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execFiles_test.go
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execFiles_test.go
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package treetop
import (
"html/template"
"net/http"
"net/http/httptest"
"strings"
"testing"
)
func TestFileExecutor_NewViewHandler(t *testing.T) {
standardHandler := func(exec ViewExecutor) ViewHandler {
base := NewView("testdata/base.html", Constant(struct {
Content interface{}
PS interface{}
}{
Content: struct {
Message string
Sub interface{}
}{
Message: "from base to content",
Sub: "from base via content to sub",
},
PS: "from base to ps",
}))
content := base.NewSubView("content", "testdata/content.html", Constant(struct {
Message string
Sub interface{}
}{
Message: "from content to content!",
Sub: "from content to sub",
}))
content.NewDefaultSubView("sub", "testdata/sub.html", Constant("from sub to sub"))
ps := base.NewSubView("ps", "testdata/ps.html", Constant("from ps to ps"))
return exec.NewViewHandler(content, ps)
}
tests := []struct {
name string
getHandler func(exec ViewExecutor) ViewHandler
expectPage string
expectTemplate string
expectErrors []string
pageOnly bool
templateOnly bool
}{
{
name: "functional example",
getHandler: standardHandler,
expectPage: stripIndent(`<html>
<body>
<div id="content">
<p>Given from base to content</p>
<p id="sub">Given from base via content to sub</p>
</div>
<div id="ps">Given from base to ps</div>
</body>
</html>`),
expectTemplate: stripIndent(`<template>
<div id="content">
<p>Given from content to content!</p>
<p id="sub">Given from content to sub</p>
</div>
<div id="ps">Given from ps to ps</div>
</template>`),
},
{
name: "page only",
getHandler: standardHandler,
expectPage: stripIndent(`<html>
<body>
<div id="content">
<p>Given from base to content</p>
<p id="sub">Given from base via content to sub</p>
</div>
<div id="ps">Given from base to ps</div>
</body>
</html>`),
expectTemplate: "Not Acceptable\n",
pageOnly: true,
},
{
name: "template only",
getHandler: standardHandler,
expectPage: "Not Acceptable\n",
expectTemplate: stripIndent(`<template>
<div id="content">
<p>Given from content to content!</p>
<p id="sub">Given from content to sub</p>
</div>
<div id="ps">Given from ps to ps</div>
</template>`),
templateOnly: true,
},
{
name: "file not found",
getHandler: func(exec ViewExecutor) ViewHandler {
return exec.NewViewHandler(NewView("notexists.html", Noop))
},
expectPage: "Not Acceptable\n",
expectTemplate: "Not Acceptable\n",
expectErrors: []string{
`failed to load template "notexists.html": open notexists.html: no such file or directory`,
`failed to load template "notexists.html": open notexists.html: no such file or directory`,
},
},
{
name: "error template file",
getHandler: func(exec ViewExecutor) ViewHandler {
return exec.NewViewHandler(NewView("testdata/missingFunc.html", Noop))
},
expectPage: "Not Acceptable\n",
expectTemplate: "Not Acceptable\n",
expectErrors: []string{
`failed to parse template "testdata/missingFunc.html": template: :2: function "func_that_does_not_exist" not defined`,
`failed to parse template "testdata/missingFunc.html": template: :2: function "func_that_does_not_exist" not defined`,
},
},
{
name: "with nil subview",
getHandler: func(exec ViewExecutor) ViewHandler {
base := NewView("testdata/base.html", Constant(struct {
Content interface{}
PS interface{}
}{
Content: struct {
Message string
Sub interface{}
}{
Message: "from base to content",
Sub: "from base via content to sub",
},
PS: "from base to ps",
}))
content := base.NewSubView("content", "testdata/content.html", Constant(struct {
Message string
Sub interface{}
}{
Message: "from content to content!",
Sub: "from content to sub",
}))
content.NewDefaultSubView("sub", "testdata/sub.html", Constant("from sub to sub"))
content.NewSubView("never", "never.html", Noop) // nil subview
