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package moonbitlang_test
import (
"os"
"path/filepath"
"slices"
"strings"
"testing"
"rickub.com/turbo-editors/turbo-core/profile"
"rickub.com/turbo-editors/turbo-core/syntax"
"rickub.com/turbo-editors/turbo-moonbit/internal/moonbitlang"
)
// fixedMenuHotKeys are the hot keys turbo-core's own menus take. The toolchain
// menu may not claim one of them, or one of the two would be unreachable from
// the keyboard and nothing would say so.
var fixedMenuHotKeys = []rune{'F', 'E', 'S', 'R', 'C', 'O', 'W', 'N', 'H'}
func TestProfileNamesTheEditor(t *testing.T) {
p := moonbitlang.Profile()
if p.Name != "Turbo MoonBit" {
t.Errorf("Name = %q, want %q", p.Name, "Turbo MoonBit")
}
if p.Slug != "turbo-moonbit" {
t.Errorf("Slug = %q, want %q", p.Slug, "turbo-moonbit")
}
// The About box and the status bar read this out, so it is the language's
// own spelling rather than the registry's lower-case name.
if p.Language != "MoonBit" {
t.Errorf("Language = %q, want %q", p.Language, "MoonBit")
}
}
func TestSlugDerivesEveryPath(t *testing.T) {
p := moonbitlang.Profile()
if got := p.ProjectDir(); got != ".turbo-moonbit" {
t.Errorf("ProjectDir() = %q, want %q", got, ".turbo-moonbit")
}
for name, got := range map[string]string{
"DirEnvVar": p.DirEnvVar(),
"ThemeDirEnvVar": p.ThemeDirEnvVar(),
"SnippetDirEnvVar": p.SnippetDirEnvVar(),
} {
if !strings.HasPrefix(got, "TURBO_MOONBIT_") {
t.Errorf("%s() = %q, want a TURBO_MOONBIT_ prefix", name, got)
}
}
}
func TestThemeDirFollowsItsEnvironmentVariable(t *testing.T) {
p := moonbitlang.Profile()
want := t.TempDir()
t.Setenv(p.ThemeDirEnvVar(), want)
if got := p.ThemeDir(); got != want {
t.Errorf("ThemeDir() = %q, want %q", got, want)
}
}
func TestToolsMenuHotKeyClashesWithNoFixedMenu(t *testing.T) {
label := moonbitlang.Profile().ToolsMenu
hotKey, ok := hotKeyOf(label)
if !ok {
t.Fatalf("ToolsMenu = %q, which marks no hot key between tildes", label)
}
if slices.Contains(fixedMenuHotKeys, hotKey) {
t.Errorf("ToolsMenu hot key %q is already taken by a fixed menu", hotKey)
}
if got := strings.ReplaceAll(label, "~", ""); got != "MoonBit" {
t.Errorf("ToolsMenu reads %q once the tildes are removed, want %q", got, "MoonBit")
}
}
// hotKeyOf returns the upper-case letter a menu label marks between tildes.
func hotKeyOf(label string) (rune, bool) {
open := strings.Index(label, "~")
if open < 0 {
return 0, false
}
rest := label[open+1:]
shut := strings.Index(rest, "~")
if shut != 1 {
return 0, false
}
return []rune(strings.ToUpper(rest))[0], true
}
func TestRootMarkersAreMoonModules(t *testing.T) {
want := []string{"moon.mod", "moon.mod.json"}
if got := moonbitlang.Profile().RootMarkers; !slices.Equal(got, want) {
t.Errorf("RootMarkers = %v, want %v", got, want)
}
}
func TestServerIsMoonLSPOverStdio(t *testing.T) {
server := moonbitlang.Profile().Server
if server.Command != "moon-lsp" {
t.Errorf("Server.Command = %q, want %q", server.Command, "moon-lsp")
}
// moon-lsp with no argument prints its usage and exits, which the editor
// would see as a server that died at once.
if !slices.Contains(server.Args, "--stdio") {
t.Errorf("Server.Args = %v, want it to contain --stdio", server.Args)
}
if server.InstallHint == "" {
t.Error("Server.InstallHint is empty; a missing server would say nothing useful")
}
// It is shown on the status bar, so it has to fit on a narrow line.
