y .Z) (.A | .B .C) (.E)}}`}, {"field applied to parentheses", "{{(.Y .Z).Field}}", noError, `{{(.Y .Z).Field}}`}, {"simple if", "{{if .X}}hello{{end}}", noError, `{{if .X}}"hello"{{end}}`}, {"if with else", "{{if .X}}true{{else}}false{{end}}", noError, `{{if .X}}"true"{{else}}"false"{{end}}`}, {"if with else if", "{{if .X}}true{{else if .Y}}false{{end}}", noError, `{{if .X}}"true"{{else}}{{if .Y}}"false"{{end}}{{end}}`}, {"if else chain", "+{{if .X}}X{{else if .Y}}Y{{else if .Z}}Z{{end}}+", noError, `"+"{{if .X}}"X"{{else}}{{if .Y}}"Y"{{else}}{{if .Z}}"Z"{{end}}{{end}}{{end}}"+"`}, {"simple range", "{{range .X}}hello{{end}}", noError, `{{range .X}}"hello"{{end}}`}, {"chained field range", "{{range .X.Y.Z}}hello{{end}}", noError, `{{range .X.Y.Z}}"hello"{{end}}`}, {"nested range", "{{range .X}}hello{{range .Y}}goodbye{{end}}{{end}}", noError, `{{range .X}}"hello"{{range .Y}}"goodbye"{{end}}{{end}}`}, {"range with else", "{{range .X}}true{{else}}false{{end}}", noError, `{{range .X}}"true"{{else}}"false"{{end}}`}, {"range over pipeline", "{{range .X|.M}}true{{else}}false{{end}}", noError, `{{range .X | .M}}"true"{{else}}"false"{{end}}`}, {"range []int", "{{range .SI}}{{.}}{{end}}", noError, `{{range .SI}}{{.}}{{end}}`}, {"range 1 var", "{{range $x := .SI}}{{.}}{{end}}", noError, `{{range $x := .SI}}{{.}}{{end}}`}, {"range 2 vars", "{{range $x, $y := .SI}}{{.}}{{end}}", noError, `{{range $x, $y := .SI}}{{.}}{{end}}`}, {"constants", "{{range .SI 1 -3.2i true false 'a' nil}}{{end}}", noError, `{{range .SI 1 -3.2i true false 'a' nil}}{{end}}`}, {"template", "{{template `x`}}", noError, `{{template "x"}}`}, {"template with arg", "{{template `x` .Y}}", noError, `{{template "x" .Y}}`}, {"with", "{{with .X}}hello{{end}}", noError, `{{with .X}}"hello"{{end}}`}, {"with with else", "{{with .X}}hello{{else}}goodbye{{end}}", noError, `{{with .X}}"hello"{{else}}"goodbye"{{end}}`}, // Trimming spaces. {"trim left", "x \r\n\t{{- 3}}", noError, `"x"{{3}}`}, {"trim right", "{{3 -}}\n\n\ty", noError, `{{3}}"y"`}, {"trim left and right", "x \r\n\t{{- 3 -}}\n\n\ty", noError, `"x"{{3}}"y"`}, {"comment trim left", "x \r\n\t{{- /* hi */}}", noError, `"x"`}, {"comment trim right", "{{/* hi */ -}}\n\n\ty", noError, `"y"`}, {"comment trim left and right", "x \r\n\t{{- /* */ -}}\n\n\ty", noError, `"x""y"`}, {"block definition", `{{block "foo" .}}hello{{end}}`, noError, `{{template "foo" .}}`}, // Errors. {"unclosed action", "hello{{range", hasError, ""}, {"unmatched end", "{{end}}", hasError, ""}, {"unmatched else", "{{else}}", hasError, ""}, {"unmatched else after if", "{{if .X}}hello{{end}}{{else}}", hasError, ""}, {"multiple else", "{{if .X}}1{{else}}2{{else}}3{{end}}", hasError, ""}, {"missing end", "hello{{range .x}}", hasError, ""}, {"missing end after else", "hello{{range .x}}{{else}}", hasError, ""}, {"undefined function", "hello{{undefined}}", hasError, ""}, {"undefined variable", "{{$x}}", hasError, ""}, {"variable undefined after end", "{{with $x := 4}}{{end}}{{$x}}", hasError, ""}, {"variable undefined in template", "{{template $v}}", hasError, ""}, {"declare with field", "{{with $x.Y := 4}}{{end}}", hasError, ""}, {"template with field ref", "{{template .X}}", hasError, ""}, {"template with var", "{{template $v}}", hasError, ""}, {"invalid punctuation", "{{printf 3, 4}}", hasError, ""}, {"multidecl outside range", "{{with $v, $u := 3}}{{end}}", hasError, ""}, {"too many decls in range", "{{range $u, $v, $w := 3}}{{end}}", hasError, ""}, {"dot applied to parentheses", "{{printf (printf .).}}", hasError, ""}, {"adjacent args", "{{printf 3`x`}}", hasError, ""}, {"adjacent args with .", "{{printf `x`.