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-rw-r--r--src/pkg/text/template/exec_test.go989
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diff --git a/src/pkg/text/template/exec_test.go b/src/pkg/text/template/exec_test.go
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index 868f2cb94..000000000
--- a/src/pkg/text/template/exec_test.go
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@@ -1,989 +0,0 @@
-// 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 template
-
-import (
- "bytes"
- "errors"
- "flag"
- "fmt"
- "reflect"
- "strings"
- "testing"
-)
-
-var debug = flag.Bool("debug", false, "show the errors produced by the tests")
-
-// T has lots of interesting pieces to use to test execution.
-type T struct {
- // Basics
- True bool
- I int
- U16 uint16
- X string
- FloatZero float64
- ComplexZero complex128
- // Nested structs.
- U *U
- // Struct with String method.
- V0 V
- V1, V2 *V
- // Struct with Error method.
- W0 W
- W1, W2 *W
- // Slices
- SI []int
- SIEmpty []int
- SB []bool
- // Maps
- MSI map[string]int
- MSIone map[string]int // one element, for deterministic output
- MSIEmpty map[string]int
- MXI map[interface{}]int
- MII map[int]int
- SMSI []map[string]int
- // Empty interfaces; used to see if we can dig inside one.
- Empty0 interface{} // nil
- Empty1 interface{}
- Empty2 interface{}
- Empty3 interface{}
- Empty4 interface{}
- // Non-empty interface.
- NonEmptyInterface I
- // Stringer.
- Str fmt.Stringer
- Err error
- // Pointers
- PI *int
- PS *string
- PSI *[]int
- NIL *int
- // Function (not method)
- BinaryFunc func(string, string) string
- VariadicFunc func(...string) string
- VariadicFuncInt func(int, ...string) string
- NilOKFunc func(*int) bool
- ErrFunc func() (string, error)
- // Template to test evaluation of templates.
- Tmpl *Template
- // Unexported field; cannot be accessed by template.
- unexported int
-}
-
-type U struct {
- V string
-}
-
-type V struct {
- j int
-}
-
-func (v *V) String() string {
- if v == nil {
- return "nilV"
- }
- return fmt.Sprintf("<%d>", v.j)
-}
-
-type W struct {
- k int
-}
-
-func (w *W) Error() string {
- if w == nil {
- return "nilW"
- }
- return fmt.Sprintf("[%d]", w.k)
-}
-
-var tVal = &T{
- True: true,
- I: 17,
- U16: 16,
- X: "x",
- U: &U{"v"},
- V0: V{6666},
- V1: &V{7777}, // leave V2 as nil
- W0: W{888},
- W1: &W{999}, // leave W2 as nil
- SI: []int{3, 4, 5},
- SB: []bool{true, false},
- MSI: map[string]int{"one": 1, "two": 2, "three": 3},
- MSIone: map[string]int{"one": 1},
- MXI: map[interface{}]int{"one": 1},
- MII: map[int]int{1: 1},
- SMSI: []map[string]int{
- {"one": 1, "two": 2},
- {"eleven": 11, "twelve": 12},
- },
- Empty1: 3,
- Empty2: "empty2",
- Empty3: []int{7, 8},
- Empty4: &U{"UinEmpty"},
- NonEmptyInterface: new(T),
- Str: bytes.NewBuffer([]byte("foozle")),
- Err: errors.New("erroozle"),
- PI: newInt(23),
- PS: newString("a string"),
- PSI: newIntSlice(21, 22, 23),
- BinaryFunc: func(a, b string) string { return fmt.Sprintf("[%s=%s]", a, b) },
- VariadicFunc: func(s ...string) string { return fmt.Sprint("<", strings.Join(s, "+"), ">") },
- VariadicFuncInt: func(a int, s ...string) string { return fmt.Sprint(a, "=<", strings.Join(s, "+"), ">") },
- NilOKFunc: func(s *int) bool { return s == nil },
- ErrFunc: func() (string, error) { return "bla", nil },
- Tmpl: Must(New("x").Parse("test template")), // "x" is the value of .X
-}
-
-// A non-empty interface.
-type I interface {
- Method0() string
-}
-
-var iVal I = tVal
-
-// Helpers for creation.
-func newInt(n int) *int {
- return &n
-}
-
-func newString(s string) *string {
- return &s
-}
-
-func newIntSlice(n ...int) *[]int {
- p := new([]int)
- *p = make([]int, len(n))
- copy(*p, n)
- return p
-}
-
-// Simple methods with and without arguments.
-func (t *T) Method0() string {
- return "M0"
-}
-
-func (t *T) Method1(a int) int {
- return a
-}
-
-func (t *T) Method2(a uint16, b string) string {
- return fmt.Sprintf("Method2: %d %s", a, b)
-}
-
-func (t *T) Method3(v interface{}) string {
- return fmt.Sprintf("Method3: %v", v)
-}
-
-func (t *T) MAdd(a int, b []int) []int {
- v := make([]int, len(b))
- for i, x := range b {
- v[i] = x + a
- }
- return v
-}
-
-var myError = errors.New("my error")
-
-// MyError returns a value and an error according to its argument.
-func (t *T) MyError(error bool) (bool, error) {
- if error {
- return true, myError
- }
- return false, nil
-}
-
-// A few methods to test chaining.
-func (t *T) GetU() *U {
- return t.U
-}
-
-func (u *U) TrueFalse(b bool) string {
- if b {
- return "true"
- }
- return ""
-}
-
-func typeOf(arg interface{}) string {
- return fmt.Sprintf("%T", arg)
-}
-
-type execTest struct {
- name string
- input string
- output string
- data interface{}
- ok bool
-}
-
-// bigInt and bigUint are hex string representing numbers either side
-// of the max int boundary.
