| // Copyright 2009 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"; |
| "container/vector"; |
| "fmt"; |
| "io"; |
| "testing"; |
| ) |
| |
| type Test struct { |
| in, out, err string; |
| } |
| |
| type T struct { |
| item string; |
| value string; |
| } |
| |
| type S struct { |
| header string; |
| integer int; |
| raw string; |
| innerT T; |
| innerPointerT *T; |
| data []T; |
| pdata []*T; |
| empty []*T; |
| emptystring string; |
| null []*T; |
| vec *vector.Vector; |
| true bool; |
| false bool; |
| } |
| |
| var t1 = T{"ItemNumber1", "ValueNumber1"} |
| var t2 = T{"ItemNumber2", "ValueNumber2"} |
| |
| func uppercase(v interface{}) string { |
| s := v.(string); |
| t := ""; |
| for i := 0; i < len(s); i++ { |
| c := s[i]; |
| if 'a' <= c && c <= 'z' { |
| c = c + 'A' - 'a' |
| } |
| t += string(c); |
| } |
| return t; |
| } |
| |
| func plus1(v interface{}) string { |
| i := v.(int); |
| return fmt.Sprint(i + 1); |
| } |
| |
| func writer(f func(interface{}) string) (func(io.Writer, interface{}, string)) { |
| return func(w io.Writer, v interface{}, format string) { |
| io.WriteString(w, f(v)) |
| } |
| } |
| |
| |
| var formatters = FormatterMap{ |
| "uppercase": writer(uppercase), |
| "+1": writer(plus1), |
| } |
| |
| var tests = []*Test{ |
| // Simple |
| &Test{"", "", ""}, |
| &Test{"abc\ndef\n", "abc\ndef\n", ""}, |
| &Test{" {.meta-left} \n", "{", ""}, |
| &Test{" {.meta-right} \n", "}", ""}, |
| &Test{" {.space} \n", " ", ""}, |
| &Test{" {.tab} \n", "\t", ""}, |
| &Test{" {#comment} \n", "", ""}, |
| |
| // Variables at top level |
| &Test{ |
| in: "{header}={integer}\n", |
| |
| out: "Header=77\n", |
| }, |
| |
| // Section |
| &Test{ |
| in: "{.section data }\n" |
| "some text for the section\n" |
| "{.end}\n", |
| |
| out: "some text for the section\n", |
| }, |
| &Test{ |
| in: "{.section data }\n" |
| "{header}={integer}\n" |
| "{.end}\n", |
| |
| out: "Header=77\n", |
| }, |
| &Test{ |
| in: "{.section pdata }\n" |
| "{header}={integer}\n" |
| "{.end}\n", |
| |
| out: "Header=77\n", |
| }, |
| &Test{ |
| in: "{.section pdata }\n" |
| "data present\n" |
| "{.or}\n" |
| "data not present\n" |
| "{.end}\n", |
| |
| out: "data present\n", |
| }, |
| &Test{ |
| in: "{.section empty }\n" |
| "data present\n" |
| "{.or}\n" |
| "data not present\n" |
| "{.end}\n", |
| |
| out: "data not present\n", |
| }, |
| &Test{ |
| in: "{.section null }\n" |
| "data present\n" |
| "{.or}\n" |
| "data not present\n" |
| "{.end}\n", |
| |
| out: "data not present\n", |
| }, |
| &Test{ |
| in: "{.section pdata }\n" |
| "{header}={integer}\n" |
| "{.section @ }\n" |
| "{header}={integer}\n" |
| "{.end}\n" |
| "{.end}\n", |
| |
| out: "Header=77\n" |
| "Header=77\n", |
| }, |
| &Test{ |
| in: "{.section data}{.end} {header}\n", |
| |
| out: " Header\n", |
| }, |
| |
| // Repeated |
| &Test{ |
| in: "{.section pdata }\n" |
| "{.repeated section @ }\n" |
| "{item}={value}\n" |
| "{.end}\n" |
| "{.end}\n", |
| |
| out: "ItemNumber1=ValueNumber1\n" |
| "ItemNumber2=ValueNumber2\n", |
| }, |
| &Test{ |
