go-html/cmd/wasm/main_test.go
Virgil 5784b76990
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fix(wasm): harden renderToString arg handling
Add type guards for variant and locale inputs at the WASM boundary and a js+wasm integration test suite for renderToString behavior.

Co-Authored-By: Virgil <virgil@lethean.io>
2026-04-03 07:51:45 +00:00

55 lines
1.3 KiB
Go

//go:build js && wasm
package main
import (
"testing"
"syscall/js"
)
func TestRenderToString_Good(t *testing.T) {
gotAny := renderToString(js.Value{}, []js.Value{
js.ValueOf("C"),
js.ValueOf("en-GB"),
js.ValueOf(map[string]any{"C": "<strong>hello</strong>"}),
})
got, ok := gotAny.(string)
if !ok {
t.Fatalf("renderToString should return string, got %T", gotAny)
}
want := `<main role="main" data-block="C-0"><strong>hello</strong></main>`
if got != want {
t.Fatalf("renderToString(...) = %q, want %q", got, want)
}
}
func TestRenderToString_VariantTypeGuard(t *testing.T) {
if got := renderToString(js.Value{}, []js.Value{js.ValueOf(123)}); got != "" {
t.Fatalf("non-string variant should be empty, got %q", got)
}
if got := renderToString(js.Value{}, []js.Value{}); got != "" {
t.Fatalf("missing variant should be empty, got %q", got)
}
}
func TestRenderToString_LocaleTypeGuard(t *testing.T) {
gotAny := renderToString(js.Value{}, []js.Value{
js.ValueOf("C"),
js.ValueOf(123),
js.ValueOf(map[string]any{"C": "x"}),
})
got, ok := gotAny.(string)
if !ok {
t.Fatalf("renderToString should return string, got %T", gotAny)
}
want := `<main role="main" data-block="C-0">x</main>`
if got != want {
t.Fatalf("renderToString with non-string locale = %q, want %q", got, want)
}
}