-// We do it this way so the test doesn't depend on ints being 32 bits.
-var (
- bigInt = fmt.Sprintf("0x%x", int(1<<uint(reflect.TypeOf(0).Bits()-1)-1))
- bigUint = fmt.Sprintf("0x%x", uint(1<<uint(reflect.TypeOf(0).Bits()-1)))
-)
-
-var execTests = []execTest{
- // Trivial cases.
- {"empty", "", "", nil, true},
- {"text", "some text", "some text", nil, true},
- {"nil action", "{{nil}}", "", nil, false},
-
- // Ideal constants.
- {"ideal int", "{{typeOf 3}}", "int", 0, true},
- {"ideal float", "{{typeOf 1.0}}", "float64", 0, true},
- {"ideal exp float", "{{typeOf 1e1}}", "float64", 0, true},
- {"ideal complex", "{{typeOf 1i}}", "complex128", 0, true},
- {"ideal int", "{{typeOf " + bigInt + "}}", "int", 0, true},
- {"ideal too big", "{{typeOf " + bigUint + "}}", "", 0, false},
- {"ideal nil without type", "{{nil}}", "", 0, false},
-
- // Fields of structs.
- {".X", "-{{.X}}-", "-x-", tVal, true},
- {".U.V", "-{{.U.V}}-", "-v-", tVal, true},
- {".unexported", "{{.unexported}}", "", tVal, false},
-
- // Fields on maps.
- {"map .one", "{{.MSI.one}}", "1", tVal, true},
- {"map .two", "{{.MSI.two}}", "2", tVal, true},
- {"map .NO", "{{.MSI.NO}}", "<no value>", tVal, true},
- {"map .one interface", "{{.MXI.one}}", "1", tVal, true},
- {"map .WRONG args", "{{.MSI.one 1}}", "", tVal, false},
- {"map .WRONG type", "{{.MII.one}}", "", tVal, false},
-
- // Dots of all kinds to test basic evaluation.
- {"dot int", "<{{.}}>", "<13>", 13, true},
- {"dot uint", "<{{.}}>", "<14>", uint(14), true},
- {"dot float", "<{{.}}>", "<15.1>", 15.1, true},
- {"dot bool", "<{{.}}>", "<true>", true, true},
- {"dot complex", "<{{.}}>", "<(16.2-17i)>", 16.2 - 17i, true},
- {"dot string", "<{{.}}>", "<hello>", "hello", true},
- {"dot slice", "<{{.}}>", "<[-1 -2 -3]>", []int{-1, -2, -3}, true},
- {"dot map", "<{{.}}>", "<map[two:22]>", map[string]int{"two": 22}, true},
- {"dot struct", "<{{.}}>", "<{7 seven}>", struct {
- a int
- b string
- }{7, "seven"}, true},
-
- // Variables.
- {"$ int", "{{$}}", "123", 123, true},
- {"$.I", "{{$.I}}", "17", tVal, true},
- {"$.U.V", "{{$.U.V}}", "v", tVal, true},
- {"declare in action", "{{$x := $.U.V}}{{$x}}", "v", tVal, true},
-
- // Type with String method.
- {"V{6666}.String()", "-{{.V0}}-", "-<6666>-", tVal, true},
- {"&V{7777}.String()", "-{{.V1}}-", "-<7777>-", tVal, true},
- {"(*V)(nil).String()", "-{{.V2}}-", "-nilV-", tVal, true},
-
- // Type with Error method.
- {"W{888}.Error()", "-{{.W0}}-", "-[888]-", tVal, true},
- {"&W{999}.Error()", "-{{.W1}}-", "-[999]-", tVal, true},
- {"(*W)(nil).Error()", "-{{.W2}}-", "-nilW-", tVal, true},
-
- // Pointers.
- {"*int", "{{.PI}}", "23", tVal, true},
- {"*string", "{{.PS}}", "a string", tVal, true},
- {"*[]int", "{{.PSI}}", "[21 22 23]", tVal, true},
- {"*[]int[1]", "{{index .PSI 1}}", "22", tVal, true},
- {"NIL", "{{.NIL}}", "<nil>", tVal, true},
-
- // Empty interfaces holding values.
- {"empty nil", "{{.Empty0}}", "<no value>", tVal, true},
- {"empty with int", "{{.Empty1}}", "3", tVal, true},
- {"empty with string", "{{.Empty2}}", "empty2", tVal, true},
- {"empty with slice", "{{.Empty3}}", "[7 8]", tVal, true},
- {"empty with struct", "{{.Empty4}}", "{UinEmpty}", tVal, true},
- {"empty with struct, field", "{{.Empty4.V}}", "UinEmpty", tVal, true},
-
- // Method calls.
