33 lines
1.0 KiB
Go
33 lines
1.0 KiB
Go
//go:build dev
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package webbundler
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import (
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"strings"
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"testing"
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esbuild "github.com/evanw/esbuild/pkg/api"
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)
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// hmrClientJS is a hand-written JS blob served to the browser; a syntax slip in it
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// silently breaks every hot update, and the headless-browser smoke test is skipped
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// off Linux/macOS. Parse it as an ES module here so a bad edit fails at test time,
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// and assert the recompile-indicator hooks are wired.
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func TestHMRClientJSValid(t *testing.T) {
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res := esbuild.Transform(hmrClientJS, esbuild.TransformOptions{
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Loader: esbuild.LoaderJS,
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Format: esbuild.FormatESModule,
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LogLevel: esbuild.LogLevelSilent,
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})
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if len(res.Errors) > 0 {
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msgs := esbuild.FormatMessages(res.Errors, esbuild.FormatMessagesOptions{})
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t.Fatalf("HMR client JS failed to parse:\n%s", strings.Join(msgs, "\n"))
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}
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for _, want := range []string{"createHotContext", "hmrBusyStart", "hmrBusyEnd", "recompiling",
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"showErrorOverlay", "clearErrorOverlay", "errorEpoch"} {
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if !strings.Contains(hmrClientJS, want) {
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t.Errorf("HMR client missing %q", want)
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}
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}
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}
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