}}", hasError, ""}, {"extra end after if", "{{if .X}}a{{else if .Y}}b{{end}}{{end}}", hasError, ""}, // Equals (and other chars) do not assignments make (yet). {"bug0a", "{{$x := 0}}{{$x}}", noError, "{{$x := 0}}{{$x}}"}, {"bug0b", "{{$x = 1}}{{$x}}", hasError, ""}, {"bug0c", "{{$x ! 2}}{{$x}}", hasError, ""}, {"bug0d", "{{$x % 3}}{{$x}}", hasError, ""}, // Check the parse fails for := rather than comma. {"bug0e", "{{range $x := $y := 3}}{{end}}", hasError, ""}, // Another bug: variable read must ignore following punctuation. {"bug1a", "{{$x:=.}}{{$x!2}}", hasError, ""}, // ! is just illegal here. {"bug1b", "{{$x:=.}}{{$x+2}}", hasError, ""}, // $x+2 should not parse as ($x) (+2). {"bug1c", "{{$x:=.}}{{$x +2}}", noError, "{{$x := .}}{{$x +2}}"}, // It's OK with a space. // dot following a literal value {"dot after integer", "{{1.E}}", hasError, ""}, {"dot after float", "{{0.1.E}}", hasError, ""}, {"dot after boolean", "{{true.E}}", hasError, ""}, {"dot after char", "{{'a'.any}}", hasError, ""}, {"dot after string", `{{"hello".guys}}`, hasError, ""}, {"dot after dot", "{{..E}}", hasError, ""}, {"dot after nil", "{{nil.E}}", hasError, ""}, // Wrong pipeline {"wrong pipeline dot", "{{12|.}}", hasError, ""}, {"wrong pipeline number", "{{.|12|printf}}", hasError, ""}, {"wrong pipeline string", "{{.|printf|\"error\"}}", hasError, ""}, {"wrong pipeline char", "{{12|printf|'e'}}", hasError, ""}, {"wrong pipeline boolean", "{{.|true}}", hasError, ""}, {"wrong pipeline nil", "{{'c'|nil}}", hasError, ""}, {"empty pipeline", `{{printf "%d" ( ) }}`, hasError, ""}, // Missing pipeline in block {"block definition", `{{block "foo"}}hello{{end}}`, hasError, ""},} var builtins = map[string]interface{}{ "printf": fmt.Sprintf,} func testParse(doCopy bool, t *testing.T) { textFormat = "%q" defer func() { textFormat = "%s" }() for _, test := range parseTests { tmpl, err := New(test.name).Parse(test.input, "", "", make(map[string]*Tree), builtins) switch { case err == nil && !test.ok: t.Errorf("%q: expected error; got none", test.name) continue case err != nil && test.ok: t.Errorf("%q: unexpected error: %v", test.name, err) continue case err != nil && !test.ok: // expected error, got one if *debug { fmt.Printf("%s: %s\n\t%s\n", test.name, test.input, err) } continue } var result string if doCopy { result = tmpl.Root.Copy().String() } else { result = tmpl.Root.String() } if result != test.result { t.Errorf("%s=(%q): got\n\t%v\nexpected\n\t%v", test.name, test.input, result, test.result) } }} func TestParse(t *testing.T) { testParse(false, t)} // Same as TestParse, but we copy the node firstfunc TestParseCopy(t *testing.T) { testParse(true, t)} type isEmptyTest struct { name string input string empty bool} var isEmptyTests = []isEmptyTest{ {"empty", ``, true}, {"nonempty", `hello`, false}, {"spaces only", " \t\n \t\n", true}, {"definition", `{{define "x"}}something{{end}}`, true}, {"definitions and space", "{{define `x`}}something{{end}}\n\n{{define `y`}}something{{end}}\n\n", true}, {"definitions and text", "{{define `x`}}something{{end}}\nx\n{{define `y`}}something{{end}}\ny\n", false}, {"definition and action", "{{define `x`}}something{{end}}{{if 3}}foo{{end}}", false},} func TestIsEmpty(t *testing.T) { if !IsEmptyTree(nil) { t.Errorf("nil tree is not empty") } for _, test := range isEmptyTests { tree, err := New("root").Parse(test.input, "", "", make(map[string]*Tree), nil) if err != nil { t.Errorf("%q: unexpected error: %v", test.name, err) continue } if empty := IsEmptyTree(tree.Root); empty != test.empty { t.Errorf("%q: expected %t got %t", test.name, test.empty, empty) } }} func