From 5b89f0e0b8f7b62fe72b4c892f5ab45041ba9e03 Mon Sep 17 00:00:00 2001
From: Michael Nebel <michaelnebel@github.com>
Date: Tue, 11 Jan 2022 12:01:40 +0100
Subject: [PATCH 1/2] C#: Add example of const interpolated string.

---
 .../library-tests/csharp10/ConstInterpolatedString.cs     | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 csharp/ql/test/library-tests/csharp10/ConstInterpolatedString.cs

diff --git a/csharp/ql/test/library-tests/csharp10/ConstInterpolatedString.cs b/csharp/ql/test/library-tests/csharp10/ConstInterpolatedString.cs
new file mode 100644
index 00000000000..1dba25d5182
--- /dev/null
+++ b/csharp/ql/test/library-tests/csharp10/ConstInterpolatedString.cs
@@ -0,0 +1,8 @@
+using System;
+
+public class MyConstStringInterpolationClass
+{
+    public const string hello = "Hello";
+    public const string helloWorld = $"{hello} World";
+    public const string reallyHelloWorld = $"Really {helloWorld}";
+}
\ No newline at end of file

From 1d8f8f79bb61799768ab037042f4bdabc7dc2472 Mon Sep 17 00:00:00 2001
From: Michael Nebel <michaelnebel@github.com>
Date: Tue, 11 Jan 2022 12:02:07 +0100
Subject: [PATCH 2/2] C#: Add const interpolated string test case.

---
 .../csharp10/constInterpolatedString.expected              | 6 ++++++
 .../test/library-tests/csharp10/constInterpolatedString.ql | 7 +++++++
 2 files changed, 13 insertions(+)
 create mode 100644 csharp/ql/test/library-tests/csharp10/constInterpolatedString.expected
 create mode 100644 csharp/ql/test/library-tests/csharp10/constInterpolatedString.ql

diff --git a/csharp/ql/test/library-tests/csharp10/constInterpolatedString.expected b/csharp/ql/test/library-tests/csharp10/constInterpolatedString.expected
new file mode 100644
index 00000000000..849ded1bb57
--- /dev/null
+++ b/csharp/ql/test/library-tests/csharp10/constInterpolatedString.expected
@@ -0,0 +1,6 @@
+inserts
+| ConstInterpolatedString.cs:6:38:6:53 | $"..." | ConstInterpolatedString.cs:6:41:6:45 | access to constant hello |
+| ConstInterpolatedString.cs:7:44:7:65 | $"..." | ConstInterpolatedString.cs:7:54:7:63 | access to constant helloWorld |
+texts
+| ConstInterpolatedString.cs:6:38:6:53 | $"..." | ConstInterpolatedString.cs:6:47:6:52 | " World" |
+| ConstInterpolatedString.cs:7:44:7:65 | $"..." | ConstInterpolatedString.cs:7:46:7:52 | "Really " |
diff --git a/csharp/ql/test/library-tests/csharp10/constInterpolatedString.ql b/csharp/ql/test/library-tests/csharp10/constInterpolatedString.ql
new file mode 100644
index 00000000000..8f3ef221828
--- /dev/null
+++ b/csharp/ql/test/library-tests/csharp10/constInterpolatedString.ql
@@ -0,0 +1,7 @@
+import csharp
+
+query predicate inserts(InterpolatedStringExpr expr, Expr e) { expr.getAnInsert() = e }
+
+query predicate texts(InterpolatedStringExpr expr, StringLiteral literal) {
+  expr.getAText() = literal
+}