wasi-tests: expect fd_allocate to always fail now.

rewrite the file_allocate test to just check for failure.

remove use of fd_allocate from fd_advise test, and remove test
configuration setting used for excluding use of fd_allocate on macos and
windows.

crates/test-programs/tests/wasm_tests/runtime/mod.rs

@@ -12,8 +12,6 @@ pub fn test_suite_environment() -> &'static [(&'static str, &'static str)] {
             ("ERRNO_MODE_WINDOWS", "1"),
             // Windows does not support dangling links or symlinks in the filesystem.
             ("NO_DANGLING_FILESYSTEM", "1"),
-            // Windows does not support fd_allocate.
-            ("NO_FD_ALLOCATE", "1"),
             // Windows does not support renaming a directory to an empty directory -
             // empty directory must be deleted.
             ("NO_RENAME_DIR_TO_EMPTY_DIR", "1"),
@@ -25,10 +23,6 @@ pub fn test_suite_environment() -> &'static [(&'static str, &'static str)] {
     }
     #[cfg(target_os = "macos")]
     {
-        &[
-            ("ERRNO_MODE_MACOS", "1"),
-            // MacOS does not support fd_allocate
-            ("NO_FD_ALLOCATE", "1"),
-        ]
+        &[("ERRNO_MODE_MACOS", "1")]
     }
 }

crates/test-programs/wasi-tests/src/bin/fd_advise.rs

@@ -1,5 +1,5 @@
 use std::{env, process};
-use wasi_tests::{open_scratch_directory, TESTCONFIG};
+use wasi_tests::open_scratch_directory;
 
 unsafe fn test_fd_advise(dir_fd: wasi::Fd) {
     // Create a file in the scratch directory.
@@ -40,14 +40,6 @@ unsafe fn test_fd_advise(dir_fd: wasi::Fd) {
     let stat = wasi::fd_filestat_get(file_fd).expect("failed to fdstat 3");
     assert_eq!(stat.size, 100, "file size should be 100");
 
-    if TESTCONFIG.support_fd_allocate() {
-        // Use fd_allocate to expand size to 200:
-        wasi::fd_allocate(file_fd, 100, 100).expect("allocating size");
-
-        let stat = wasi::fd_filestat_get(file_fd).expect("failed to fdstat 3");
-        assert_eq!(stat.size, 200, "file size should be 200");
-    }
-
     wasi::fd_close(file_fd).expect("failed to close");
     wasi::path_unlink_file(dir_fd, "file").expect("failed to unlink");
 }

crates/test-programs/wasi-tests/src/bin/file_allocate.rs

@@ -1,5 +1,5 @@
 use std::{env, process};
-use wasi_tests::{open_scratch_directory, TESTCONFIG};
+use wasi_tests::open_scratch_directory;
 
 unsafe fn test_file_allocate(dir_fd: wasi::Fd) {
     // Create a file in the scratch directory.
@@ -25,22 +25,18 @@ unsafe fn test_file_allocate(dir_fd: wasi::Fd) {
     let mut stat = wasi::fd_filestat_get(file_fd).expect("reading file stats");
     assert_eq!(stat.size, 0, "file size should be 0");
 
-    if TESTCONFIG.support_fd_allocate() {
-        // Allocate some size
-        wasi::fd_allocate(file_fd, 0, 100).expect("allocating size");
-        stat = wasi::fd_filestat_get(file_fd).expect("reading file stats");
-        assert_eq!(stat.size, 100, "file size should be 100");
+    let err = wasi::fd_allocate(file_fd, 0, 100)
+        .err()
+        .expect("fd_allocate must fail");
+    assert_eq!(
+        err,
+        wasi::ERRNO_NOTSUP,
+        "fd_allocate should fail with NOTSUP"
+    );
 
-        // Allocate should not modify if less than current size
-        wasi::fd_allocate(file_fd, 10, 10).expect("allocating size less than current size");
-        stat = wasi::fd_filestat_get(file_fd).expect("reading file stats");
-        assert_eq!(stat.size, 100, "file size should remain unchanged at 100");
+    stat = wasi::fd_filestat_get(file_fd).expect("reading file stats");
+    assert_eq!(stat.size, 0, "file size should still be 0");
 
-        // Allocate should modify if offset+len > current_len
-        wasi::fd_allocate(file_fd, 90, 20).expect("allocating size larger than current size");
-        stat = wasi::fd_filestat_get(file_fd).expect("reading file stats");
-        assert_eq!(stat.size, 110, "file size should increase from 100 to 110");
-    }
     wasi::fd_close(file_fd).expect("closing a file");
     wasi::path_unlink_file(dir_fd, "file").expect("removing a file");
 }

crates/test-programs/wasi-tests/src/config.rs

@@ -1,7 +1,6 @@
 pub struct TestConfig {
     errno_mode: ErrnoMode,
     no_dangling_filesystem: bool,
-    no_fd_allocate: bool,
     no_rename_dir_to_empty_dir: bool,
     no_fdflags_sync_support: bool,
 }
@@ -25,13 +24,11 @@ impl TestConfig {
             ErrnoMode::Permissive
         };
         let no_dangling_filesystem = std::env::var("NO_DANGLING_FILESYSTEM").is_ok();
-        let no_fd_allocate = std::env::var("NO_FD_ALLOCATE").is_ok();
         let no_rename_dir_to_empty_dir = std::env::var("NO_RENAME_DIR_TO_EMPTY_DIR").is_ok();
         let no_fdflags_sync_support = std::env::var("NO_FDFLAGS_SYNC_SUPPORT").is_ok();
         TestConfig {
             errno_mode,
             no_dangling_filesystem,
-            no_fd_allocate,
             no_rename_dir_to_empty_dir,
             no_fdflags_sync_support,
         }
@@ -57,9 +54,6 @@ impl TestConfig {
     pub fn support_dangling_filesystem(&self) -> bool {
         !self.no_dangling_filesystem
     }
-    pub fn support_fd_allocate(&self) -> bool {
-        !self.no_fd_allocate
-    }
     pub fn support_rename_dir_to_empty_dir(&self) -> bool {
         !self.no_rename_dir_to_empty_dir
     }