Revert "std.testing: add writeZigFile for TmpDir"

This reverts commit 7f13f5cd5f5a518638b15d7225eae2d88ec1efb5.

I'd like to review this one before it goes in. This is an awfully
specific API that I don't think belongs in std.testing. Also I don't
want any code snippets in doc strings. We have doctests for that.

2 files changed, 12 insertions, 42 deletions

diff --git a/lib/std/child_process.zig b/lib/std/child_process.zig
index f3c35dde2f..f2b978ba9f 100644
--- a/lib/std/child_process.zig
+++ b/lib/std/child_process.zig
@@ -1357,16 +1357,23 @@ test "build and call child_process" {
     var it = try std.process.argsWithAllocator(allocator);
     defer it.deinit(); // no-op unless WASI or Windows
     const testargs = try testing.getTestArgs(&it);
+
     var tmp = testing.tmpDir(.{ .no_follow = true }); // ie zig-cache/tmp/8DLgoSEqz593PAEE
     defer tmp.cleanup();
+    const tmpdirpath = try tmp.getFullPath(allocator);
+    defer allocator.free(tmpdirpath);
     const child_name = "child"; // no need for suffixes (.exe, .wasm) due to '-femit-bin'
-    const zigfile_path = try tmp.writeZigFile(allocator, childstr, child_name);
-    defer allocator.free(zigfile_path);
+    const suffix_zig = ".zig";
+    const child_path = try fs.path.join(allocator, &[_][]const u8{ tmpdirpath, child_name });
+    defer allocator.free(child_path);
+    const child_zig = try mem.concat(allocator, u8, &[_][]const u8{ child_path, suffix_zig });
+    defer allocator.free(child_zig);
+
+    try tmp.dir.writeFile("child.zig", childstr);
+    try testing.buildExe(testargs.zigexec, child_zig, child_path);
 
-    const binary = zigfile_path[0 .. zigfile_path.len - 4]; // '.zig' is 4 characters
-    try testing.buildExe(testargs.zigexec, zigfile_path, binary);
     // spawn compiled file as child_process with argument 'hello world' + expect success
-    const args = [_][]const u8{ binary, "hello world" };
+    const args = [_][]const u8{ child_path, "hello world" };
     var child_proc = try ChildProcess.init(&args, allocator);
     defer child_proc.deinit();
     const ret_val = try child_proc.spawnAndWait();
diff --git a/lib/std/testing.zig b/lib/std/testing.zig
index b90fbc2e4f..016e84acd8 100644
--- a/lib/std/testing.zig
+++ b/lib/std/testing.zig
@@ -374,43 +374,6 @@ pub const TmpDir = struct {
         self.parent_dir.close();
         self.* = undefined;
     }
-
-    /// Writes program string as zig file into tmp directory
-    /// Caller owns memory
-    ///
-    /// ```
-    /// const progstr = "pub fn main() void {}\n";
-    /// var it = try std.process.argsWithAllocator(std.testing.allocator);
-    /// defer it.deinit(); // no-op unless WASI or Windows
-    /// const testargs = try std.testing.getTestArgs(&it);
-    /// var tmp = std.testing.tmpDir(.{ .no_follow = true }); // ie zig-cache/tmp/8DLgoSEqz593PAEE
-    /// defer tmp.cleanup();
-    /// const zigfile_path = try tmp.writeZigFile(std.testing.allocator, progstr, "bruh");
-    /// defer std.testing.allocator.free(zigfile_path);
-    /// const binary = zigfile_path[0 .. zigfile_path.len - 4]; // '.zig' is 4 characters
-    /// try std.testing.buildExe(testargs.zigexec, zigfile_path, binary);
-    /// ```
-    pub fn writeZigFile(
-        self: *TmpDir,
-        alloc: std.mem.Allocator,
-        progstr: []const u8,
-        filename: []const u8,
-    ) ![]const u8 {
-        const tmpdir_path = try self.getFullPath(alloc);
-        defer alloc.free(tmpdir_path);
-        const suffix_zig = ".zig";
-        const zigfile_path = try std.mem.concat(alloc, u8, &[_][]const u8{
-            tmpdir_path,
-            std.fs.path.sep_str,
-            filename,
-            suffix_zig,
-        });
-        errdefer alloc.free(zigfile_path);
-        const zigfile = try std.mem.concat(alloc, u8, &[_][]const u8{ filename, suffix_zig });
-        defer alloc.free(zigfile);
-        try self.dir.writeFile(zigfile, progstr);
-        return zigfile_path;
-    }
 };
 
 fn getCwdOrWasiPreopen() std.fs.Dir {