TestErrorContextWithTreeCopy(t *testing.T) { tree, err := New("root").Parse("{{if true}}{{end}}", "", "", make(map[string]*Tree), nil) if err != nil { t.Fatalf("unexpected tree parse failure: %v", err) } treeCopy := tree.Copy() wantLocation, wantContext := tree.ErrorContext(tree.Root.Nodes[0]) gotLocation, gotContext := treeCopy.ErrorContext(treeCopy.Root.Nodes[0]) if wantLocation != gotLocation { t.Errorf("wrong error location want %q got %q", wantLocation, gotLocation) } if wantContext != gotContext { t.Errorf("wrong error location want %q got %q", wantContext, gotContext) }} // All failures, and the result is a string that must appear in the error message.var errorTests = []parseTest{ // Check line numbers are accurate. {"unclosed1", "line1\n{{", hasError, `unclosed1:2: unexpected unclosed action in command`}, {"unclosed2", "line1\n{{define `x`}}line2\n{{", hasError, `unclosed2:3: unexpected unclosed action in command`}, // Specific errors. {"function", "{{foo}}", hasError, `function "foo" not defined`}, {"comment", "{{/*}}", hasError, `unclosed comment`}, {"lparen", "{{.X (1 2 3}}", hasError, `unclosed left paren`}, {"rparen", "{{.X 1 2 3)}}", hasError, `unexpected ")"`}, {"space", "{{`x`3}}", hasError, `in operand`}, {"idchar", "{{a#}}", hasError, `'#'`}, {"charconst", "{{'a}}", hasError, `unterminated character constant`}, {"stringconst", `{{"a}}`, hasError, `unterminated quoted string`}, {"rawstringconst", "{{`a}}", hasError, `unterminated raw quoted string`}, {"number", "{{0xi}}", hasError, `number syntax`}, {"multidefine", "{{define `a`}}a{{end}}{{define `a`}}b{{end}}", hasError, `multiple definition of template`}, {"eof", "{{range .X}}", hasError, `unexpected EOF`}, {"variable", // Declare $x so it's defined, to avoid that error, and then check we don't parse a declaration. "{{$x := 23}}{{with $x.y := 3}}{{$x 23}}{{end}}", hasError, `unexpected ":="`}, {"multidecl", "{{$a,$b,$c := 23}}", hasError, `too many declarations`}, {"undefvar", "{{$a}}", hasError, `undefined variable`}, {"wrongdot", "{{true.any}}", hasError, `unexpected . after term`}, {"wrongpipeline", "{{12|false}}", hasError, `non executable command in pipeline`}, {"emptypipeline", `{{ ( ) }}`, hasError, `missing value for parenthesized pipeline`},} func TestErrors(t *testing.T) { for _, test := range errorTests { _, err := New(test.name).Parse(test.input, "", "", make(map[string]*Tree)) if err == nil { t.Errorf("%q: expected error", test.name) continue } if !strings.Contains(err.Error(), test.result) { t.Errorf("%q: error %q does not contain %q", test.name, err, test.result) } }} func TestBlock(t *testing.T) { const ( input = `a{{block "inner" .}}bar{{.}}baz{{end}}b` outer = `a{{template "inner" .}}b` inner = `bar{{.}}baz` ) treeSet := make(map[string]*Tree) tmpl, err := New("outer").Parse(input, "", "", treeSet, nil) if err != nil { t.Fatal(err) } if g, w := tmpl.Root.String(), outer; g != w { t.Errorf("outer template = %q, want %q", g, w) } inTmpl := treeSet["inner"] if inTmpl == nil { t.Fatal("block did not define template") } if g, w := inTmpl.Root.String(), inner; g != w { t.Errorf("inner template = %q, want %q", g, w) }}
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package parse
import (
"flag"
"fmt"
"strings"
"testing"
)
var debug = flag.Bool("debug", false, "show the errors produced by the main tests")
type numberTest struct {
text string
isInt bool
isUint bool
isFloat bool
isComplex bool
int64
uint64
float64
complex128
}
var numberTests = []numberTest{
// basics
{"0", true, true, true, false, 0, 0, 0, 0},
{"-0", true, true, true, false, 0, 0, 0, 0}, // check that -0 is a uint.