- {".Method0", "-{{.Method0}}-", "-M0-", tVal, true},
- {".Method1(1234)", "-{{.Method1 1234}}-", "-1234-", tVal, true},
- {".Method1(.I)", "-{{.Method1 .I}}-", "-17-", tVal, true},
- {".Method2(3, .X)", "-{{.Method2 3 .X}}-", "-Method2: 3 x-", tVal, true},
- {".Method2(.U16, `str`)", "-{{.Method2 .U16 `str`}}-", "-Method2: 16 str-", tVal, true},
- {".Method2(.U16, $x)", "{{if $x := .X}}-{{.Method2 .U16 $x}}{{end}}-", "-Method2: 16 x-", tVal, true},
- {".Method3(nil constant)", "-{{.Method3 nil}}-", "-Method3: <nil>-", tVal, true},
- {".Method3(nil value)", "-{{.Method3 .MXI.unset}}-", "-Method3: <nil>-", tVal, true},
- {"method on var", "{{if $x := .}}-{{$x.Method2 .U16 $x.X}}{{end}}-", "-Method2: 16 x-", tVal, true},
- {"method on chained var",
- "{{range .MSIone}}{{if $.U.TrueFalse $.True}}{{$.U.TrueFalse $.True}}{{else}}WRONG{{end}}{{end}}",
- "true", tVal, true},
- {"chained method",
- "{{range .MSIone}}{{if $.GetU.TrueFalse $.True}}{{$.U.TrueFalse $.True}}{{else}}WRONG{{end}}{{end}}",
- "true", tVal, true},
- {"chained method on variable",
- "{{with $x := .}}{{with .SI}}{{$.GetU.TrueFalse $.True}}{{end}}{{end}}",
- "true", tVal, true},
- {".NilOKFunc not nil", "{{call .NilOKFunc .PI}}", "false", tVal, true},
- {".NilOKFunc nil", "{{call .NilOKFunc nil}}", "true", tVal, true},
-
- // Function call builtin.
- {".BinaryFunc", "{{call .BinaryFunc `1` `2`}}", "[1=2]", tVal, true},
- {".VariadicFunc0", "{{call .VariadicFunc}}", "<>", tVal, true},
- {".VariadicFunc2", "{{call .VariadicFunc `he` `llo`}}", "<he+llo>", tVal, true},
- {".VariadicFuncInt", "{{call .VariadicFuncInt 33 `he` `llo`}}", "33=<he+llo>", tVal, true},
- {"if .BinaryFunc call", "{{ if .BinaryFunc}}{{call .BinaryFunc `1` `2`}}{{end}}", "[1=2]", tVal, true},
- {"if not .BinaryFunc call", "{{ if not .BinaryFunc}}{{call .BinaryFunc `1` `2`}}{{else}}No{{end}}", "No", tVal, true},
- {"Interface Call", `{{stringer .S}}`, "foozle", map[string]interface{}{"S": bytes.NewBufferString("foozle")}, true},
- {".ErrFunc", "{{call .ErrFunc}}", "bla", tVal, true},
-
- // Erroneous function calls (check args).
- {".BinaryFuncTooFew", "{{call .BinaryFunc `1`}}", "", tVal, false},
- {".BinaryFuncTooMany", "{{call .BinaryFunc `1` `2` `3`}}", "", tVal, false},
- {".BinaryFuncBad0", "{{call .BinaryFunc 1 3}}", "", tVal, false},
- {".BinaryFuncBad1", "{{call .BinaryFunc `1` 3}}", "", tVal, false},
- {".VariadicFuncBad0", "{{call .VariadicFunc 3}}", "", tVal, false},
- {".VariadicFuncIntBad0", "{{call .VariadicFuncInt}}", "", tVal, false},
- {".VariadicFuncIntBad`", "{{call .VariadicFuncInt `x`}}", "", tVal, false},
- {".VariadicFuncNilBad", "{{call .VariadicFunc nil}}", "", tVal, false},
-
- // Pipelines.
- {"pipeline", "-{{.Method0 | .Method2 .U16}}-", "-Method2: 16 M0-", tVal, true},
- {"pipeline func", "-{{call .VariadicFunc `llo` | call .VariadicFunc `he` }}-", "-<he+<llo>>-", tVal, true},
-
- // Parenthesized expressions
- {"parens in pipeline", "{{printf `%d %d %d` (1) (2 | add 3) (add 4 (add 5 6))}}", "1 5 15", tVal, true},
-
- // Parenthesized expressions with field accesses
- {"parens: $ in paren", "{{($).X}}", "x", tVal, true},
- {"parens: $.GetU in paren", "{{($.GetU).V}}", "v", tVal, true},
- {"parens: $ in paren in pipe", "{{($ | echo).X}}", "x", tVal, true},
- {"parens: spaces and args", `{{(makemap "up" "down" "left" "right").left}}`, "right", tVal, true},
-
- // If.
