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package tuigen
import (
"bytes"
"strings"
"testing"
)
func parseFileForTest(t *testing.T, source string) *File {
t.Helper()
lexer := NewLexer("test.gsx", source)
parser := NewParser(lexer)
file, err := parser.ParseFile()
if err != nil {
t.Fatalf("parse failed: %v", err)
}
return file
}
func parseAnalyzeGenerate(t *testing.T, source string) string {
t.Helper()
file := parseFileForTest(t, source)
analyzer := NewAnalyzer()
if err := analyzer.Analyze(file); err != nil {
t.Fatalf("analyze failed: %v", err)
}
gen := NewGenerator()
gen.SkipImports = true
out, err := gen.Generate(file, "test.gsx")
if err != nil {
t.Fatalf("generate failed: %v", err)
}
return string(out)
}
func TestGenerator_GenerateString(t *testing.T) {
file := parseFileForTest(t, `package x
templ Empty() {
<div></div>
}`)
gen := NewGenerator()
gen.SkipImports = true
code, err := gen.GenerateString(file, "test.gsx")
if err != nil {
t.Fatalf("GenerateString failed: %v", err)
}
if !strings.Contains(code, "func Empty() *EmptyView") {
t.Errorf("GenerateString output missing component function, got:\n%s", code)
}
if !strings.Contains(code, "// Source: test.gsx") {
t.Errorf("GenerateString output missing source header, got:\n%s", code)
}
}
func TestGenerator_GenerateToBuffer(t *testing.T) {
file := parseFileForTest(t, `package x
templ Box() {
<div></div>
}`)
gen := NewGenerator()
gen.SkipImports = true
var buf bytes.Buffer
if err := gen.GenerateToBuffer(&buf, file, "test.gsx"); err != nil {
t.Fatalf("GenerateToBuffer failed: %v", err)
}
if !strings.Contains(buf.String(), "func Box() *BoxView") {
t.Errorf("buffer missing generated function, got:\n%s", buf.String())
}
}
func TestGenerator_ParseAndGenerate_FullImports(t *testing.T) {
source := `package x
import (
"fmt"
)
templ Greeting(name string) {
<div>
<span>{fmt.Sprintf("hello %s", name)}</span>
</div>
}`
out, err := ParseAndGenerate("test.gsx", source)
if err != nil {
t.Fatalf("ParseAndGenerate failed: %v", err)
}
code := string(out)
for _, want := range []string{
"func Greeting(name string) *GreetingView",
`fmt.Sprintf("hello %s", name)`,
`tui "github.com/grindlemire/go-tui"`,
} {
if !strings.Contains(code, want) {
t.Errorf("output missing %q, got:\n%s", want, code)
}
}
}
func TestGenerator_GetSourceMap(t *testing.T) {
file := parseFileForTest(t, `package x
func helper() int {
return 1
}
templ Box() {
<div></div>
}`)
gen := NewGenerator()
gen.SkipImports = true
if _, err := gen.Generate(file, "test.gsx"); err != nil {
t.Fatalf("generate failed: %v", err)
}
sm := gen.GetSourceMap()
if sm == nil {
t.Fatal("GetSourceMap returned nil")
}
if len(sm.Mappings) == 0 {
t.Fatal("source map has no mappings for passthrough Go code")
}
}
func TestGenerator_FindFirstContentLineAfterImports(t *testing.T) {
type tc struct {
code string
want int
}
tests := map[string]tc{
"block import": {
code: "package x\n\nimport (\n\t\"fmt\"\n)\n\nfunc main() {}\n",
want: 6,
},
"single line import": {
code: "package x\n\nimport \"fmt\"\n\nfunc main() {}\n",
want: 4,
},
"no content after imports": {
code: "package x\n\nimport \"fmt\"\n\n",
want: 5,
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
got := findFirstContentLineAfterImports([]byte(tt.code))
if got != tt.want {
t.Errorf("findFirstContentLineAfterImports = %d, want %d", got, tt.want)
}
})
}
}
func TestGenerator_ViewTypeName(t *testing.T) {
type tc struct {
component string
want string
}
tests := map[string]tc{
"local component": {component: "Badge", want: "*BadgeView"},
"package qualified": {component: "pkg.Badge", want: "*pkg.BadgeView"},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if got := viewTypeName(tt.component); got != tt.want {
t.Errorf("viewTypeName(%q) = %q, want %q", tt.component, got, tt.want)
}
})
}
}
func TestGenerator_TextExpr(t *testing.T) {
type tc struct {
code string
want string
}
tests := map[string]tc{
"integer literal": {code: "42", want: "fmt.Sprint(42)"},
"float literal": {code: "3.14", want: "fmt.Sprint(3.14)"},
"negative literal": {code: "-1", want: "fmt.Sprint(-1)"},
"leading dot float": {code: ".5", want: "fmt.Sprint(.5)"},
"hex literal": {code: "0xFF", want: "fmt.Sprint(0xFF)"},
"identifier untouched": {code: "name", want: "name"},
"empty string": {code: "", want: ""},
"bare minus": {code: "-", want: "-"},
"whitespace only": {code: " ", want: " "},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
if got := textExpr(tt.code); got != tt.want {
t.Errorf("textExpr(%q) = %q, want %q", tt.code, got, tt.want)
}
})
}
}
func TestGenerator_StateTextBindings(t *testing.T) {
type tc struct {
input string
wantContains []string
wantNotContains []string
}
tests := map[string]tc{
"single state var binds SetText": {
input: `package x
import "fmt"
templ Counter() {
count := tui.NewState(0)
<div>{fmt.Sprintf("count: %d", count.Get())}</div>
}`,
wantContains: []string{
"// State bindings",
"count.Bind(func(_ int) {",
`__tui_1.SetText(fmt.Sprintf("count: %d", count.Get()))`,
},
},
"multiple state vars share update func": {
input: `package x
import "fmt"
templ Counter() {
count := tui.NewState(0)
name := tui.NewState("hi")
<div>{fmt.Sprintf("%s: %d", name.Get(), count.Get())}</div>
}`,
wantContains: []string{
"__update___tui_1 := func() { __tui_1.SetText(",
"count.Bind(func(_ int) { __update___tui_1() })",
"name.Bind(func(_ string) { __update___tui_1() })",
},
},
"dynamic class binding has no setter": {
input: `package x
templ Styled() {
count := tui.NewState(0)
<div class={count.Get()}></div>
}`,
wantContains: []string{
"// State bindings",
},
wantNotContains: []string{
".Bind(",
"SetClass",
},
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
output, err := parseAndGenerateSkipImports("test.gsx", tt.input)
if err != nil {
t.Fatalf("generation failed: %v", err)
}
code := string(output)
for _, want := range tt.wantContains {
if !strings.Contains(code, want) {
t.Errorf("output missing %q\nGot:\n%s", want, code)
}
}
for _, notWant := range tt.wantNotContains {
if strings.Contains(code, notWant) {
t.Errorf("output contains unexpected %q\nGot:\n%s", notWant, code)
}
}
})
}
}
|