if len(server.InstallHint) > 72 {
t.Errorf("InstallHint is %d characters, too long for a status bar", len(server.InstallHint))
}
}
func TestServerArgsCannotBeAppendedToByACaller(t *testing.T) {
first := moonbitlang.ServerArgs()
first = append(first, "--nonsense")
if second := moonbitlang.ServerArgs(); slices.Contains(second, "--nonsense") {
t.Errorf("ServerArgs() = %v after a caller appended to an earlier result", second)
}
}
func TestServerIsLookedForInMoonHome(t *testing.T) {
home := t.TempDir()
t.Setenv("MOON_HOME", home)
dirs := moonbitlang.Profile().Server.Dirs
want := filepath.Join(home, "bin")
if !slices.Contains(dirs, want) {
t.Errorf("Server.Dirs = %v, want it to contain %q", dirs, want)
}
}
func TestServerDirsFallBackToTheDefaultInstallDirectory(t *testing.T) {
t.Setenv("MOON_HOME", "")
home, err := os.UserHomeDir()
if err != nil {
t.Skip("no home directory on this machine")
}
want := filepath.Join(home, ".moon", "bin")
if dirs := moonbitlang.ServerDirs(); !slices.Contains(dirs, want) {
t.Errorf("ServerDirs() = %v, want it to contain %q", dirs, want)
}
}
func TestServerDirsDoNotRepeatOneDirectory(t *testing.T) {
home, err := os.UserHomeDir()
if err != nil {
t.Skip("no home directory on this machine")
}
t.Setenv("MOON_HOME", filepath.Join(home, ".moon"))
dirs := moonbitlang.ServerDirs()
if len(dirs) != 1 {
t.Errorf("ServerDirs() = %v with MOON_HOME at the default, want one entry", dirs)
}
}
func TestProfileIsReadAfreshEveryTime(t *testing.T) {
// Server.Dirs comes out of the environment, so a package-level variable
// would freeze whatever MOON_HOME said when the binary was linked.
first := t.TempDir()
t.Setenv("MOON_HOME", first)
before := moonbitlang.Profile().Server.Dirs
second := t.TempDir()
t.Setenv("MOON_HOME", second)
after := moonbitlang.Profile().Server.Dirs
if slices.Equal(before, after) {
t.Errorf("Profile().Server.Dirs = %v both times; it did not follow MOON_HOME", after)
}
}
func TestTemplatesAreAllFilledIn(t *testing.T) {
templates := moonbitlang.Profile().Templates
for name, template := range map[string]string{
"Settings": templates.Settings,
"Snippets": templates.Snippets,
"Tools": templates.Tools,
} {
if template == "" {
t.Errorf("Templates.%s is empty; the editor would offer to write nothing", name)
}
}
}
func TestRegisterTeachesTheLibraryMoonBit(t *testing.T) {
moonbitlang.Register()
if !slices.Contains(syntax.Registered(), moonbitlang.Language) {
t.Fatalf("Registered() = %v, want it to contain %q", syntax.Registered(), moonbitlang.Language)
}
for _, path := range []string{"main.mbt", "pkg.mbti", "script.mbtx", "DEEP/nested/x.MBT"} {
if got := syntax.LanguageOf(path, ""); got != moonbitlang.Language {
t.Errorf("LanguageOf(%q) = %q, want %q", path, got, moonbitlang.Language)
}
}
}
func TestRegisterLeavesOtherFilesAlone(t *testing.T) {
moonbitlang.Register()
cases := map[string]syntax.Language{
// A .mbt.md is a Markdown document with MoonBit in its fences. Its
// extension is .md, and Markdown is what should colour it.
"README.mbt.md": syntax.LanguageMarkdown,
"moon.mod.json": syntax.LanguageNone,
"Dockerfile": syntax.LanguageDockerfile,
"main.py": syntax.LanguageNone,
}
for path, want := range cases {
if got := syntax.LanguageOf(path, ""); got != want {
t.Errorf("LanguageOf(%q) = %q, want %q", path, got, want)
}
}
}
func TestNoShebangIsClaimed(t *testing.T) {
moonbitlang.Register()
// MoonBit has no interpreter line: a file opening with #! would lex as an
// attribute named ! and fail. Claiming one would take a shell script away
// from the scanner that can actually colour it.
if got := syntax.LanguageOf("script", "#!/usr/bin/env moon"); got == moonbitlang.Language {
t.Errorf("LanguageOf with a moon shebang = %q, want anything but MoonBit", got)
}
}
// A profile is a literal, so this example is the whole of how one is used.
func ExampleProfile() {
moonbitlang.Register()
var p profile.Profile = moonbitlang.Profile()
_ = p.ProjectDir() // ".turbo-moonbit"
}
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