- {"if true", "{{if true}}TRUE{{end}}", "TRUE", tVal, true},
- {"if false", "{{if false}}TRUE{{else}}FALSE{{end}}", "FALSE", tVal, true},
- {"if nil", "{{if nil}}TRUE{{end}}", "", tVal, false},
- {"if 1", "{{if 1}}NON-ZERO{{else}}ZERO{{end}}", "NON-ZERO", tVal, true},
- {"if 0", "{{if 0}}NON-ZERO{{else}}ZERO{{end}}", "ZERO", tVal, true},
- {"if 1.5", "{{if 1.5}}NON-ZERO{{else}}ZERO{{end}}", "NON-ZERO", tVal, true},
- {"if 0.0", "{{if .FloatZero}}NON-ZERO{{else}}ZERO{{end}}", "ZERO", tVal, true},
- {"if 1.5i", "{{if 1.5i}}NON-ZERO{{else}}ZERO{{end}}", "NON-ZERO", tVal, true},
- {"if 0.0i", "{{if .ComplexZero}}NON-ZERO{{else}}ZERO{{end}}", "ZERO", tVal, true},
- {"if emptystring", "{{if ``}}NON-EMPTY{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
- {"if string", "{{if `notempty`}}NON-EMPTY{{else}}EMPTY{{end}}", "NON-EMPTY", tVal, true},
- {"if emptyslice", "{{if .SIEmpty}}NON-EMPTY{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
- {"if slice", "{{if .SI}}NON-EMPTY{{else}}EMPTY{{end}}", "NON-EMPTY", tVal, true},
- {"if emptymap", "{{if .MSIEmpty}}NON-EMPTY{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
- {"if map", "{{if .MSI}}NON-EMPTY{{else}}EMPTY{{end}}", "NON-EMPTY", tVal, true},
- {"if map unset", "{{if .MXI.none}}NON-ZERO{{else}}ZERO{{end}}", "ZERO", tVal, true},
- {"if map not unset", "{{if not .MXI.none}}ZERO{{else}}NON-ZERO{{end}}", "ZERO", tVal, true},
- {"if $x with $y int", "{{if $x := true}}{{with $y := .I}}{{$x}},{{$y}}{{end}}{{end}}", "true,17", tVal, true},
- {"if $x with $x int", "{{if $x := true}}{{with $x := .I}}{{$x}},{{end}}{{$x}}{{end}}", "17,true", tVal, true},
- {"if else if", "{{if false}}FALSE{{else if true}}TRUE{{end}}", "TRUE", tVal, true},
- {"if else chain", "{{if eq 1 3}}1{{else if eq 2 3}}2{{else if eq 3 3}}3{{end}}", "3", tVal, true},
-
- // Print etc.
- {"print", `{{print "hello, print"}}`, "hello, print", tVal, true},
- {"print 123", `{{print 1 2 3}}`, "1 2 3", tVal, true},
- {"print nil", `{{print nil}}`, "<nil>", tVal, true},
- {"println", `{{println 1 2 3}}`, "1 2 3\n", tVal, true},
- {"printf int", `{{printf "%04x" 127}}`, "007f", tVal, true},
- {"printf float", `{{printf "%g" 3.5}}`, "3.5", tVal, true},
- {"printf complex", `{{printf "%g" 1+7i}}`, "(1+7i)", tVal, true},
- {"printf string", `{{printf "%s" "hello"}}`, "hello", tVal, true},
- {"printf function", `{{printf "%#q" zeroArgs}}`, "`zeroArgs`", tVal, true},
- {"printf field", `{{printf "%s" .U.V}}`, "v", tVal, true},
- {"printf method", `{{printf "%s" .Method0}}`, "M0", tVal, true},
- {"printf dot", `{{with .I}}{{printf "%d" .}}{{end}}`, "17", tVal, true},
- {"printf var", `{{with $x := .I}}{{printf "%d" $x}}{{end}}`, "17", tVal, true},
- {"printf lots", `{{printf "%d %s %g %s" 127 "hello" 7-3i .Method0}}`, "127 hello (7-3i) M0", tVal, true},
-
- // HTML.
- {"html", `{{html "<script>alert(\"XSS\");</script>"}}`,
- "&lt;script&gt;alert(&#34;XSS&#34;);&lt;/script&gt;", nil, true},
- {"html pipeline", `{{printf "<script>alert(\"XSS\");</script>" | html}}`,
- "&lt;script&gt;alert(&#34;XSS&#34;);&lt;/script&gt;", nil, true},
- {"html", `{{html .PS}}`, "a string", tVal, true},
-
- // JavaScript.
- {"js", `{{js .}}`, `It\'d be nice.`, `It'd be nice.`, true},
-
- // URL query.
- {"urlquery", `{{"http://www.example.org/"|urlquery}}`, "http%3A%2F%2Fwww.example.org%2F", nil, true},
-
- // Booleans
- {"not", "{{not true}} {{not false}}", "false true", nil, true},
- {"and", "{{and false 0}} {{and 1 0}} {{and 0 true}} {{and 1 1}}", "false 0 0 1", nil, true},
- {"or", "{{or 0 0}} {{or 1 0}} {{or 0 true}} {{or 1 1}}", "0 1 true 1", nil, true},
- {"boolean if", "{{if and true 1 `hi`}}TRUE{{else}}FALSE{{end}}", "TRUE", tVal, true},
- {"boolean if not", "{{if and true 1 `hi` | not}}TRUE{{else}}FALSE{{end}}", "FALSE", nil, true},
-
- // Indexing.
- {"slice[0]", "{{index .SI 0}}", "3", tVal, true},
- {"slice[1]", "{{index .SI 1}}", "4", tVal, true},
- {"slice[HUGE]", "{{index .SI 10}}", "", tVal, false},
- {"slice[WRONG]", "{{index .SI `hello`}}", "", tVal, false},
- {"map[one]", "{{index .MSI `one`}}", "1", tVal, true},
- {"map[two]", "{{index .MSI `two`}}", "2", tVal, true},
- {"map[NO]", "{{index .MSI `XXX`}}", "0", tVal, true},
- {"map[nil]", "{{index .MSI nil}}", "0", tVal, true},
- {"map[WRONG]", "{{index .MSI 10}}", "", tVal, false},
- {"double index", "{{index .SMSI 1 `eleven`}}", "11", tVal, true},
-
- // Len.
- {"slice", "{{len .SI}}", "3", tVal, true},
- {"map", "{{len .MSI }}", "3", tVal, true},
- {"len of int", "{{len 3}}", "", tVal, false},
- {"len of nothing", "{{len .Empty0}}", "", tVal, false},
-
- // With.
