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|
package tuigen
import (
"strings"
"testing"
)
func TestGenerator_ComponentCallChildKinds(t *testing.T) {
type tc struct {
input string
wantContains []string
wantNotContains []string
}
tests := map[string]tc{
"element child appended to children slice": {
input: `package x
templ App() {
<div>
@Card() {
<div></div>
}
</div>
}`,
wantContains: []string{
"_children := []*tui.Element{}",
"_children = append(",
":= Card(",
},
},
"string literal child wrapped in text element": {
input: `package x
templ App() {
<div>
@Card() {
{"hello world"}
}
</div>
}`,
wantContains: []string{
`tui.New(tui.WithText("hello world"))`,
"_children = append(",
},
},
"go expr child wrapped in text element": {
input: `package x
templ App(msg string) {
<div>
@Card() {
{msg}
}
</div>
}`,
wantContains: []string{
"tui.New(tui.WithText(msg))",
"_children = append(",
},
},
"nested component call child appends Root": {
input: `package x
templ App() {
<div>
@Card() {
@Badge("a")
}
</div>
}`,
wantContains: []string{
`:= Badge("a")`,
".Root)",
},
},
"let binding child appended by name": {
input: `package x
templ App() {
<div>
@Card() {
lbl := <span>hi</span>
}
</div>
}`,
wantContains: []string{
"lbl := tui.New(",
", lbl)",
},
},
"for loop child uses slice append": {
input: `package x
templ App(items []string) {
<div>
@Card() {
for i, item := range items {
<span>{item}</span>
}
}
</div>
}`,
wantContains: []string{
"for i, item := range items {",
"_ = i",
"tui.New(",
"_children = append(",
},
},
"for loop child with underscore index gets synthetic index": {
input: `package x
templ App(items []string) {
<div>
@Card() {
for _, item := range items {
<span>{item}</span>
}
}
</div>
}`,
wantContains: []string{
"for __idx_0, item := range items {",
"_ = __idx_0",
},
},
"if else child appends conditionally": {
input: `package x
templ App(show bool) {
<div>
@Card() {
if show {
<span>yes</span>
} else {
<span>no</span>
}
}
</div>
}`,
wantContains: []string{
"if show {",
"} else {",
`tui.WithText("yes")`,
`tui.WithText("no")`,
"_children = append(",
},
},
"else if chain in component children": {
input: `package x
templ App(n int) {
<div>
@Card() {
if n == 0 {
<span>zero</span>
} else if n == 1 {
<span>one</span>
} else {
<span>many</span>
}
}
</div>
}`,
wantContains: []string{
"if n == 0 {",
"} else if n == 1 {",
`tui.WithText("many")`,
},
},
"nested control flow inside component children": {
input: `package x
templ App(items []string, show bool) {
<div>
@Card() {
for _, item := range items {
if show {
<span>{item}</span>
}
}
if show {
for _, item := range items {
<span>{item}</span>
}
}
}
</div>
}`,
wantContains: []string{
"for __idx_0, item := range items {",
"if show {",
"_children = append(",
},
},
"component call and let binding inside if child": {
input: `package x
templ App(show bool) {
<div>
@Card() {
if show {
@Badge("b")
lbl := <span>x</span>
} else {
@Badge("c")
other := <span>y</span>
}
}
</div>
}`,
wantContains: []string{
`= Badge("b")`,
`= Badge("c")`,
", lbl)",
", other)",
},
},
"component call inside for loop child appends Root": {
input: `package x
templ App(items []string) {
<div>
@Card() {
for _, item := range items {
@Badge(item)
}
}
</div>
}`,
wantContains: []string{
"= Badge(item)",
".Root)",
},
},
"go expr inside for loop child": {
input: `package x
templ App(items []string) {
<div>
@Card() {
for _, item := range items {
{item}
}
}
</div>
}`,
wantContains: []string{
"tui.New(tui.WithText(item))",
},
},
"call with args and children combines both": {
input: `package x
templ App(title string) {
<div>
@Card(title) {
<span>body</span>
}
</div>
}`,
wantContains: []string{
"Card(title, __tui_",
"_children)",
},
},
}
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)
}
}
})
}
}
func TestGenerator_StructMountChildren(t *testing.T) {
type tc struct {
input string
wantContains []string
}
tests := map[string]tc{
"struct mount with element and text children": {
input: `package x
type shell struct{}
templ (c *shell) Render() {
<div>
@Sidebar() {
<span>nav</span>
{"plain text"}
}
</div>
}`,
wantContains: []string{
"app.Mount(c, ",
"return Sidebar(__tui_",
"_children)",
`tui.New(tui.WithText("plain text"))`,
},
},
"struct mount with for and if children": {
input: `package x
type shell struct{}
templ (c *shell) Render() {
<div>
@Sidebar() {
for _, item := range c.items {
<span>{item}</span>
}
if c.open {
<span>open</span>
}
}
</div>
}`,
wantContains: []string{
"app.Mount(c, ",
"for __idx_0, item := range c.items {",
