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// Copyright 2019 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 pagecheck implements HTML checkers for discovery site pages.
// It uses the general-purpose checkers in internal/testing/htmlcheck to define
// site-specific checkers.
package pagecheck
import (
"fmt"
"path"
"regexp"
"golang.org/x/pkgsite/internal/stdlib"
"golang.org/x/pkgsite/internal/testing/htmlcheck"
)
// Page describes a discovery site web page for a package, module or directory.
type Page struct {
ModulePath string
Suffix string // package or directory path after module path; empty for a module
Version string
FormattedVersion string
Title string
LicenseType string
LicenseFilePath string
IsLatest bool // is this the latest version of this module?
LatestLink string // href of "Go to latest" link
PackageURLFormat string // the relative package URL, with one %s for "@version"; also used for dirs
ModuleURL string // the relative module URL
}
// Overview describes the contents of the overview tab.
type Overview struct {
ModuleLink string // relative link to module page
ModuleLinkText string
RepoURL string
PackageURL string
ReadmeContent string
ReadmeSource string
}
var (
in = htmlcheck.In
inAll = htmlcheck.InAll
text = htmlcheck.HasText
exactText = htmlcheck.HasExactText
attr = htmlcheck.HasAttr
href = htmlcheck.HasHref
)
// PackageHeader checks a details page header for a package.
func PackageHeader(p *Page, versionedURL bool) htmlcheck.Checker {
fv := p.FormattedVersion
if fv == "" {
fv = p.Version
}
curBreadcrumb := path.Base(p.Suffix)
if p.Suffix == "" {
curBreadcrumb = p.ModulePath
}
return in("",
in("span.DetailsHeader-breadcrumbCurrent", exactText(curBreadcrumb)),
in("h1.DetailsHeader-title", exactText(p.Title)),
in("div.DetailsHeader-version", exactText(fv)),
versionBadge(p),
licenseInfo(p, packageURLPath(p, versionedURL)),
packageTabLinks(p, versionedURL),
moduleInHeader(p, versionedURL))
}
// ModuleHeader checks a details page header for a module.
func ModuleHeader(p *Page, versionedURL bool) htmlcheck.Checker {
fv := p.FormattedVersion
if fv == "" {
fv = p.Version
}
curBreadcrumb := p.ModulePath
if p.ModulePath == stdlib.ModulePath {
curBreadcrumb = "Standard library"
}
return in("",
in("span.DetailsHeader-breadcrumbCurrent", exactText(curBreadcrumb)),
in("h1.DetailsHeader-title", exactText(p.Title)),
in("div.DetailsHeader-version", exactText(fv)),
versionBadge(p),
licenseInfo(p, moduleURLPath(p, versionedURL)),
moduleTabLinks(p, versionedURL))
}
// DirectoryHeader checks a details page header for a directory.
func DirectoryHeader(p *Page, versionedURL bool) htmlcheck.Checker {
fv := p.FormattedVersion
if fv == "" {
fv = p.Version
}
return in("",
in("span.DetailsHeader-breadcrumbCurrent", exactText(path.Base(p.Suffix))),
in("h1.DetailsHeader-title", exactText(p.Title)),
in("div.DetailsHeader-version", exactText(fv)),
// directory pages don't show a header badge
in("div.DetailsHeader-badge", in(".DetailsHeader-badge--unknown")),
licenseInfo(p, packageURLPath(p, versionedURL)),
// directory module links are always versioned (see b/144217401)
moduleInHeader(p, true))
}
// SubdirectoriesDetails checks the detail section of a subdirectories tab.
// If firstHref isn't empty, it and firstText should exactly match
// href and text of the first link in the Directories table.
func SubdirectoriesDetails(firstHref, firstText string) htmlcheck.Checker {
var link htmlcheck.Checker
if firstHref != "" {
link = in("table.Directories a", href(firstHref), exactText(firstText))
}
return in("",
in("th:nth-child(1)", text("^Path$")),
in("th:nth-child(2)", text("^Synopsis$")),
link)
}
// LicenseDetails checks the details section of a license tab.
func LicenseDetails(ltype, bodySubstring, source string) htmlcheck.Checker {
return in("",
in(".License",
text(regexp.QuoteMeta(ltype)),
text("This is not legal advice"),
in("a",
href("/license-policy"),
exactText("Read disclaimer.")),
in(".License-contents",
text(regexp.QuoteMeta(bodySubstring)))),
in(".License-source",
exactText("Source: "+source)))
}
// OverviewDetails checks the details section of an overview tab.
func OverviewDetails(ov *Overview) htmlcheck.Checker {
var pkg htmlcheck.Checker
if ov.PackageURL != "" {
pkg = in(".Overview-sourceCodeLink a:nth-of-type(2)",
href(ov.PackageURL),
exactText(ov.PackageURL))
}
return in("",
in("div.Overview-module > a",
href(ov.ModuleLink),
exactText(ov.ModuleLinkText)),
in(".Overview-sourceCodeLink a:nth-of-type(1)",
href(ov.RepoURL),
exactText(ov.RepoURL)),
pkg,
in(".Overview-readmeContent", text(ov.ReadmeContent)),
in(".Overview-readmeSource", exactText("Source: "+ov.ReadmeSource)))
}
// versionBadge checks the latest-version badge on a header.
func versionBadge(p *Page) htmlcheck.Checker {
class := "DetailsHeader-badge"
if p.IsLatest {
class += "--latest"
} else {
class += "--goToLatest"
}
return in("div.DetailsHeader-badge",
attr("class", `\b`+regexp.QuoteMeta(class)+`\b`), // the badge has this class too
in("a", href(p.LatestLink), exactText("Go to latest")))
}
// licenseInfo checks the license part of the info label in the header.
func licenseInfo(p *Page, urlPath string) htmlcheck.Checker {
if p.LicenseType == "" {
return in("[data-test-id=DetailsHeader-infoLabelLicense]", text("None detected"))
}
return in("[data-test-id=DetailsHeader-infoLabelLicense] a",
href(fmt.Sprintf("%s?tab=licenses#lic-0", urlPath)),
exactText(p.LicenseType))
}
// moduleInHeader checks the module part of the info label in the header.
func moduleInHeader(p *Page, versionedURL bool) htmlcheck.Checker {
modURL := moduleURLPath(p, versionedURL)
text := p.ModulePath
if p.ModulePath == stdlib.ModulePath {
text = "Standard library"
}
return in("a[data-test-id=DetailsHeader-infoLabelModule]", href(modURL), exactText(text))
}
// Check that all the navigation tabs link to the same package at the same version.
func packageTabLinks(p *Page, versionedURL bool) htmlcheck.Checker {
return inAll("a.DetailsNav-link[href]",
attr("href", "^"+regexp.QuoteMeta(packageURLPath(p, versionedURL))))
}
// Check that all the navigation tabs link to the same module at the same version.
func moduleTabLinks(p *Page, versionedURL bool) htmlcheck.Checker {
return inAll("a.DetailsNav-link[href]",
attr("href", "^"+regexp.QuoteMeta(moduleURLPath(p, versionedURL))))
}
func packageURLPath(p *Page, versioned bool) string {
v := ""
if versioned {
v = "@" + p.Version
}
return fmt.Sprintf(p.PackageURLFormat, v)
}
func moduleURLPath(p *Page, versioned bool) string {
if versioned {
return p.ModuleURL + "@" + p.Version
}
return p.ModuleURL
}