{"73", true, true, true, false, 73, 73, 73, 0},
{"073", true, true, true, false, 073, 073, 073, 0},
{"0x73", true, true, true, false, 0x73, 0x73, 0x73, 0},
{"-73", true, false, true, false, -73, 0, -73, 0},
{"+73", true, false, true, false, 73, 0, 73, 0},
{"100", true, true, true, false, 100, 100, 100, 0},
{"1e9", true, true, true, false, 1e9, 1e9, 1e9, 0},
{"-1e9", true, false, true, false, -1e9, 0, -1e9, 0},
{"-1.2", false, false, true, false, 0, 0, -1.2, 0},
{"1e19", false, true, true, false, 0, 1e19, 1e19, 0},
{"-1e19", false, false, true, false, 0, 0, -1e19, 0},
{"4i", false, false, false, true, 0, 0, 0, 4i},
{"-1.2+4.2i", false, false, false, true, 0, 0, 0, -1.2 + 4.2i},
{"073i", false, false, false, true, 0, 0, 0, 73i}, // not octal!
// complex with 0 imaginary are float (and maybe integer)
{"0i", true, true, true, true, 0, 0, 0, 0},
{"-1.2+0i", false, false, true, true, 0, 0, -1.2, -1.2},
{"-12+0i", true, false, true, true, -12, 0, -12, -12},
{"13+0i", true, true, true, true, 13, 13, 13, 13},
// funny bases
{"0123", true, true, true, false, 0123, 0123, 0123, 0},
{"-0x0", true, true, true, false, 0, 0, 0, 0},
{"0xdeadbeef", true, true, true, false, 0xdeadbeef, 0xdeadbeef, 0xdeadbeef, 0},
// character constants
{`'a'`, true, true, true, false, 'a', 'a', 'a', 0},
{`'\n'`, true, true, true, false, '\n', '\n', '\n', 0},
{`'\\'`, true, true, true, false, '\\', '\\', '\\', 0},
{`'\''`, true, true, true, false, '\'', '\'', '\'', 0},
{`'\xFF'`, true, true, true, false, 0xFF, 0xFF, 0xFF, 0},
{`'パ'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0},
{`'\u30d1'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0},
{`'\U000030d1'`, true, true, true, false, 0x30d1, 0x30d1, 0x30d1, 0},
// some broken syntax
{text: "+-2"},
{text: "0x123."},
{text: "1e."},
{text: "0xi."},
{text: "1+2."},
{text: "'x"},
{text: "'xx'"},
{text: "'433937734937734969526500969526500'"}, // Integer too large - issue 10634.
// Issue 8622 - 0xe parsed as floating point. Very embarrassing.
