diff --git a/CMakeLists.txt b/CMakeLists.txt
index 93dac0aaf98..f1485cff3e7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -688,6 +688,8 @@ if(FLATBUFFERS_BUILD_TESTS)
   enable_testing()
 
   add_test(NAME flattests COMMAND flattests)
+  # Add CMake tests defined in the `tests` directory (python/unit tests).
+  add_subdirectory(tests)
   if(FLATBUFFERS_BUILD_CPP17)
     add_test(NAME flattests_cpp17 COMMAND flattests_cpp17)
   endif()
diff --git a/goldens/lua/MyGame/Example/NamespaceTest.lua b/goldens/lua/MyGame/Example/NamespaceTest.lua
new file mode 100644
index 00000000000..29192a1f809
--- /dev/null
+++ b/goldens/lua/MyGame/Example/NamespaceTest.lua
@@ -0,0 +1,70 @@
+--[[ MyGame.Example.NamespaceTest
+
+  Automatically generated by the FlatBuffers compiler, do not modify.
+  Or modify. I'm a message, not a cop.
+
+  flatc version: 25.9.23
+
+  Declared by  : //namespace_first.fbs
+  Rooting type : MyGame.Example.NamespaceTest (//namespace_first.fbs)
+
+--]]
+
+local flatbuffers = require('flatbuffers')
+
+local NamespaceTest = {}
+local mt = {}
+
+function NamespaceTest.New()
+  local o = {}
+  setmetatable(o, {__index = mt})
+  return o
+end
+
+function NamespaceTest.GetRootAsNamespaceTest(buf, offset)
+  if type(buf) == "string" then
+    buf = flatbuffers.binaryArray.New(buf)
+  end
+
+  local n = flatbuffers.N.UOffsetT:Unpack(buf, offset)
+  local o = NamespaceTest.New()
+  o:Init(buf, n + offset)
+  return o
+end
+
+function mt:Init(buf, pos)
+  self.view = flatbuffers.view.New(buf, pos)
+end
+
+function mt:Name()
+  local o = self.view:Offset(4)
+  if o ~= 0 then
+    return self.view:String(self.view.pos + o)
+  end
+end
+
+function mt:Value()
+  local o = self.view:Offset(6)
+  if o ~= 0 then
+    return self.view:Get(flatbuffers.N.Int32, self.view.pos + o)
+  end
+  return 0
+end
+
+function NamespaceTest.Start(builder)
+  builder:StartObject(2)
+end
+
+function NamespaceTest.AddName(builder, name)
+  builder:PrependUOffsetTRelativeSlot(0, name, 0)
+end
+
+function NamespaceTest.AddValue(builder, value)
+  builder:PrependInt32Slot(1, value, 0)
+end
+
+function NamespaceTest.End(builder)
+  return builder:EndObject()
+end
+
+return NamespaceTest
\ No newline at end of file
diff --git a/goldens/lua/flatbuffers/goldens/Galaxy.lua b/goldens/lua/flatbuffers/goldens/Galaxy.lua
new file mode 100644
index 00000000000..47e606919fa
--- /dev/null
+++ b/goldens/lua/flatbuffers/goldens/Galaxy.lua
@@ -0,0 +1,48 @@
+--[[ flatbuffers.goldens.Galaxy
+
+  Automatically generated by the FlatBuffers compiler, do not modify.
+  Or modify. I'm a message, not a cop.
+
+  flatc version: 25.9.23
+
+  Declared by  : //basic.fbs
+  Rooting type : flatbuffers.goldens.Universe (//basic.fbs)
+
+--]]
+
+local flatbuffers = require('flatbuffers')
+
+local Galaxy = {}
+local mt = {}
+
+function Galaxy.New()
+  local o = {}
+  setmetatable(o, {__index = mt})
+  return o
+end
+