ps := base.NewSubView("ps", "testdata/ps.html", Constant("from ps to ps"))
return exec.NewViewHandler(content, ps)
},
expectPage: stripIndent(`<html>
<body>
<div id="content">
<p>Given from base to content</p>
<p id="sub">Given from base via content to sub</p>
</div>
<div id="ps">Given from base to ps</div>
</body>
</html>
`),
expectTemplate: stripIndent(`<template>
<div id="content">
<p>Given from content to content!</p>
<p id="sub">Given from content to sub</p>
</div>
<div id="ps">Given from ps to ps</div>
</template>`),
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
exec := &FileExecutor{}
handler := tt.getHandler(exec)
gotErrors := exec.FlushErrors()
for len(gotErrors) < len(tt.expectErrors) {
gotErrors = append(gotErrors, nil)
}
for i, err := range gotErrors {
if err == nil {
t.Errorf("Expecting an error [%d]: %s", i, tt.expectErrors[i])
continue
}
if i >= len(tt.expectErrors) {
t.Errorf("Unexpected error [%d]: %s", i, err.Error())
continue
}
if got := err.Error(); got != tt.expectErrors[i] {
t.Errorf("Expecting error [%d]\n%s\ngot\n%s", i, tt.expectErrors[i], got)
}
}
if tt.pageOnly {
handler = handler.PageOnly()
}
if tt.templateOnly {
handler = handler.FragmentOnly()
}
rec := httptest.NewRecorder()
handler.ServeHTTP(rec, mockRequest("/some/path", "*/*"))
gotPage := stripIndent(sDumpBody(rec))
if gotPage != stripIndent(tt.expectPage) {
t.Errorf("Expecting page body\n%s\nGot\n%s", tt.expectPage, gotPage)
}
rec = httptest.NewRecorder()
handler.ServeHTTP(rec, mockRequest("/some/path", TemplateContentType))
gotTemplate := stripIndent(sDumpBody(rec))
if gotTemplate != stripIndent(tt.expectTemplate) {
t.Errorf("Expecting partial body\n%s\nGot\n%s", tt.expectTemplate, gotTemplate)
}
})
}
}
func TestFileExecutor_FuncMap(t *testing.T) {
exec := FileExecutor{
Funcs: template.FuncMap{
"title": strings.Title,
},
}
v := NewView("./testdata/titles.html", Constant("the go programming language"))
h := exec.NewViewHandler(v)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, mockRequest("/some/path", "*/*"))
gotPage := stripIndent(sDumpBody(rec))
if gotPage != stripIndent(strings.TrimSpace(`
<div>
<p>Input: "the go programming language"</p>
<p>Output 0: The Go Programming Language</p>
<p>Output 1: "The Go Programming Language"</p>
<p>Output 2: "The Go Programming Language"</p>
</div>
`)) {
t.Errorf("Expecting title case, got\n%s", gotPage)
}
}
func TestFileExecutor_KeyedString(t *testing.T) {
exec := FileExecutor{
KeyedString: map[string]string{
"local://titles.html": `<h1>{{ . }}</h1>`,
},
}
v := NewView("local://titles.html", Constant("Test Title"))
h := exec.NewViewHandler(v)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, mockRequest("/some/path", "*/*"))
gotPage := stripIndent(sDumpBody(rec))
if gotPage != stripIndent(strings.TrimSpace("<h1>Test Title</h1>")) {
t.Errorf("Expecting title case, got\n%s", gotPage)
}
}
func TestFileExecutor_UsingSameTemplate(t *testing.T) {
exec := FileExecutor{
KeyedString: map[string]string{
"local://common.html": `<h1>Common {{ . }}</h1>`,
},
}
v := NewView("./testdata/base.html", func(rsp Response, req *http.Request) interface{} {
return struct {
Content interface{}
PS interface{}
}{
Content: rsp.HandleSubView("content", req),
PS: rsp.HandleSubView("ps", req),
}
})
v.NewDefaultSubView("content", "local://common.html", Constant("Content Data"))
v.NewDefaultSubView("ps", "local://common.html", Constant("Postscript Data"))
h := exec.NewViewHandler(v)
rec := httptest.NewRecorder()
h.ServeHTTP(rec, mockRequest("/some/path", "*/*"))
gotPage := strings.TrimSpace(stripIndent(sDumpBody(rec)))
expectPage := strings.TrimSpace(stripIndent(`
<html>
<body>
<h1>Common Content Data</h1>
<h1>Common Postscript Data</h1>
</body>
</html>
`))
if gotPage != expectPage {
t.Errorf("Expecting\n%s\ngot\n%s", expectPage, gotPage)
}
}