{"0xef", true, true, true, false, 0xef, 0xef, 0xef, 0},
}
func TestNumberParse(t *testing.T) {
for _, test := range numberTests {
// If fmt.Sscan thinks it's complex, it's complex. We can't trust the output
// because imaginary comes out as a number.
var c complex128
typ := itemNumber
var tree *Tree
if test.text[0] == '\'' {
typ = itemCharConstant
} else {
_, err := fmt.Sscan(test.text, &c)
if err == nil {
typ = itemComplex
}
}
n, err := tree.newNumber(0, test.text, typ)
ok := test.isInt || test.isUint || test.isFloat || test.isComplex
if ok && err != nil {
t.Errorf("unexpected error for %q: %s", test.text, err)
continue
}
if !ok && err == nil {
t.Errorf("expected error for %q", test.text)
continue
}
if !ok {
if *debug {
fmt.Printf("%s\n\t%s\n", test.text, err)
}
continue
}
if n.IsComplex != test.isComplex {
t.Errorf("complex incorrect for %q; should be %t", test.text, test.isComplex)
}
if test.isInt {
if !n.IsInt {
t.Errorf("expected integer for %q", test.text)
}
if n.Int64 != test.int64 {
t.Errorf("int64 for %q should be %d Is %d", test.text, test.int64, n.Int64)
}
} else if n.IsInt {
t.Errorf("did not expect integer for %q", test.text)
}
if test.isUint {
if !n.IsUint {
t.Errorf("expected unsigned integer for %q", test.text)
}
if n.Uint64 != test.uint64 {
t.Errorf("uint64 for %q should be %d Is %d", test.text, test.uint64, n.Uint64)
}
} else if n.IsUint {
t.Errorf("did not expect unsigned integer for %q", test.text)
}
if test.isFloat {
if !n.IsFloat {
t.Errorf("expected float for %q", test.text)
}
if n.Float64 != test.float64 {
t.Errorf("float64 for %q should be %g Is %g", test.text, test.float64, n.Float64)
}
} else if n.IsFloat {
t.Errorf("did not expect float for %q", test.text)
}
if test.isComplex {
if !n.IsComplex {
t.Errorf("expected complex for %q", test.text)
}
if n.Complex128 != test.complex128 {
t.Errorf("complex128 for %q should be %g Is %g", test.text, test.complex128, n.Complex128)
}
} else if n.IsComplex {
t.Errorf("did not expect complex for %q", test.text)
}
}
}
type parseTest struct {
name string
input string
ok bool
result string // what the user would see in an error message.
}
const (
noError = true
hasError = false
)
var parseTests = []parseTest{
{"empty", "", noError,
``},
{"comment", "{{/*\n\n\n*/}}", noError,
``},
{"spaces", " \t\n", noError,
`" \t\n"`},
{"text", "some text", noError,
`"some text"`},
{"emptyAction", "{{}}", hasError,
`{{}}`},
{"field", "{{.X}}", noError,
`{{.X}}`},
{"simple command", "{{printf}}", noError,
`{{printf}}`},
{"$ invocation", "{{$}}", noError,
"{{$}}"},
{"variable invocation", "{{with $x := 3}}{{$x 23}}{{end}}", noError,
"{{with $x := 3}}{{$x 23}}{{end}}"},
{"variable with fields", "{{$.I}}", noError,
"{{$.I}}"},
{"multi-word command", "{{printf `%d` 23}}", noError,
"{{printf `%d` 23}}"},
{"pipeline", "{{.X|.Y}}", noError,
`{{.X | .Y}}`},
{"pipeline with decl", "{{$x := .X|.Y}}", noError,
`{{$x := .X | .Y}}`},
{"nested pipeline", "{{.X (.Y .Z) (.A | .B .C) (.E)}}", noError,
`{{.X (.Y .Z) (.A | .B .C) (.E)}}`},
{"field applied to parentheses", "{{(.Y .Z).Field}}", noError,
`{{(.Y .Z).Field}}`},
{"simple if", "{{if .X}}hello{{end}}", noError,
`{{if .X}}"hello"{{end}}`},
{"if with else", "{{if .X}}true{{else}}false{{end}}", noError,
`{{if .X}}"true"{{else}}"false"{{end}}`},
{"if with else if", "{{if .X}}true{{else if .Y}}false{{end}}", noError,
`{{if .X}}"true"{{else}}{{if .Y}}"false"{{end}}{{end}}`},