+function mt:Init(buf, pos)
+  self.view = flatbuffers.view.New(buf, pos)
+end
+
+function mt:NumStars()
+  local o = self.view:Offset(4)
+  if o ~= 0 then
+    return self.view:Get(flatbuffers.N.Int64, self.view.pos + o)
+  end
+  return 0
+end
+
+function Galaxy.Start(builder)
+  builder:StartObject(1)
+end
+
+function Galaxy.AddNumStars(builder, numStars)
+  builder:PrependInt64Slot(0, numStars, 0)
+end
+
+function Galaxy.End(builder)
+  return builder:EndObject()
+end
+
+return Galaxy
\ No newline at end of file
diff --git a/goldens/lua/flatbuffers/goldens/Universe.lua b/goldens/lua/flatbuffers/goldens/Universe.lua
new file mode 100644
index 00000000000..78400a8e9c0
--- /dev/null
+++ b/goldens/lua/flatbuffers/goldens/Universe.lua
@@ -0,0 +1,88 @@
+--[[ flatbuffers.goldens.Universe
+
+  Automatically generated by the FlatBuffers compiler, do not modify.
+  Or modify. I'm a message, not a cop.
+
+  flatc version: 25.9.23
+
+  Declared by  : //basic.fbs
+  Rooting type : flatbuffers.goldens.Universe (//basic.fbs)
+
+--]]
+
+local __flatbuffers_goldens_Galaxy = require('flatbuffers.goldens.Galaxy')
+local flatbuffers = require('flatbuffers')
+
+local Universe = {}
+local mt = {}
+
+function Universe.New()
+  local o = {}
+  setmetatable(o, {__index = mt})
+  return o
+end
+
+function Universe.GetRootAsUniverse(buf, offset)
+  if type(buf) == "string" then
+    buf = flatbuffers.binaryArray.New(buf)
+  end
+
+  local n = flatbuffers.N.UOffsetT:Unpack(buf, offset)
+  local o = Universe.New()
+  o:Init(buf, n + offset)
+  return o
+end
+
+function mt:Init(buf, pos)
+  self.view = flatbuffers.view.New(buf, pos)
+end
+
+function mt:Age()
+  local o = self.view:Offset(4)
+  if o ~= 0 then
+    return self.view:Get(flatbuffers.N.Float64, self.view.pos + o)
+  end
+  return 0.0
+end
+
+function mt:Galaxies(j)
+  local o = self.view:Offset(6)
+  if o ~= 0 then
+    local x = self.view:Vector(o)
+    x = x + ((j-1) * 4)
+    x = self.view:Indirect(x)
+    local obj = __flatbuffers_goldens_Galaxy.New()
+    obj:Init(self.view.bytes, x)
+    return obj
+  end
+end
+
+function mt:GalaxiesLength()
+  local o = self.view:Offset(6)
+  if o ~= 0 then
+    return self.view:VectorLen(o)
+  end
+  return 0
+end
+
+function Universe.Start(builder)
+  builder:StartObject(2)
+end
+
+function Universe.AddAge(builder, age)
+  builder:PrependFloat64Slot(0, age, 0.0)
+end
+
+function Universe.AddGalaxies(builder, galaxies)
+  builder:PrependUOffsetTRelativeSlot(1, galaxies, 0)
+end
+
+function Universe.StartGalaxiesVector(builder, numElems)
+  return builder:StartVector(4, numElems, 4)
+end
+
+function Universe.End(builder)
+  return builder:EndObject()
+end
+
+return Universe
\ No newline at end of file
diff --git a/goldens/lua/generate.py b/goldens/lua/generate.py
index 108a4d580ed..1ecbd2fec6a 100644
--- a/goldens/lua/generate.py
+++ b/goldens/lua/generate.py
@@ -8,3 +8,5 @@ def flatc(options, schema):
 