"if c.open {",
"_children = append(",
},
},
"struct mount with nested call and let binding children": {
input: `package x
type shell struct{}
templ (c *shell) Render() {
<div>
@Sidebar() {
@Footer()
lbl := <span>tag</span>
{c.title}
}
</div>
}`,
wantContains: []string{
"app.Mount(c, ",
"return Footer()",
", lbl)",
"tui.New(tui.WithText(c.title))",
},
},
"struct mount with args appends children to args": {
input: `package x
type shell struct{}
templ (c *shell) Render() {
<div>
@Sidebar(c.title) {
<span>nav</span>
}
</div>
}`,
wantContains: []string{
"return Sidebar(c.title, __tui_",
},
},
"struct mount inside for loop uses runtime index expr": {
input: `package x
type shell struct{}
templ (c *shell) Render() {
<div>
for i, item := range c.items {
@Sidebar(item)
}
</div>
}`,
wantContains: []string{
"app.Mount(c, tui.MountKey(0, i), func() tui.Component {",
"return Sidebar(item)",
},
},
}
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)
}
}
})
}
}
func TestGenerator_ComponentExpr(t *testing.T) {
type tc struct {
input string
wantContains []string
}
tests := map[string]tc{
"component expr as element child": {
input: `package x
type shell struct{}
templ (c *shell) Render() {
<div>
@c.editor
</div>
}`,
wantContains: []string{
":= c.editor.Render(app)",
".AddChild(__tui_",
},
},
"component expr inside if statement": {
input: `package x
type shell struct{}
templ (c *shell) Render() {
<div>
if c.open {
@c.editor
}
</div>
}`,
wantContains: []string{
"if c.open {",
":= c.editor.Render(app)",
},
},
"component expr inside for loop": {
input: `package x
type shell struct{}
templ (c *shell) Render() {
<div>
for _, p := range c.panes {
@c.editor
}
</div>
}`,
wantContains: []string{
"for __idx_0, p := range c.panes {",
":= c.editor.Render(app)",
},
},
}
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)
}
}
})
}
}
func TestGenerator_ChildrenSlotInMethodTempl(t *testing.T) {
input := `package x
type shell struct {
children []*tui.Element
}
templ (c *shell) Render() {
<div>
{children...}
</div>
}`
output, err := parseAndGenerateSkipImports("test.gsx", input)
if err != nil {
t.Fatalf("generation failed: %v", err)
}
code := string(output)
if !strings.Contains(code, "for _, __child := range c.children {") {
t.Errorf("method templ children slot should range over receiver children\nGot:\n%s", code)
}
if !strings.Contains(code, ".AddChild(__child)") {
t.Errorf("children slot should add each child\nGot:\n%s", code)
}
}
func TestGenerator_RawGoExprChildrenViaAnalyzer(t *testing.T) {
type tc struct {
input string
wantContains []string
wantNotContains []string
}
tests := map[string]tc{
"let binding referenced as element child": {
input: `package x
templ App() {
label := <span>hi</span>
<div>{label}</div>
}`,
wantContains: []string{
"label := tui.New(",
".AddChild(label)",
},
wantNotContains: []string{
"tui.New(tui.WithText(label))",
},
},
"let binding referenced inside component call children": {
input: `package x
templ Card(children []*tui.Element) {
<div>{children...}</div>
}
templ App() {
label := <span>hi</span>
<div>
@Card() {
{label}
}
</div>
}`,
wantContains: []string{
"_children = append(",
", label)",
},
},
"let binding referenced inside if body": {
input: `package x
templ App(show bool) {
label := <span>hi</span>
<div>
if show {
{label}
}
</div>
}`,
wantContains: []string{
"if show {",
".AddChild(label)",
},
},
}
for name, tt := range tests {
t.Run(name, func(t *testing.T) {
code := parseAnalyzeGenerate(t, tt.input)
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)
}
}
})
}
}
func TestGenerator_BodyNodesInsideIf(t *testing.T) {
type tc struct {
input string
wantContains []string
}
tests := map[string]tc{
"go expr inside if": {
input: `package x
templ App(show bool, msg string) {
<div>
if show {
{msg}
}
</div>
}`,
wantContains: []string{
"tui.New(tui.WithText(msg))",
},
},
"component call inside if": {
input: `package x
templ App(show bool) {
<div>
if show {
@Badge("x")
}
</div>
}`,
wantContains: []string{
`= Badge("x")`,
".AddChild(",
},
},
"let binding inside if": {
input: `package x
templ App(show bool) {
<div>
if show {
lbl := <span>a</span>
}
</div>
}`,
wantContains: []string{
"lbl := tui.New(",
},
},
"nested for inside if": {
input: `package x
templ App(show bool, items []string) {
<div>
if show {
for _, item := range items {
<span>{item}</span>
}
}
</div>
}`,
wantContains: []string{
"if show {",
"for __idx_0, item := range items {",
},
},
}
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)
}
}
})
}
}
|