{"if else chain", "+{{if .X}}X{{else if .Y}}Y{{else if .Z}}Z{{end}}+", noError,
`"+"{{if .X}}"X"{{else}}{{if .Y}}"Y"{{else}}{{if .Z}}"Z"{{end}}{{end}}{{end}}"+"`},
{"simple range", "{{range .X}}hello{{end}}", noError,
`{{range .X}}"hello"{{end}}`},
{"chained field range", "{{range .X.Y.Z}}hello{{end}}", noError,
`{{range .X.Y.Z}}"hello"{{end}}`},
{"nested range", "{{range .X}}hello{{range .Y}}goodbye{{end}}{{end}}", noError,
`{{range .X}}"hello"{{range .Y}}"goodbye"{{end}}{{end}}`},
{"range with else", "{{range .X}}true{{else}}false{{end}}", noError,
`{{range .X}}"true"{{else}}"false"{{end}}`},
{"range over pipeline", "{{range .X|.M}}true{{else}}false{{end}}", noError,
`{{range .X | .M}}"true"{{else}}"false"{{end}}`},
{"range []int", "{{range .SI}}{{.}}{{end}}", noError,
`{{range .SI}}{{.}}{{end}}`},
{"range 1 var", "{{range $x := .SI}}{{.}}{{end}}", noError,
`{{range $x := .SI}}{{.}}{{end}}`},
{"range 2 vars", "{{range $x, $y := .SI}}{{.}}{{end}}", noError,
`{{range $x, $y := .SI}}{{.}}{{end}}`},
{"constants", "{{range .SI 1 -3.2i true false 'a' nil}}{{end}}", noError,
`{{range .SI 1 -3.2i true false 'a' nil}}{{end}}`},
{"template", "{{template `x`}}", noError,
`{{template "x"}}`},
{"template with arg", "{{template `x` .Y}}", noError,
`{{template "x" .Y}}`},
{"with", "{{with .X}}hello{{end}}", noError,
`{{with .X}}"hello"{{end}}`},
{"with with else", "{{with .X}}hello{{else}}goodbye{{end}}", noError,
`{{with .X}}"hello"{{else}}"goodbye"{{end}}`},
// Trimming spaces.
{"trim left", "x \r\n\t{{- 3}}", noError, `"x"{{3}}`},
{"trim right", "{{3 -}}\n\n\ty", noError, `{{3}}"y"`},
{"trim left and right", "x \r\n\t{{- 3 -}}\n\n\ty", noError, `"x"{{3}}"y"`},
{"comment trim left", "x \r\n\t{{- /* hi */}}", noError, `"x"`},
{"comment trim right", "{{/* hi */ -}}\n\n\ty", noError, `"y"`},
{"comment trim left and right", "x \r\n\t{{- /* */ -}}\n\n\ty", noError, `"x""y"`},
{"block definition", `{{block "foo" .}}hello{{end}}`, noError,
`{{template "foo" .}}`},
// Errors.
{"unclosed action", "hello{{range", hasError, ""},
{"unmatched end", "{{end}}", hasError, ""},
{"unmatched else", "{{else}}", hasError, ""},
{"unmatched else after if", "{{if .X}}hello{{end}}{{else}}", hasError, ""},
{"multiple else", "{{if .X}}1{{else}}2{{else}}3{{end}}", hasError, ""},
{"missing end", "hello{{range .x}}", hasError, ""},
{"missing end after else", "hello{{range .x}}{{else}}", hasError, ""},
{"undefined function", "hello{{undefined}}", hasError, ""},
{"undefined variable", "{{$x}}", hasError, ""},
{"variable undefined after end", "{{with $x := 4}}{{end}}{{$x}}", hasError, ""},
{"variable undefined in template", "{{template $v}}", hasError, ""},
{"declare with field", "{{with $x.Y := 4}}{{end}}", hasError, ""},
{"template with field ref", "{{template .X}}", hasError, ""},
{"template with var", "{{template $v}}", hasError, ""},
{"invalid punctuation", "{{printf 3, 4}}", hasError, ""},
{"multidecl outside range", "{{with $v, $u := 3}}{{end}}", hasError, ""},
{"too many decls in range", "{{range $u, $v, $w := 3}}{{end}}", hasError, ""},
{"dot applied to parentheses", "{{printf (printf .).}}", hasError, ""},
{"adjacent args", "{{printf 3`x`}}", hasError, ""},
{"adjacent args with .", "{{printf `x`.}}", hasError, ""},
{"extra end after if", "{{if .X}}a{{else if .Y}}b{{end}}{{end}}", hasError, ""},
// Equals (and other chars) do not assignments make (yet).