| in: "{.section pdata }\n" |
| "{.repeated section @ }\n" |
| "{item}={value}\n" |
| "{.or}\n" |
| "this should not appear\n" |
| "{.end}\n" |
| "{.end}\n", |
| |
| out: "ItemNumber1=ValueNumber1\n" |
| "ItemNumber2=ValueNumber2\n", |
| }, |
| &Test{ |
| in: "{.section @ }\n" |
| "{.repeated section empty }\n" |
| "{item}={value}\n" |
| "{.or}\n" |
| "this should appear: empty field\n" |
| "{.end}\n" |
| "{.end}\n", |
| |
| out: "this should appear: empty field\n", |
| }, |
| &Test{ |
| in: "{.repeated section pdata }\n" |
| "{item}\n" |
| "{.alternates with}\n" |
| "is\nover\nmultiple\nlines\n" |
| "{.end}\n", |
| |
| out: "ItemNumber1\n" |
| "is\nover\nmultiple\nlines\n" |
| "ItemNumber2\n", |
| }, |
| &Test{ |
| in: "{.section pdata }\n" |
| "{.repeated section @ }\n" |
| "{item}={value}\n" |
| "{.alternates with}DIVIDER\n" |
| "{.or}\n" |
| "this should not appear\n" |
| "{.end}\n" |
| "{.end}\n", |
| |
| out: "ItemNumber1=ValueNumber1\n" |
| "DIVIDER\n" |
| "ItemNumber2=ValueNumber2\n", |
| }, |
| &Test{ |
| in: "{.repeated section vec }\n" |
| "{@}\n" |
| "{.end}\n", |
| |
| out: "elt1\n" |
| "elt2\n", |
| }, |
| &Test{ |
| in: "{.repeated section integer}{.end}", |
| |
| err: "line 1: .repeated: cannot repeat integer (type int)", |
| }, |
| |
| // Nested names |
| &Test{ |
| in: "{.section @ }\n" |
| "{innerT.item}={innerT.value}\n" |
| "{.end}", |
| |
| out: "ItemNumber1=ValueNumber1\n", |
| }, |
| &Test{ |
| in: "{.section @ }\n" |
| "{innerT.item}={.section innerT}{.section value}{@}{.end}{.end}\n" |
| "{.end}", |
| |
| out: "ItemNumber1=ValueNumber1\n", |
| }, |
| |
| |
| // Formatters |
| &Test{ |
| in: "{.section pdata }\n" |
| "{header|uppercase}={integer|+1}\n" |
| "{header|html}={integer|str}\n" |
| "{.end}\n", |
| |
| out: "HEADER=78\n" |
| "Header=77\n", |
| }, |
| |
| &Test{ |
| in: "{raw}\n" |
| "{raw|html}\n", |
| |
| out: "&<>!@ #$%^\n" |
| "&<>!@ #$%^\n", |
| }, |
| |
| &Test{ |
| in: "{.section emptystring}emptystring{.end}\n" |
| "{.section header}header{.end}\n", |
| |
| out: "\nheader\n", |
| }, |
| |
| &Test{ |
| in: "{.section true}1{.or}2{.end}\n" |
| "{.section false}3{.or}4{.end}\n", |
| |
| out: "1\n4\n", |
| }, |
| } |
| |
| func TestAll(t *testing.T) { |
| s := new(S); |
| // initialized by hand for clarity. |
| s.header = "Header"; |
| s.integer = 77; |
| s.raw = "&<>!@ #$%^"; |
| s.innerT = t1; |
| s.data = []T{t1, t2}; |
| s.pdata = []*T{&t1, &t2}; |
| s.empty = []*T{}; |
| s.null = nil; |
| s.vec = vector.New(0); |
| s.vec.Push("elt1"); |
| s.vec.Push("elt2"); |
| s.true = true; |
| s.false = false; |
| |
| var buf bytes.Buffer; |
| for _, test := range tests { |
| buf.Reset(); |
| tmpl, err := Parse(test.in, formatters); |
| if err != nil { |
| t.Error("unexpected parse error:", err); |
| continue; |
| } |
| err = tmpl.Execute(s, &buf); |
| if test.err == "" { |
| if err != nil { |
| t.Error("unexpected execute error:", err) |
| } |
| } else { |
| if err == nil || err.String() != test.err { |
| t.Errorf("expected execute error %q, got %q", test.err, err.String()) |
| } |
