taler-typescript-core

commit 03c36d57c23f6d21bbfbe46910577a2960035761
parent 74de25129b1f7e219e7277596eba67d258f838dc
Author: Florian Dold <dold@taler.net>
Date:   Tue, 21 Jul 2026 20:01:39 +0200

util: test config write-back

Diffstat:
M
packages/taler-util/src/talerconfig.test.ts
 | 
38
++++++++++++++++++++++++++++++++++++++

1 file changed, 38 insertions(+), 0 deletions(-)
diff --git a/packages/taler-util/src/talerconfig.test.ts b/packages/taler-util/src/talerconfig.test.ts
@@ -356,3 +356,41 @@ test("@inline-secret@ still requires two arguments", (t) => {
     /requires two arguments/,
   );
 });
+
+test("write-back escapes newlines in values", (t) => {
+  // configuration.c rewrites an embedded newline to a backslash-n before
+  // writing, otherwise a value carrying one emits extra configuration lines.
+  const config = new Configuration();
+  config.setString("exchange", "base_url", "https://real/\n[evil]\nX = y");
+  const out = config.stringify();
+  assert.ok(!/\n\[evil\]/.test(out), `injected a section: ${out}`);
+  assert.strictEqual(
+    out,
+    "[exchange]\nbase_url = https://real/\\n[evil]\\nX = y\n\n",
+  );
+});
+
+test("write-back preserves values with significant whitespace", (t) => {
+  // A value only keeps its leading or trailing spaces if it is quoted, and
+  // the reader strips the quotes again.
+  const config = new Configuration();
+  config.setString("exchange", "padded", "  spaced  ");
+  const reloaded = new Configuration();
+  reloaded.loadFromString(config.stringify());
+  assert.strictEqual(
+    reloaded.getString("exchange", "padded").required(),
+    "  spaced  ",
+  );
+});
+
+test("write-back preserves the spelling of section and option names", (t) => {
+  // write() overwrites the user's own file, so it must not rewrite
+  // [exchange]/base_url as [EXCHANGE]/BASE_URL.  The C keeps the name as it
+  // was first seen.
+  const config = new Configuration();
+  config.loadFromString("[exchange]\nbase_url = https://real/\n");
+  assert.strictEqual(
+    config.stringify(),
+    "[exchange]\nbase_url = https://real/\n\n",
+  );
+});