backup engine internals - streaming, timeouts, typed snapshot layout, volume keys, route guards

src/lib/utils/backup-test-summary.ts

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+/**
+ * Pure tally + summary for the "Test all destinations" action. A destination test
+ * has three outcomes, not two: a reachable-but-uninitialized repo is `needs_init`,
+ * NOT a failure. Kept dependency-free so it's unit-testable without the DOM.
+ */
+
+export type TestOutcome = 'success' | 'needs_init' | 'failed';
+
+export interface TestCounts {
+	passed: number;
+	failed: number;
+	needsInit: number;
+}
+
+/** Count each three-way test outcome. Anything not 'success'/'needs_init' is a failure. */
+export function summarizeTestResults(outcomes: TestOutcome[]): TestCounts {
+	const counts: TestCounts = { passed: 0, failed: 0, needsInit: 0 };
+	for (const o of outcomes) {
+		if (o === 'success') counts.passed++;
+		else if (o === 'needs_init') counts.needsInit++;
+		else counts.failed++;
+	}
+	return counts;
+}
+
+/**
+ * Toast text + severity for a tally. Real failures make it an error; needs-init
+ * without failures is a warning (action needed, but nothing is broken); all-pass
+ * is a success.
+ */
+export function formatTestSummary(counts: TestCounts): {
+	text: string;
+	severity: 'success' | 'warning' | 'error';
+} {
+	const { passed, failed, needsInit } = counts;
+	const parts: string[] = [`${passed} passed`];
+	if (failed > 0) parts.push(`${failed} failed`);
+	if (needsInit > 0) parts.push(`${needsInit} need init`);
+
+	if (failed > 0) return { text: parts.join(', '), severity: 'error' };
+	if (needsInit > 0) return { text: parts.join(', '), severity: 'warning' };
+	return { text: `All ${passed} destinations tested & stats collected`, severity: 'success' };
+}