- {"with true", "{{with true}}{{.}}{{end}}", "true", tVal, true},
- {"with false", "{{with false}}{{.}}{{else}}FALSE{{end}}", "FALSE", tVal, true},
- {"with 1", "{{with 1}}{{.}}{{else}}ZERO{{end}}", "1", tVal, true},
- {"with 0", "{{with 0}}{{.}}{{else}}ZERO{{end}}", "ZERO", tVal, true},
- {"with 1.5", "{{with 1.5}}{{.}}{{else}}ZERO{{end}}", "1.5", tVal, true},
- {"with 0.0", "{{with .FloatZero}}{{.}}{{else}}ZERO{{end}}", "ZERO", tVal, true},
- {"with 1.5i", "{{with 1.5i}}{{.}}{{else}}ZERO{{end}}", "(0+1.5i)", tVal, true},
- {"with 0.0i", "{{with .ComplexZero}}{{.}}{{else}}ZERO{{end}}", "ZERO", tVal, true},
- {"with emptystring", "{{with ``}}{{.}}{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
- {"with string", "{{with `notempty`}}{{.}}{{else}}EMPTY{{end}}", "notempty", tVal, true},
- {"with emptyslice", "{{with .SIEmpty}}{{.}}{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
- {"with slice", "{{with .SI}}{{.}}{{else}}EMPTY{{end}}", "[3 4 5]", tVal, true},
- {"with emptymap", "{{with .MSIEmpty}}{{.}}{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
- {"with map", "{{with .MSIone}}{{.}}{{else}}EMPTY{{end}}", "map[one:1]", tVal, true},
- {"with empty interface, struct field", "{{with .Empty4}}{{.V}}{{end}}", "UinEmpty", tVal, true},
- {"with $x int", "{{with $x := .I}}{{$x}}{{end}}", "17", tVal, true},
- {"with $x struct.U.V", "{{with $x := $}}{{$x.U.V}}{{end}}", "v", tVal, true},
- {"with variable and action", "{{with $x := $}}{{$y := $.U.V}}{{$y}}{{end}}", "v", tVal, true},
-
- // Range.
- {"range []int", "{{range .SI}}-{{.}}-{{end}}", "-3--4--5-", tVal, true},
- {"range empty no else", "{{range .SIEmpty}}-{{.}}-{{end}}", "", tVal, true},
- {"range []int else", "{{range .SI}}-{{.}}-{{else}}EMPTY{{end}}", "-3--4--5-", tVal, true},
- {"range empty else", "{{range .SIEmpty}}-{{.}}-{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
- {"range []bool", "{{range .SB}}-{{.}}-{{end}}", "-true--false-", tVal, true},
- {"range []int method", "{{range .SI | .MAdd .I}}-{{.}}-{{end}}", "-20--21--22-", tVal, true},
- {"range map", "{{range .MSI}}-{{.}}-{{end}}", "-1--3--2-", tVal, true},
- {"range empty map no else", "{{range .MSIEmpty}}-{{.}}-{{end}}", "", tVal, true},
- {"range map else", "{{range .MSI}}-{{.}}-{{else}}EMPTY{{end}}", "-1--3--2-", tVal, true},
- {"range empty map else", "{{range .MSIEmpty}}-{{.}}-{{else}}EMPTY{{end}}", "EMPTY", tVal, true},
- {"range empty interface", "{{range .Empty3}}-{{.}}-{{else}}EMPTY{{end}}", "-7--8-", tVal, true},
- {"range empty nil", "{{range .Empty0}}-{{.}}-{{end}}", "", tVal, true},
- {"range $x SI", "{{range $x := .SI}}<{{$x}}>{{end}}", "<3><4><5>", tVal, true},
- {"range $x $y SI", "{{range $x, $y := .SI}}<{{$x}}={{$y}}>{{end}}", "<0=3><1=4><2=5>", tVal, true},
- {"range $x MSIone", "{{range $x := .MSIone}}<{{$x}}>{{end}}", "<1>", tVal, true},
- {"range $x $y MSIone", "{{range $x, $y := .MSIone}}<{{$x}}={{$y}}>{{end}}", "<one=1>", tVal, true},
- {"range $x PSI", "{{range $x := .PSI}}<{{$x}}>{{end}}", "<21><22><23>", tVal, true},
- {"declare in range", "{{range $x := .PSI}}<{{$foo:=$x}}{{$x}}>{{end}}", "<21><22><23>", tVal, true},
- {"range count", `{{range $i, $x := count 5}}[{{$i}}]{{$x}}{{end}}`, "[0]a[1]b[2]c[3]d[4]e", tVal, true},
- {"range nil count", `{{range $i, $x := count 0}}{{else}}empty{{end}}`, "empty", tVal, true},
-
- // Cute examples.
- {"or as if true", `{{or .SI "slice is empty"}}`, "[3 4 5]", tVal, true},
- {"or as if false", `{{or .SIEmpty "slice is empty"}}`, "slice is empty", tVal, true},
-
- // Error handling.
- {"error method, error", "{{.MyError true}}", "", tVal, false},
- {"error method, no error", "{{.MyError false}}", "false", tVal, true},
-
- // Fixed bugs.
- // Must separate dot and receiver; otherwise args are evaluated with dot set to variable.
- {"bug0", "{{range .MSIone}}{{if $.Method1 .}}X{{end}}{{end}}", "X", tVal, true},
- // Do not loop endlessly in indirect for non-empty interfaces.
- // The bug appears with *interface only; looped forever.
- {"bug1", "{{.Method0}}", "M0", &iVal, true},
- // Was taking address of interface field, so method set was empty.
