Fix venv invocation on windows

Author: benbrandt

tests/bindings.rs

@@ -143,13 +143,13 @@ where
         .assert()
         .success();
 
-    Command::new("./.venv/bin/pip")
+    Command::new(venv_executable_path("pip"))
         .current_dir(path)
         .args(["install", "mypy"])
         .assert()
         .success();
 
-    Command::new("./.venv/bin/mypy")
+    Command::new(venv_executable_path("mypy"))
         .current_dir(path)
         .args(args)
         .assert()
@@ -159,6 +159,13 @@ where
         )
 }
 
+fn venv_executable_path(executable: &str) -> String {
+    format!(
+        "./.venv/bin/{executable}{}",
+        if cfg!(windows) { ".exe" } else { "" }
+    )
+}
+
 fn install_numpy(path: &Path) {
     Command::new("curl")
         .current_dir(path)

tests/componentize.rs

@@ -190,18 +190,18 @@ fn sandbox_example() -> anyhow::Result<()> {
         .stdout("Component built successfully\n");
 
     Command::new("python3")
-        .current_dir(dir.path())
+        .current_dir(&path)
         .args(["-m", "venv", ".venv"])
         .assert()
         .success();
 
-    Command::new("./.venv/bin/pip")
-        .current_dir(dir.path())
+    Command::new(venv_executable_path("pip"))
+        .current_dir(&path)
         .args(["install", "wasmtime"])
         .assert()
         .success();
 
-    Command::new("../.venv/bin/python")
+    Command::new(venv_executable_path("python"))
         .current_dir(&path)
         .args([
             "-m",
@@ -213,7 +213,7 @@ fn sandbox_example() -> anyhow::Result<()> {
         .assert()
         .success();
 
-    Command::new("../.venv/bin/python")
+    Command::new(venv_executable_path("python"))
         .current_dir(&path)
         .args(["host.py", "2 + 2"])
         .assert()
@@ -298,3 +298,10 @@ fn install_numpy(path: &Path) {
         .assert()
         .success();
 }
+
+fn venv_executable_path(executable: &str) -> String {
+    format!(
+        "./.venv/bin/{executable}{}",
+        if cfg!(windows) { ".exe" } else { "" }
+    )
+}