| } |
| if buf.String() != test.out { |
| t.Errorf("for %q: expected %q got %q", test.in, test.out, buf.String()) |
| } |
| } |
| } |
| |
| func TestStringDriverType(t *testing.T) { |
| tmpl, err := Parse("template: {@}", nil); |
| if err != nil { |
| t.Error("unexpected parse error:", err) |
| } |
| var b bytes.Buffer; |
| err = tmpl.Execute("hello", &b); |
| if err != nil { |
| t.Error("unexpected execute error:", err) |
| } |
| s := b.String(); |
| if s != "template: hello" { |
| t.Errorf("failed passing string as data: expected %q got %q", "template: hello", s) |
| } |
| } |
| |
| func TestTwice(t *testing.T) { |
| tmpl, err := Parse("template: {@}", nil); |
| if err != nil { |
| t.Error("unexpected parse error:", err) |
| } |
| var b bytes.Buffer; |
| err = tmpl.Execute("hello", &b); |
| if err != nil { |
| t.Error("unexpected parse error:", err) |
| } |
| s := b.String(); |
| text := "template: hello"; |
| if s != text { |
| t.Errorf("failed passing string as data: expected %q got %q", text, s) |
| } |
| err = tmpl.Execute("hello", &b); |
| if err != nil { |
| t.Error("unexpected parse error:", err) |
| } |
| s = b.String(); |
| text += text; |
| if s != text { |
| t.Errorf("failed passing string as data: expected %q got %q", text, s) |
| } |
| } |
| |
| func TestCustomDelims(t *testing.T) { |
| // try various lengths. zero should catch error. |
| for i := 0; i < 7; i++ { |
| for j := 0; j < 7; j++ { |
| tmpl := New(nil); |
| // first two chars deliberately the same to test equal left and right delims |
| ldelim := "$!#$%^&"[0:i]; |
| rdelim := "$*&^%$!"[0:j]; |
| tmpl.SetDelims(ldelim, rdelim); |
| // if braces, this would be template: {@}{.meta-left}{.meta-right} |
| text := "template: " + |
| ldelim + "@" + rdelim + |
| ldelim + ".meta-left" + rdelim + |
| ldelim + ".meta-right" + rdelim; |
| err := tmpl.Parse(text); |
| if err != nil { |
| if i == 0 || j == 0 { // expected |
| continue |
| } |
| t.Error("unexpected parse error:", err); |
| } else if i == 0 || j == 0 { |
| t.Errorf("expected parse error for empty delimiter: %d %d %q %q", i, j, ldelim, rdelim); |
| continue; |
| } |
| var b bytes.Buffer; |
| err = tmpl.Execute("hello", &b); |
| s := b.String(); |
| if s != "template: hello"+ldelim+rdelim { |
| t.Errorf("failed delim check(%q %q) %q got %q", ldelim, rdelim, text, s) |
| } |
| } |
| } |
| } |
| |
| // Test that a variable evaluates to the field itself and does not further indirection |
| func TestVarIndirection(t *testing.T) { |
| s := new(S); |
| // initialized by hand for clarity. |
| s.innerPointerT = &t1; |
| |
| var buf bytes.Buffer; |
| input := "{.section @}{innerPointerT}{.end}"; |
| tmpl, err := Parse(input, nil); |
| if err != nil { |
| t.Fatal("unexpected parse error:", err) |
| } |
| err = tmpl.Execute(s, &buf); |
| if err != nil { |
| t.Fatal("unexpected execute error:", err) |
| } |
| expect := fmt.Sprintf("%v", &t1); // output should be hex address of t1 |
| if buf.String() != expect { |
| t.Errorf("for %q: expected %q got %q", input, expect, buf.String()) |
| } |
| } |