- {"bug2", "{{$.NonEmptyInterface.Method0}}", "M0", tVal, true},
- // Struct values were not legal in with - mere oversight.
- {"bug3", "{{with $}}{{.Method0}}{{end}}", "M0", tVal, true},
- // Nil interface values in if.
- {"bug4", "{{if .Empty0}}non-nil{{else}}nil{{end}}", "nil", tVal, true},
- // Stringer.
- {"bug5", "{{.Str}}", "foozle", tVal, true},
- {"bug5a", "{{.Err}}", "erroozle", tVal, true},
- // Args need to be indirected and dereferenced sometimes.
- {"bug6a", "{{vfunc .V0 .V1}}", "vfunc", tVal, true},
- {"bug6b", "{{vfunc .V0 .V0}}", "vfunc", tVal, true},
- {"bug6c", "{{vfunc .V1 .V0}}", "vfunc", tVal, true},
- {"bug6d", "{{vfunc .V1 .V1}}", "vfunc", tVal, true},
- // Legal parse but illegal execution: non-function should have no arguments.
- {"bug7a", "{{3 2}}", "", tVal, false},
- {"bug7b", "{{$x := 1}}{{$x 2}}", "", tVal, false},
- {"bug7c", "{{$x := 1}}{{3 | $x}}", "", tVal, false},
- // Pipelined arg was not being type-checked.
- {"bug8a", "{{3|oneArg}}", "", tVal, false},
- {"bug8b", "{{4|dddArg 3}}", "", tVal, false},
- // A bug was introduced that broke map lookups for lower-case names.
- {"bug9", "{{.cause}}", "neglect", map[string]string{"cause": "neglect"}, true},
- // Field chain starting with function did not work.
- {"bug10", "{{mapOfThree.three}}-{{(mapOfThree).three}}", "3-3", 0, true},
- // Dereferencing nil pointer while evaluating function arguments should not panic. Issue 7333.
- {"bug11", "{{valueString .PS}}", "", T{}, false},
-}
-
-func zeroArgs() string {
- return "zeroArgs"
-}
-
-func oneArg(a string) string {
- return "oneArg=" + a
-}
-
-func dddArg(a int, b ...string) string {
- return fmt.Sprintln(a, b)
-}
-
-// count returns a channel that will deliver n sequential 1-letter strings starting at "a"
-func count(n int) chan string {
- if n == 0 {
- return nil
- }
- c := make(chan string)
- go func() {
- for i := 0; i < n; i++ {
- c <- "abcdefghijklmnop"[i : i+1]
- }
- close(c)
- }()
- return c
-}
-
-// vfunc takes a *V and a V
-func vfunc(V, *V) string {
- return "vfunc"
-}
-
-// valueString takes a string, not a pointer.
-func valueString(v string) string {
- return "value is ignored"
-}
-
-func add(args ...int) int {
- sum := 0
- for _, x := range args {
- sum += x
- }
- return sum
-}
-
-func echo(arg interface{}) interface{} {
- return arg
-}
-
-func makemap(arg ...string) map[string]string {
- if len(arg)%2 != 0 {
- panic("bad makemap")
- }
- m := make(map[string]string)
- for i := 0; i < len(arg); i += 2 {
- m[arg[i]] = arg[i+1]
- }
- return m
-}
-
-func stringer(s fmt.Stringer) string {
- return s.String()
-}
-
-func mapOfThree() interface{} {
- return map[string]int{"three": 3}
-}
-
-func testExecute(execTests []execTest, template *Template, t *testing.T) {
- b := new(bytes.Buffer)
- funcs := FuncMap{
- "add": add,
- "count": count,
- "dddArg": dddArg,
- "echo": echo,
- "makemap": makemap,
- "mapOfThree": mapOfThree,
- "oneArg": oneArg,
- "stringer": stringer,
- "typeOf": typeOf,
- "valueString": valueString,
- "vfunc": vfunc,
- "zeroArgs": zeroArgs,
- }
- for _, test := range execTests {
- var tmpl *Template
- var err error
- if template == nil {
- tmpl, err = New(test.name).Funcs(funcs).Parse(test.input)
- } else {
- tmpl, err = template.New(test.name).Funcs(funcs).Parse(test.input)
- }
- if err != nil {
- t.Errorf("%s: parse error: %s", test.name, err)
- continue
- }
- b.Reset()
- err = tmpl.Execute(b, test.data)
- switch {
- case !test.ok && err == nil:
- t.Errorf("%s: expected error; got none", test.name)
- continue
- case test.ok && err != nil:
- t.Errorf("%s: unexpected execute error: %s", test.name, err)
- continue
- case !test.ok && err != nil:
- // expected error, got one
- if *debug {
- fmt.Printf("%s: %s\n\t%s\n", test.name, test.input, err)
- }
- }
- result := b.String()
- if result != test.output {
- t.Errorf("%s: expected\n\t%q\ngot\n\t%q", test.name, test.output, result)
- }
- }
-}
-
-func TestExecute(t *testing.T) {
- testExecute(execTests, nil, t)
-}
-
-var delimPairs = []string{
- "", "", // default
- "{{", "}}", // same as default
- "<<", ">>", // distinct
- "|", "|", // same
- "(日)", "(本)", // peculiar
-}
-
-func TestDelims(t *testing.T) {
- const hello = "Hello, world"
- var value = struct{ Str string }{hello}
- for i := 0; i < len(delimPairs); i += 2 {
- text := ".Str"
- left := delimPairs[i+0]
- trueLeft := left
- right := delimPairs[i+1]
- trueRight := right
- if left == "" { // default case
- trueLeft = "{{"
- }
- if right == "" { // default case
- trueRight = "}}"
- }
- text = trueLeft + text + trueRight
- // Now add a comment
- text += trueLeft + "/*comment*/" + trueRight
- // Now add an action containing a string.
