readme

Author: Eric Swanson

README.md

@@ -6,18 +6,18 @@ These tests use dfx to stand up and interact with a local Internet Computer inst
 To ensure test isolation, they run in a temporary HOME directory and 
 **cannot use the dfx shim from dfxvm**.
 
-To run the tests:
+To run the tests, it's necessary to set the ICPTEST_DFX_PATH environment variable
+to a valid dfx path. Here is one way to do this:
 
 ```
-# Ensure dfx is installed
+# Ensure dfx is installed and the cache is populated
 dfx cache install
 
 # Export the path to the actual dfx binary (not the shim)
 export ICPTEST_DFX_PATH="$(dfx cache show)/dfx"
 
-# Run tests (may include #[ignore] tests depending on setup)
+# Run tests
 cargo test
 ```
 
-If ICPTEST_DFX_PATH is not set, tests that depend on dfx will be skipped or marked as ignored.
-
+If ICPTEST_DFX_PATH is not set, tests that depend on dfx will fail.