test untested env functions

Author: Anton-4

ci/expect_scripts/env.exp

@@ -0,0 +1,63 @@
+#!/usr/bin/expect
+
+# uncomment line below for debugging
+# exp_internal 1
+
+set timeout 7
+
+source ./ci/expect_scripts/shared-code.exp
+
+spawn $env(TESTS_DIR)env
+
+expect "Testing Env module functions..." {
+    expect -re "Testing Env.cwd!:" {
+        # Match cwd path that has ArbitraryBytes with non-empty list of integers
+        # Use curly braces for the regex pattern to avoid Tcl interpretation of [ and ]
+        expect -re {cwd: \(@InternalPath \(ArbitraryBytes \[\d+(, \d+)*\]\)\)} {
+            
+            expect -re "Testing Env.exe_path!:" {
+                # Match exe_path with any valid format
+                expect -re {exe_path: \(@InternalPath \(.*\[\d+(, \d+)*\].*\)\)} {
+                    
+                    expect -re "Testing Env.platform!:" {
+                        # Match platform info with any arch and OS
+                        # Literal braces in regex need to be escaped: \{ and \}
+                        expect -re {Current platform:\{arch: \w+, os: \w+\}} {
+                            
+                            expect -re "Testing Env.dict!:" {
+                                # Match environment variables count as non-zero number
+                                expect -re {Environment variables count: (\d+)} {
+                                    set env_count $expect_out(1,string)
+                                    if {$env_count == 0} {
+                                        puts stderr "\nExpect script failed: environment variable count is zero."
+                                        exit 1
+                                    }
+                                    
+                                    # Match sample environment variables with non-empty strings
+                                    # Literal brackets [], parentheses (), and quotes "" need escaping or careful handling
+                                    expect -re {Sample environment variables:\[\("\w+", ".*"\)(, \("\w+", ".*"\))*\]} {
+                                        
+                                        expect -re "Testing Env.set_cwd!:" {
+                                            # Match changed directory path with non-empty list of integers
+                                            expect -re {Changed current directory to: \(@InternalPath \(ArbitraryBytes \[\d+(, \d+)*\]\)\)} {
+                                                
+                                                expect "All tests executed!" {
+                                                    expect eof {
+                                                        check_exit_and_segfault
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+puts stderr "\nExpect script failed: output was different from expected value."
+exit 1

flake.lock

@@ -3,7 +3,8 @@
 
   inputs = {
 
-    roc.url = "github:roc-lang/roc";
+    # TODO change this back once that commit is merged
+    roc.url = "github:roc-lang/roc/2e3a32d218f5404f4451cfe9997eaa95e75486cb";
 
     nixpkgs.follows = "roc/nixpkgs";
 

flake.nix

@@ -1,3 +1,4 @@
 sqlite
 utc
-url
+url
+env

tests/.gitignore

@@ -0,0 +1,54 @@
+app [main!] { pf: platform "../platform/main.roc" }
+
+import pf.Stdout
+import pf.Env
+import pf.Path
+import pf.Arg exposing [Arg]
+
+main! : List Arg => Result {} _
+main! = |_args|
+    Stdout.line!("Testing Env module functions...")?
+
+    Stdout.line!("\nTesting Env.cwd!:")?
+    cwd = Env.cwd!({})?
+    Stdout.line!("cwd: ${Inspect.to_str(cwd)}")?
+
+    Stdout.line!("\nTesting Env.exe_path!:")?
+    exe_path = Env.exe_path!({})?
+    Stdout.line!("exe_path: ${Inspect.to_str(exe_path)}")?
+
+    # Test Env.platform!
+    Stdout.line!("\nTesting Env.platform!:")?
+    platform = Env.platform!({})
+    Stdout.line!("Current platform:${Inspect.to_str(platform)}")?
+
+    # Test Env.dict!
+    Stdout.line!("\nTesting Env.dict!:")?
+    env_vars = Env.dict!({})
+    var_count = Dict.len(env_vars)
+    Stdout.line!("Environment variables count: ${Num.to_str(var_count)}")?
+    
+    some_env_vars = Dict.to_list(env_vars) |> List.take_first(3)
+    Stdout.line!("Sample environment variables:${Inspect.to_str(some_env_vars)}")?
+
+    # Test Env.set_cwd!
+    Stdout.line!("\nTesting Env.set_cwd!:")?
+    
+    # First get the current directory to restore it later
+    original_dir = Env.cwd!({})?
+    ls_list = Path.list_dir!(original_dir)?
+
+    dir_list =
+        ls_list
+        |> List.keep_if_try!(|path| Path.is_dir!(path))?
+
+    first_dir =
+        List.first(dir_list)?
+
+    Env.set_cwd!(first_dir)?
+    new_cwd = Env.cwd!({})?
+    Stdout.line!("Changed current directory to: ${Inspect.to_str(new_cwd)}")?
+
+    Stdout.line!("\nAll tests executed!")?
+
+    Ok({})