- text += trueLeft + `"` + trueLeft + `"` + trueRight
- // At this point text looks like `{{.Str}}{{/*comment*/}}{{"{{"}}`.
- tmpl, err := New("delims").Delims(left, right).Parse(text)
- if err != nil {
- t.Fatalf("delim %q text %q parse err %s", left, text, err)
- }
- var b = new(bytes.Buffer)
- err = tmpl.Execute(b, value)
- if err != nil {
- t.Fatalf("delim %q exec err %s", left, err)
- }
- if b.String() != hello+trueLeft {
- t.Errorf("expected %q got %q", hello+trueLeft, b.String())
- }
- }
-}
-
-// Check that an error from a method flows back to the top.
-func TestExecuteError(t *testing.T) {
- b := new(bytes.Buffer)
- tmpl := New("error")
- _, err := tmpl.Parse("{{.MyError true}}")
- if err != nil {
- t.Fatalf("parse error: %s", err)
- }
- err = tmpl.Execute(b, tVal)
- if err == nil {
- t.Errorf("expected error; got none")
- } else if !strings.Contains(err.Error(), myError.Error()) {
- if *debug {
- fmt.Printf("test execute error: %s\n", err)
- }
- t.Errorf("expected myError; got %s", err)
- }
-}
-
-const execErrorText = `line 1
-line 2
-line 3
-{{template "one" .}}
-{{define "one"}}{{template "two" .}}{{end}}
-{{define "two"}}{{template "three" .}}{{end}}
-{{define "three"}}{{index "hi" $}}{{end}}`
-
-// Check that an error from a nested template contains all the relevant information.
-func TestExecError(t *testing.T) {
- tmpl, err := New("top").Parse(execErrorText)
- if err != nil {
- t.Fatal("parse error:", err)
- }
- var b bytes.Buffer
- err = tmpl.Execute(&b, 5) // 5 is out of range indexing "hi"
- if err == nil {
- t.Fatal("expected error")
- }
- const want = `template: top:7:20: executing "three" at <index "hi" $>: error calling index: index out of range: 5`
- got := err.Error()
- if got != want {
- t.Errorf("expected\n%q\ngot\n%q", want, got)
- }
-}
-
-func TestJSEscaping(t *testing.T) {
- testCases := []struct {
- in, exp string
- }{
- {`a`, `a`},
- {`'foo`, `\'foo`},
- {`Go "jump" \`, `Go \"jump\" \\`},
- {`Yukihiro says "今日は世界"`, `Yukihiro says \"今日は世界\"`},
- {"unprintable \uFDFF", `unprintable \uFDFF`},
- {`<html>`, `\x3Chtml\x3E`},
- }
- for _, tc := range testCases {
- s := JSEscapeString(tc.in)
- if s != tc.exp {
- t.Errorf("JS escaping [%s] got [%s] want [%s]", tc.in, s, tc.exp)
- }
- }
-}
-
-// A nice example: walk a binary tree.
-
-type Tree struct {
- Val int
- Left, Right *Tree
-}
-
-// Use different delimiters to test Set.Delims.
-const treeTemplate = `
- (define "tree")
- [
- (.Val)
- (with .Left)
- (template "tree" .)
- (end)
- (with .Right)
- (template "tree" .)
- (end)
- ]
- (end)
-`
-
-func TestTree(t *testing.T) {
- var tree = &Tree{
- 1,
- &Tree{
- 2, &Tree{
- 3,
- &Tree{
- 4, nil, nil,
- },
- nil,
- },
- &Tree{
- 5,
- &Tree{
- 6, nil, nil,
- },
- nil,
- },
- },
- &Tree{
- 7,
- &Tree{
- 8,
- &Tree{
- 9, nil, nil,
- },
- nil,
- },
- &Tree{
- 10,
- &Tree{
- 11, nil, nil,
- },
- nil,
- },
- },
- }
- tmpl, err := New("root").Delims("(", ")").Parse(treeTemplate)
- if err != nil {
- t.Fatal("parse error:", err)
- }
- var b bytes.Buffer
- stripSpace := func(r rune) rune {
- if r == '\t' || r == '\n' {
- return -1
- }
- return r
- }
- const expect = "[1[2[3[4]][5[6]]][7[8[9]][10[11]]]]"
- // First by looking up the template.
- err = tmpl.Lookup("tree").Execute(&b, tree)
- if err != nil {
- t.Fatal("exec error:", err)
- }
- result := strings.Map(stripSpace, b.String())
- if result != expect {
- t.Errorf("expected %q got %q", expect, result)
- }
- // Then direct to execution.
- b.Reset()
- err = tmpl.ExecuteTemplate(&b, "tree", tree)
- if err != nil {
- t.Fatal("exec error:", err)
- }
- result = strings.Map(stripSpace, b.String())
- if result != expect {
- t.Errorf("expected %q got %q", expect, result)
- }
-}
-
-func TestExecuteOnNewTemplate(t *testing.T) {
- // This is issue 3872.
- _ = New("Name").Templates()
-}
-
-const testTemplates = `{{define "one"}}one{{end}}{{define "two"}}two{{end}}`
-
-func TestMessageForExecuteEmpty(t *testing.T) {
- // Test a truly empty template.
