Test that t.snapshot.skip() prevents updating snapshots

Author: ninevra

test/snapshot-updates/fixtures/contains-skip-assertion.js

@@ -0,0 +1,10 @@
+const test = require('ava');
+
+test('always failing snapshot', t => {
+	t.snapshot(Date.now());
+});
+
+test('skipped assertion', t => {
+	t.snapshot.skip(Date.now()); // eslint-disable-line ava/no-skip-assert
+	t.pass();
+});

test/snapshot-updates/fixtures/contains-skip-assertion.js.md

@@ -0,0 +1,11 @@
+# Snapshot report for `contains-skip-assertion.js`
+
+The actual snapshot is saved in `contains-skip-assertion.js.snap`.
+
+Generated by [AVA](https://avajs.dev).
+
+## always failing snapshot
+
+> Snapshot 1
+
+    1607992742963

test/snapshot-updates/fixtures/contains-skip-assertion.js.snap

@@ -66,3 +66,31 @@ Generated by [AVA](https://avajs.dev).
 > Snapshot 1
 
     'Snapshots cannot be updated when selecting specific tests by their line number.'
+
+## cannot update snapshots when skipping snapshot assertions
+
+> failed tests
+
+    [
+      {
+        file: 'contains-skip-assertion.js',
+        title: 'skipped assertion',
+      },
+    ]
+
+> passed tests
+
+    [
+      {
+        file: 'contains-skip-assertion.js',
+        title: 'always failing snapshot',
+      },
+    ]
+
+> files where snapshots could not be updated
+
+    [
+      {
+        file: 'contains-skip-assertion.js',
+      },
+    ]

test/snapshot-updates/snapshots/test.js.md

@@ -24,3 +24,10 @@ test('cannot update snapshots when selecting tests by line number', async t => {
 	const result = await t.throwsAsync(exec.fixture(['contains-skip.js:4', '-u']));
 	t.snapshot(exec.cleanOutput(result.stderr));
 });
+
+test('cannot update snapshots when skipping snapshot assertions', async t => {
+	const result = await t.throwsAsync(exec.fixture(['contains-skip-assertion.js', '-u']));
+	t.snapshot(result.stats.failed, 'failed tests');
+	t.snapshot(result.stats.passed, 'passed tests');
+	t.snapshot(result.stats.unsavedSnapshots, 'files where snapshots could not be updated');
+});