1 files changed, 5 insertions, 0 deletions
diff --git a/src/test/java/org/zwobble/hobgoblin/compiler/testing/TestProcessRunner.java b/src/test/java/org/zwobble/hobgoblin/compiler/testing/TestProcessRunner.java
index ba234d5..882519c 100644
--- a/src/test/java/org/zwobble/hobgoblin/compiler/testing/TestProcessRunner.java
+++ b/src/test/java/org/zwobble/hobgoblin/compiler/testing/TestProcessRunner.java
@@ -24,6 +24,11 @@ public class TestProcessRunner {
         return this;
     }
 
+    public TestProcessRunner addEnvVar(String name, String value) {
+        this.processBuilder.environment().put(name, value);
+        return this;
+    }
+
     /**
      * Run a process until it exits, capturing its stdout and stderr.
      */