{"bug0a", "{{$x := 0}}{{$x}}", noError, "{{$x := 0}}{{$x}}"},
{"bug0b", "{{$x = 1}}{{$x}}", hasError, ""},
{"bug0c", "{{$x ! 2}}{{$x}}", hasError, ""},
{"bug0d", "{{$x % 3}}{{$x}}", hasError, ""},
// Check the parse fails for := rather than comma.
{"bug0e", "{{range $x := $y := 3}}{{end}}", hasError, ""},
// Another bug: variable read must ignore following punctuation.
{"bug1a", "{{$x:=.}}{{$x!2}}", hasError, ""}, // ! is just illegal here.
{"bug1b", "{{$x:=.}}{{$x+2}}", hasError, ""}, // $x+2 should not parse as ($x) (+2).
{"bug1c", "{{$x:=.}}{{$x +2}}", noError, "{{$x := .}}{{$x +2}}"}, // It's OK with a space.
// dot following a literal value
{"dot after integer", "{{1.E}}", hasError, ""},
{"dot after float", "{{0.1.E}}", hasError, ""},
{"dot after boolean", "{{true.E}}", hasError, ""},
{"dot after char", "{{'a'.any}}", hasError, ""},
{"dot after string", `{{"hello".guys}}`, hasError, ""},
{"dot after dot", "{{..E}}", hasError, ""},
{"dot after nil", "{{nil.E}}", hasError, ""},
// Wrong pipeline
{"wrong pipeline dot", "{{12|.}}", hasError, ""},
{"wrong pipeline number", "{{.|12|printf}}", hasError, ""},
{"wrong pipeline string", "{{.|printf|\"error\"}}", hasError, ""},
{"wrong pipeline char", "{{12|printf|'e'}}", hasError, ""},
{"wrong pipeline boolean", "{{.|true}}", hasError, ""},
{"wrong pipeline nil", "{{'c'|nil}}", hasError, ""},
{"empty pipeline", `{{printf "%d" ( ) }}`, hasError, ""},
// Missing pipeline in block
{"block definition", `{{block "foo"}}hello{{end}}`, hasError, ""},
}
var builtins = map[string]interface{}{
"printf": fmt.Sprintf,
}
func testParse(doCopy bool, t *testing.T) {
textFormat = "%q"
defer func() { textFormat = "%s" }()
for _, test := range parseTests {
tmpl, err := New(test.name).Parse(test.input, "", "", make(map[string]*Tree), builtins)
switch {
case err == nil && !test.ok:
t.Errorf("%q: expected error; got none", test.name)
continue
case err != nil && test.ok:
t.Errorf("%q: unexpected error: %v", test.name, err)
continue
case err != nil && !test.ok:
// expected error, got one
if *debug {
fmt.Printf("%s: %s\n\t%s\n", test.name, test.input, err)
}
continue
}
var result string
if doCopy {
result = tmpl.Root.Copy().String()
} else {
result = tmpl.Root.String()
}
if result != test.result {
t.Errorf("%s=(%q): got\n\t%v\nexpected\n\t%v", test.name, test.input, result, test.result)
}
}
}
func TestParse(t *testing.T) {
testParse(false, t)
}
// Same as TestParse, but we copy the node first
func TestParseCopy(t *testing.T) {
testParse(true, t)
}
type isEmptyTest struct {
name string
input string
empty bool
}
var isEmptyTests = []isEmptyTest{
{"empty", ``, true},
{"nonempty", `hello`, false},
{"spaces only", " \t\n \t\n", true},
{"definition", `{{define "x"}}something{{end}}`, true},
{"definitions and space", "{{define `x`}}something{{end}}\n\n{{define `y`}}something{{end}}\n\n", true},
{"definitions and text", "{{define `x`}}something{{end}}\nx\n{{define `y`}}something{{end}}\ny\n", false},
{"definition and action", "{{define `x`}}something{{end}}{{if 3}}foo{{end}}", false},
}
func TestIsEmpty(t *testing.T) {
if !IsEmptyTree(nil) {
t.Errorf("nil tree is not empty")
}
for _, test := range isEmptyTests {
tree, err := New("root").Parse(test.input, "", "", make(map[string]*Tree), nil)
if err != nil {
t.Errorf("%q: unexpected error: %v", test.name, err)
continue
}
if empty := IsEmptyTree(tree.Root); empty != test.empty {
t.Errorf("%q: expected %t got %t", test.name, test.empty, empty)
}
}
}
func TestErrorContextWithTreeCopy(t *testing.T) {
tree, err := New("root").Parse("{{if true}}{{end}}", "", "", make(map[string]*Tree), nil)
if err != nil {
t.Fatalf("unexpected tree parse failure: %v", err)
}
treeCopy := tree.Copy()
wantLocation, wantContext := tree.ErrorContext(tree.Root.Nodes[0])
gotLocation, gotContext := treeCopy.ErrorContext(treeCopy.Root.Nodes[0])
if wantLocation != gotLocation {
t.Errorf("wrong error location want %q got %q", wantLocation, gotLocation)
}
if wantContext != gotContext {
t.Errorf("wrong error location want %q got %q", wantContext, gotContext)
}
}
// All failures, and the result is a string that must appear in the error message.
