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feat(coverage): write LCOV after 'wippy test' when WIPPY_COVERAGE is set #553

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feat(coverage): write LCOV after 'wippy test' when WIPPY_COVERAGE is set #553

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31 changes: 31 additions & 0 deletions cmd/wippy/cmd/run.go
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,7 @@ import (
"github.com/wippyai/runtime/cmd/internal/shutdown"
embedpkg "github.com/wippyai/runtime/service/fs/embed"
supervisorpkg "github.com/wippyai/runtime/system/supervisor"
lua "github.com/wippyai/go-lua"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
Expand Down Expand Up @@ -289,6 +290,9 @@ func runWithUseCase(cmd *cobra.Command, args []string, useCase string) error {
waitForShutdownSignal(sigChan, logger, nil)

exitCode := shutdown.Perform(ctx, loader, logger, silentLogs)
if lua.CoverageEnabled() {
dumpCoverage()
}
Comment on lines 292 to +295
if exitCode != 0 {
_ = logger.Sync()
os.Exit(exitCode)
Expand All @@ -297,6 +301,33 @@ func runWithUseCase(cmd *cobra.Command, args []string, useCase string) error {
return nil
}

// dumpCoverage writes an LCOV tracefile when WIPPY_COVERAGE is set. It runs both
// on a clean exit (return nil) and before os.Exit on a failing run, so coverage
// is captured even when tests fail. Configured via env:
//
// WIPPY_COVERAGE_FILE output path (default: coverage.info)
// WIPPY_COVERAGE_FILTER substring the source name must contain (default: all)
func dumpCoverage() {
prefix := os.Getenv("WIPPY_COVERAGE_FILTER")
filter := func(src string) bool {
return prefix == "" || strings.Contains(src, prefix)
}
path := os.Getenv("WIPPY_COVERAGE_FILE")
if path == "" {
path = "coverage.info"
}
if err := lua.WriteCoverageLCOV(path, filter); err != nil {
fmt.Fprintf(os.Stderr, "coverage: write failed: %v\n", err)
return
}
lf, lh := lua.CoverageSummary(filter)
pct := 0.0
if lf > 0 {
pct = float64(lh) / float64(lf) * 100
}
fmt.Fprintf(os.Stderr, "coverage: %d/%d lines (%.1f%%) filter=%q -> %s\n", lh, lf, pct, prefix, path)
}

// loadRuntimeConfig resolves the effective runtime configuration for run-like
// commands by merging:
// 1) config file/defaults,
Expand Down