From 7d5bd45ab22582220fcebdde8e9d11ec6f089338 Mon Sep 17 00:00:00 2001
From: "Sven A. Schmidt" <sas@finestructure.co>
Date: Thu, 12 Oct 2023 13:00:45 +0200
Subject: [PATCH] Add test_environment_isolation

---
 Tests/ShellOutTests/ShellOutTests.swift | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Tests/ShellOutTests/ShellOutTests.swift b/Tests/ShellOutTests/ShellOutTests.swift
index 6aa8107..6e68845 100644
--- a/Tests/ShellOutTests/ShellOutTests.swift
+++ b/Tests/ShellOutTests/ShellOutTests.swift
@@ -267,6 +267,20 @@ final class ShellOutTests: XCTestCase {
             v0.1.0
             """)
     }
+
+    func test_environment_isolation() async throws {
+        setenv("TOKEN", "secret", 1)
+        defer { unsetenv("TOKEN") }
+
+        await XCTAssertEqualAsync(
+            try await shellOut(to: "bash", arguments: ["-c", "echo $TOKEN"],
+                               environment: ProcessInfo.processInfo.environment).stdout, "secret"
+        )
+        await XCTAssertEqualAsync(
+            try await shellOut(to: "bash", arguments: ["-c", "echo $TOKEN"],
+                               environment: [:]).stdout, ""
+        )
+    }
 }
 
 extension ShellOutTests {