Replace 'echo "$foo"' with call to shell script.

Signed-off-by: Felix Fontein <[email protected]>

functional-tests/src/lib.rs

@@ -813,10 +813,17 @@ bar: |-
                 .success(),
             "sops didn't exit successfully"
         );
+        let print_foo = prepare_temp_file(
+            "print_foo.sh",
+            r#"#!/bin/sh
+echo "${foo}"
+"#
+            .as_bytes(),
+        );
         let output = Command::new(SOPS_BINARY_PATH)
             .arg("exec-env")
             .arg(file_path.clone())
-            .arg("echo \"$foo\"")
+            .arg(format!("/bin/sh {}", print_foo))
             .output()
             .expect("Error running sops");
         assert!(output.status.success(), "sops didn't exit successfully");
@@ -826,10 +833,17 @@ bar: |-
             String::from_utf8_lossy(&output.stderr)
         );
         assert_eq!(String::from_utf8_lossy(&output.stdout), "bar\n");
+        let print_bar = prepare_temp_file(
+            "print_bar.sh",
+            r#"#!/bin/sh
+echo "${bar}"
+"#
+            .as_bytes(),
+        );
         let output = Command::new(SOPS_BINARY_PATH)
             .arg("exec-env")
             .arg(file_path.clone())
-            .arg("echo \"$bar\"")
+            .arg(format!("/bin/sh {}", print_bar))
             .output()
             .expect("Error running sops");
         assert!(output.status.success(), "sops didn't exit successfully");