- tmpl := New("empty")
- var b bytes.Buffer
- err := tmpl.Execute(&b, 0)
- if err == nil {
- t.Fatal("expected initial error")
- }
- got := err.Error()
- want := `template: empty: "empty" is an incomplete or empty template`
- if got != want {
- t.Errorf("expected error %s got %s", want, got)
- }
- // Add a non-empty template to check that the error is helpful.
- tests, err := New("").Parse(testTemplates)
- if err != nil {
- t.Fatal(err)
- }
- tmpl.AddParseTree("secondary", tests.Tree)
- err = tmpl.Execute(&b, 0)
- if err == nil {
- t.Fatal("expected second error")
- }
- got = err.Error()
- want = `template: empty: "empty" is an incomplete or empty template; defined templates are: "secondary"`
- if got != want {
- t.Errorf("expected error %s got %s", want, got)
- }
- // Make sure we can execute the secondary.
- err = tmpl.ExecuteTemplate(&b, "secondary", 0)
- if err != nil {
- t.Fatal(err)
- }
-}
-
-type cmpTest struct {
- expr string
- truth string
- ok bool
-}
-
-var cmpTests = []cmpTest{
- {"eq true true", "true", true},
- {"eq true false", "false", true},
- {"eq 1+2i 1+2i", "true", true},
- {"eq 1+2i 1+3i", "false", true},
- {"eq 1.5 1.5", "true", true},
- {"eq 1.5 2.5", "false", true},
- {"eq 1 1", "true", true},
- {"eq 1 2", "false", true},
- {"eq `xy` `xy`", "true", true},
- {"eq `xy` `xyz`", "false", true},
- {"eq .Xuint .Xuint", "true", true},
- {"eq .Xuint .Yuint", "false", true},
- {"eq 3 4 5 6 3", "true", true},
- {"eq 3 4 5 6 7", "false", true},
- {"ne true true", "false", true},
- {"ne true false", "true", true},
- {"ne 1+2i 1+2i", "false", true},
- {"ne 1+2i 1+3i", "true", true},
- {"ne 1.5 1.5", "false", true},
- {"ne 1.5 2.5", "true", true},
- {"ne 1 1", "false", true},
- {"ne 1 2", "true", true},
- {"ne `xy` `xy`", "false", true},
- {"ne `xy` `xyz`", "true", true},
- {"ne .Xuint .Xuint", "false", true},
- {"ne .Xuint .Yuint", "true", true},
- {"lt 1.5 1.5", "false", true},
- {"lt 1.5 2.5", "true", true},
- {"lt 1 1", "false", true},
- {"lt 1 2", "true", true},
- {"lt `xy` `xy`", "false", true},
- {"lt `xy` `xyz`", "true", true},
- {"lt .Xuint .Xuint", "false", true},
- {"lt .Xuint .Yuint", "true", true},
- {"le 1.5 1.5", "true", true},
- {"le 1.5 2.5", "true", true},
- {"le 2.5 1.5", "false", true},
- {"le 1 1", "true", true},
- {"le 1 2", "true", true},
- {"le 2 1", "false", true},
- {"le `xy` `xy`", "true", true},
- {"le `xy` `xyz`", "true", true},
- {"le `xyz` `xy`", "false", true},
- {"le .Xuint .Xuint", "true", true},
- {"le .Xuint .Yuint", "true", true},
- {"le .Yuint .Xuint", "false", true},
- {"gt 1.5 1.5", "false", true},
- {"gt 1.5 2.5", "false", true},
- {"gt 1 1", "false", true},
- {"gt 2 1", "true", true},
- {"gt 1 2", "false", true},
- {"gt `xy` `xy`", "false", true},
- {"gt `xy` `xyz`", "false", true},
- {"gt .Xuint .Xuint", "false", true},
- {"gt .Xuint .Yuint", "false", true},
- {"gt .Yuint .Xuint", "true", true},
- {"ge 1.5 1.5", "true", true},
- {"ge 1.5 2.5", "false", true},
- {"ge 2.5 1.5", "true", true},
- {"ge 1 1", "true", true},
- {"ge 1 2", "false", true},
- {"ge 2 1", "true", true},
- {"ge `xy` `xy`", "true", true},
- {"ge `xy` `xyz`", "false", true},
- {"ge `xyz` `xy`", "true", true},
- {"ge .Xuint .Xuint", "true", true},
- {"ge .Xuint .Yuint", "false", true},
- {"ge .Yuint .Xuint", "true", true},
- // Errors
- {"eq `xy` 1", "", false}, // Different types.
- {"lt true true", "", false}, // Unordered types.
- {"lt 1+0i 1+0i", "", false}, // Unordered types.
-}
-
-func TestComparison(t *testing.T) {
- b := new(bytes.Buffer)
- var cmpStruct = struct {
- Xuint, Yuint uint
- }{3, 4}
- for _, test := range cmpTests {
- text := fmt.Sprintf("{{if %s}}true{{else}}false{{end}}", test.expr)
- tmpl, err := New("empty").Parse(text)
- if err != nil {
- t.Fatal(err)
- }
- b.Reset()
- err = tmpl.Execute(b, &cmpStruct)
- if test.ok && err != nil {
- t.Errorf("%s errored incorrectly: %s", test.expr, err)
- continue
- }
- if !test.ok && err == nil {
- t.Errorf("%s did not error", test.expr)
- continue
- }
- if b.String() != test.truth {
- t.Errorf("%s: want %s; got %s", test.expr, test.truth, b.String())
- }
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-29 02:06:50 +0000