diff --git a/lib/std/tar.zig b/lib/std/tar.zig
index 21d08c5272..ff8cfd4a36 100644
--- a/lib/std/tar.zig
+++ b/lib/std/tar.zig
@@ -618,10 +618,8 @@ test "tar run Go test cases" {
         err: ?anyerror = null, // parsing should fail with this error
     };
 
-    const test_dir = if (std.os.getenv("GO_TAR_TESTDATA_PATH")) |path|
-        try std.fs.openDirAbsolute(path, .{})
-    else
-        return error.SkipZigTest;
+    const src_path = comptime std.fs.path.dirname(@src().file) orelse ".";
+    const test_dir = try std.fs.cwd().openDir(src_path ++ "/../../test/cases/tar", .{});
 
     const cases = [_]Case{
         .{
@@ -921,9 +919,9 @@ test "tar run Go test cases" {
 
     for (cases) |case| {
         var fs_file = try test_dir.openFile(case.path, .{});
+
         defer fs_file.close();
 
-        //var iter = iterator(fs_file.reader(), null);
         var iter = tarReader(fs_file.reader(), null);
         var i: usize = 0;
         while (iter.next() catch |err| {
diff --git a/test/cases/tar/gnu-incremental.tar b/test/cases/tar/gnu-incremental.tar
new file mode 100644
index 0000000000..4c442e5b82
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diff --git a/test/cases/tar/gnu-long-nul.tar b/test/cases/tar/gnu-long-nul.tar
new file mode 100644
index 0000000000..28bc812aa6
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diff --git a/test/cases/tar/gnu-multi-hdrs.tar b/test/cases/tar/gnu-multi-hdrs.tar
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index 0000000000..8bcad55d06
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diff --git a/test/cases/tar/gnu-not-utf8.tar b/test/cases/tar/gnu-not-utf8.tar
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index 0000000000..81cec67d33
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diff --git a/test/cases/tar/gnu-utf8.tar b/test/cases/tar/gnu-utf8.tar
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index 0000000000..2c9c8079cf
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diff --git a/test/cases/tar/gnu.tar b/test/cases/tar/gnu.tar
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index 0000000000..fc899dc8dc
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diff --git a/test/cases/tar/invalid-go17.tar b/test/cases/tar/invalid-go17.tar
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index 0000000000..58f2488e78
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diff --git a/test/cases/tar/issue10968.tar b/test/cases/tar/issue10968.tar
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index 0000000000..1cc837bcff
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diff --git a/test/cases/tar/issue11169.tar b/test/cases/tar/issue11169.tar
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index 0000000000..4d71fa1526
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diff --git a/test/cases/tar/issue12435.tar b/test/cases/tar/issue12435.tar
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diff --git a/test/cases/tar/neg-size.tar b/test/cases/tar/neg-size.tar
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index 0000000000..21edf38cc3
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diff --git a/test/cases/tar/nil-uid.tar b/test/cases/tar/nil-uid.tar
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index 0000000000..cc9cfaa33c
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diff --git a/test/cases/tar/pax-bad-hdr-file.tar b/test/cases/tar/pax-bad-hdr-file.tar
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index 0000000000..b97cc981f2
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diff --git a/test/cases/tar/pax-global-records.tar b/test/cases/tar/pax-global-records.tar
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index 0000000000..3d3d241e65
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diff --git a/test/cases/tar/pax-multi-hdrs.tar b/test/cases/tar/pax-multi-hdrs.tar
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index 0000000000..14bc759780
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diff --git a/test/cases/tar/pax-nul-path.tar b/test/cases/tar/pax-nul-path.tar
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index 0000000000..c78f82b16e
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diff --git a/test/cases/tar/pax-nul-xattrs.tar b/test/cases/tar/pax-nul-xattrs.tar
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index 0000000000..881f51768f
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diff --git a/test/cases/tar/pax-pos-size-file.tar b/test/cases/tar/pax-pos-size-file.tar
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index 0000000000..ea5ccf9164
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diff --git a/test/cases/tar/pax-records.tar b/test/cases/tar/pax-records.tar
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index 0000000000..276c211baa
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diff --git a/test/cases/tar/sparse-formats.tar b/test/cases/tar/sparse-formats.tar
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index 0000000000..8bd4e74d50
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diff --git a/test/cases/tar/star.tar b/test/cases/tar/star.tar
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index 0000000000..59e2d4e604
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diff --git a/test/cases/tar/trailing-slash.tar b/test/cases/tar/trailing-slash.tar
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index 0000000000..93718b3034
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diff --git a/test/cases/tar/ustar-file-devs.tar b/test/cases/tar/ustar-file-devs.tar
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index 0000000000..146e25b79d
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diff --git a/test/cases/tar/v7.tar b/test/cases/tar/v7.tar
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index 0000000000..eb65fc9410
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diff --git a/test/cases/tar/writer-big-long.tar b/test/cases/tar/writer-big-long.tar
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index 0000000000..09fc5dd3dd
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diff --git a/test/cases/tar/writer-big.tar b/test/cases/tar/writer-big.tar
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diff --git a/test/cases/tar/xattrs.tar b/test/cases/tar/xattrs.tar
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index 0000000000..9701950edd
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