diff --git a/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-empty/expected.css b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-empty/expected.css
new file mode 100644
index 0000000000..50ad637d57
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-empty/expected.css
@@ -0,0 +1,9 @@
+c.svelte-xyz {
+    color: red;
+
+    /* (empty) b.svelte-xyz & {
+
+    }*/
+
+    color: black;
+}
diff --git a/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-empty/input.svelte b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-empty/input.svelte
new file mode 100644
index 0000000000..bb88e2012d
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-empty/input.svelte
@@ -0,0 +1,15 @@
+<b>
+    <c/>
+</b>
+<style>
+c {
+    color: red;
+
+    b & {
+
+    }
+
+    color: black;
+}
+
+</style>
\ No newline at end of file
diff --git a/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-unused-combinator/expected.css b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-unused-combinator/expected.css
new file mode 100644
index 0000000000..50060c1aab
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-unused-combinator/expected.css
@@ -0,0 +1,7 @@
+c.svelte-xyz {
+    color: red;
+
+    /* (unused) b + & {
+        color: red;
+    }*/
+}
diff --git a/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-unused-combinator/input.svelte b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-unused-combinator/input.svelte
new file mode 100644
index 0000000000..0504532aa8
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-unused-combinator/input.svelte
@@ -0,0 +1,15 @@
+<c></c>
+<div>
+    <b>
+    </b>
+</div>
+<style>
+c {
+    color: red;
+
+    b + & {
+        color: red;
+    }
+}
+
+</style>
\ No newline at end of file
diff --git a/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-with-combinator-prefix/expected.css b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-with-combinator-prefix/expected.css
new file mode 100644
index 0000000000..fb3721185a
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-with-combinator-prefix/expected.css
@@ -0,0 +1,9 @@
+c.svelte-xyz {
+    color: red;
+
+    b.svelte-xyz + & {
+        color: yellow;
+    }
+
+    color: black;
+}
diff --git a/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-with-combinator-prefix/input.svelte b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-with-combinator-prefix/input.svelte
new file mode 100644
index 0000000000..ae1be9dce2
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-ampersand-suffix-with-combinator-prefix/input.svelte
@@ -0,0 +1,17 @@
+<b>
+</b>
+<c>
+
+</c>
+<style>
+c {
+    color: red;
+
+    b + & {
+        color: yellow;
+    }
+
+    color: black;
+}
+
+</style>
\ No newline at end of file
diff --git a/packages/svelte/tests/css/samples/nested-css-empty-child/expected.css b/packages/svelte/tests/css/samples/nested-css-empty-child/expected.css
new file mode 100644
index 0000000000..019bd61efe
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-empty-child/expected.css
@@ -0,0 +1,6 @@
+b.svelte-xyz {
+    color: red;
+    /* (empty) x.svelte-xyz {
+
+    }*/
+}
\ No newline at end of file
diff --git a/packages/svelte/tests/css/samples/nested-css-empty-child/input.svelte b/packages/svelte/tests/css/samples/nested-css-empty-child/input.svelte
new file mode 100644
index 0000000000..03a1339a7c
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-empty-child/input.svelte
@@ -0,0 +1,11 @@
+<b>
+    <x/>
+</b>
+<style>
+b {
+    color: red;
+    x {
+
+    }
+}
+</style>
\ No newline at end of file
diff --git a/packages/svelte/tests/css/samples/nested-css-empty-parent/expected.css b/packages/svelte/tests/css/samples/nested-css-empty-parent/expected.css
new file mode 100644
index 0000000000..02f77ae451
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-empty-parent/expected.css
@@ -0,0 +1,5 @@
+b.svelte-xyz {
+    x.svelte-xyz {
+        color: yellow;
+    }
+}
\ No newline at end of file
diff --git a/packages/svelte/tests/css/samples/nested-css-empty-parent/input.svelte b/packages/svelte/tests/css/samples/nested-css-empty-parent/input.svelte
new file mode 100644
index 0000000000..90d26c419a
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-empty-parent/input.svelte
@@ -0,0 +1,10 @@
+<b>
+    <x/>
+</b>
+<style>
+b {
+    x {
+        color: yellow;
+    }
+}
+</style>
\ No newline at end of file
diff --git a/packages/svelte/tests/css/samples/nested-css-unused-child/expected.css b/packages/svelte/tests/css/samples/nested-css-unused-child/expected.css
new file mode 100644
index 0000000000..99741c1c58
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-unused-child/expected.css
@@ -0,0 +1,9 @@
+c.svelte-xyz {
+    color: red;
+
+    /* (unused) d {
+        color: yellow;
+    }*/
+
+    color: black;
+}
diff --git a/packages/svelte/tests/css/samples/nested-css-unused-child/input.svelte b/packages/svelte/tests/css/samples/nested-css-unused-child/input.svelte
new file mode 100644
index 0000000000..7dcfdf1dcd
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-unused-child/input.svelte
@@ -0,0 +1,15 @@
+<c>
+
+</c>
+<style>
+c {
+    color: red;
+
+    d {
+        color: yellow;
+    }
+
+    color: black;
+}
+
+</style>
\ No newline at end of file
diff --git a/packages/svelte/tests/css/samples/nested-css-unused-parent/expected.css b/packages/svelte/tests/css/samples/nested-css-unused-parent/expected.css
new file mode 100644
index 0000000000..c9867eca17
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-unused-parent/expected.css
@@ -0,0 +1,9 @@
+/* (unused) a*/ b.svelte-xyz {
+    color: red;
+
+    x.svelte-xyz {
+        color: yellow;
+    }
+
+    color: black;
+}
diff --git a/packages/svelte/tests/css/samples/nested-css-unused-parent/input.svelte b/packages/svelte/tests/css/samples/nested-css-unused-parent/input.svelte
new file mode 100644
index 0000000000..7940ec195c
--- /dev/null
+++ b/packages/svelte/tests/css/samples/nested-css-unused-parent/input.svelte
@@ -0,0 +1,15 @@
+<b>
+    <x/>
+</b>
+<style>
+a, b {
+    color: red;
+
+    x {
+        color: yellow;
+    }
+
+    color: black;
+}
+
+</style>
\ No newline at end of file