var errorTests = []parseTest{
// Check line numbers are accurate.
{"unclosed1",
"line1\n{{",
hasError, `unclosed1:2: unexpected unclosed action in command`},
{"unclosed2",
"line1\n{{define `x`}}line2\n{{",
hasError, `unclosed2:3: unexpected unclosed action in command`},
// Specific errors.
{"function",
"{{foo}}",
hasError, `function "foo" not defined`},
{"comment",
"{{/*}}",
hasError, `unclosed comment`},
{"lparen",
"{{.X (1 2 3}}",
hasError, `unclosed left paren`},
{"rparen",
"{{.X 1 2 3)}}",
hasError, `unexpected ")"`},
{"space",
"{{`x`3}}",
hasError, `in operand`},
{"idchar",
"{{a#}}",
hasError, `'#'`},
{"charconst",
"{{'a}}",
hasError, `unterminated character constant`},
{"stringconst",
`{{"a}}`,
hasError, `unterminated quoted string`},
{"rawstringconst",
"{{`a}}",
hasError, `unterminated raw quoted string`},
{"number",
"{{0xi}}",
hasError, `number syntax`},
{"multidefine",
"{{define `a`}}a{{end}}{{define `a`}}b{{end}}",
hasError, `multiple definition of template`},
{"eof",
"{{range .X}}",
hasError, `unexpected EOF`},
{"variable",
// Declare $x so it's defined, to avoid that error, and then check we don't parse a declaration.
"{{$x := 23}}{{with $x.y := 3}}{{$x 23}}{{end}}",
hasError, `unexpected ":="`},
{"multidecl",
"{{$a,$b,$c := 23}}",
hasError, `too many declarations`},
{"undefvar",
"{{$a}}",
hasError, `undefined variable`},
{"wrongdot",
"{{true.any}}",
hasError, `unexpected . after term`},
{"wrongpipeline",
"{{12|false}}",
hasError, `non executable command in pipeline`},
{"emptypipeline",
`{{ ( ) }}`,
hasError, `missing value for parenthesized pipeline`},
}
func TestErrors(t *testing.T) {
for _, test := range errorTests {
_, err := New(test.name).Parse(test.input, "", "", make(map[string]*Tree))
if err == nil {
t.Errorf("%q: expected error", test.name)
continue
}
if !strings.Contains(err.Error(), test.result) {
t.Errorf("%q: error %q does not contain %q", test.name, err, test.result)
}
}
}
func TestBlock(t *testing.T) {
const (
input = `a{{block "inner" .}}bar{{.}}baz{{end}}b`
outer = `a{{template "inner" .}}b`
inner = `bar{{.}}baz`
)
treeSet := make(map[string]*Tree)
tmpl, err := New("outer").Parse(input, "", "", treeSet, nil)
if err != nil {
t.Fatal(err)
}
if g, w := tmpl.Root.String(), outer; g != w {
t.Errorf("outer template = %q, want %q", g, w)
}
inTmpl := treeSet["inner"]
if inTmpl == nil {
t.Fatal("block did not define template")
}
if g, w := inTmpl.Root.String(), inner; g != w {
t.Errorf("inner template = %q, want %q", g, w)
}
}