 def GenerateLua():
   flatc([], "basic.fbs")
+  # Test schema that starts with namespace declaration
+  flatc([], "namespace_first.fbs")
diff --git a/goldens/nim/flatbuffers/goldens/Galaxy.nim b/goldens/nim/flatbuffers/goldens/Galaxy.nim
new file mode 100644
index 00000000000..77172bed3d6
--- /dev/null
+++ b/goldens/nim/flatbuffers/goldens/Galaxy.nim
@@ -0,0 +1,26 @@
+#[ flatbuffers.goldens.Galaxy
+  Automatically generated by the FlatBuffers compiler, do not modify.
+  Or modify. I'm a message, not a cop.
+
+  flatc version: 25.9.23
+
+  Declared by  : //basic.fbs
+  Rooting type : flatbuffers.goldens.Universe (//basic.fbs)
+]#
+
+import flatbuffers
+
+type Galaxy* = object of FlatObj
+func numStars*(self: Galaxy): int64 =
+  let o = self.tab.Offset(4)
+  if o != 0:
+    return Get[int64](self.tab, self.tab.Pos + o)
+  return 0
+func `numStars=`*(self: var Galaxy, n: int64): bool =
+  return self.tab.MutateSlot(4, n)
+proc GalaxyStart*(builder: var Builder) =
+  builder.StartObject(1)
+proc GalaxyAddnumStars*(builder: var Builder, numStars: int64) =
+  builder.PrependSlot(0, numStars, default(int64))
+proc GalaxyEnd*(builder: var Builder): uoffset =
+  return builder.EndObject()
diff --git a/goldens/nim/flatbuffers/goldens/Universe.nim b/goldens/nim/flatbuffers/goldens/Universe.nim
new file mode 100644
index 00000000000..3bf3daa4b7d
--- /dev/null
+++ b/goldens/nim/flatbuffers/goldens/Universe.nim
@@ -0,0 +1,46 @@
+#[ flatbuffers.goldens.Universe
+  Automatically generated by the FlatBuffers compiler, do not modify.
+  Or modify. I'm a message, not a cop.
+
+  flatc version: 25.9.23
+
+  Declared by  : //basic.fbs
+  Rooting type : flatbuffers.goldens.Universe (//basic.fbs)
+]#
+
+import Galaxy as flatbuffers_goldens_Galaxy
+import flatbuffers
+import std/options
+
+type Universe* = object of FlatObj
+func age*(self: Universe): float64 =
+  let o = self.tab.Offset(4)
+  if o != 0:
+    return Get[float64](self.tab, self.tab.Pos + o)
+  return 0.0
+func `age=`*(self: var Universe, n: float64): bool =
+  return self.tab.MutateSlot(4, n)
+func galaxiesLength*(self: Universe): int = 
+  let o = self.tab.Offset(6)
+  if o != 0:
+    return self.tab.VectorLen(o)
+func galaxies*(self: Universe, j: int): flatbuffers_goldens_Galaxy.Galaxy = 
+  let o = self.tab.Offset(6)
+  if o != 0:
+    var x = self.tab.Vector(o)
+    x += j.uoffset * 4.uoffset
+    return flatbuffers_goldens_Galaxy.Galaxy(tab: Vtable(Bytes: self.tab.Bytes, Pos: x))
+func galaxies*(self: Universe): seq[flatbuffers_goldens_Galaxy.Galaxy] = 
+  let len = self.galaxiesLength
+  for i in countup(0, len - 1):
+    result.add(self.galaxies(i))
+proc UniverseStart*(builder: var Builder) =
+  builder.StartObject(2)
+proc UniverseAddage*(builder: var Builder, age: float64) =
+  builder.PrependSlot(0, age, default(float64))
+proc UniverseAddgalaxies*(builder: var Builder, galaxies: uoffset) =
+  builder.PrependSlot(1, galaxies, default(uoffset))
+proc UniverseStartgalaxiesVector*(builder: var Builder, numElems: uoffset) =
+  builder.StartVector(4, numElems, 4)
+proc UniverseEnd*(builder: var Builder): uoffset =
+  return builder.EndObject()
diff --git a/goldens/schema/namespace_first.fbs b/goldens/schema/namespace_first.fbs
new file mode 100644
index 00000000000..5dfe1fd5496
--- /dev/null
+++ b/goldens/schema/namespace_first.fbs
@@ -0,0 +1,8 @@
+namespace MyGame.Example;
+
+table NamespaceTest {
+  name:string;
+  value:int;
+}
+
+root_type NamespaceTest;
\ No newline at end of file
diff --git a/goldens/swift/basic_generated.swift b/goldens/swift/basic_generated.swift
index 852868bfe7b..4182078dd64 100644
--- a/goldens/swift/basic_generated.swift
+++ b/goldens/swift/basic_generated.swift
@@ -8,7 +8,7 @@ import Common
 
 import FlatBuffers
 
-public struct flatbuffers_goldens_Galaxy: FlatBufferObject, Verifiable {
+public struct flatbuffers_goldens_Galaxy: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
 
   static func validateVersion() { FlatBuffersVersion_25_9_23() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -43,7 +43,7 @@ public struct flatbuffers_goldens_Galaxy: FlatBufferObject, Verifiable {
   }
 }
 
-public struct flatbuffers_goldens_Universe: FlatBufferObject, Verifiable {
+public struct flatbuffers_goldens_Universe: FlatBufferTable, FlatbuffersVectorInitializable, Verifiable {
 
   static func validateVersion() { FlatBuffersVersion_25_9_23() }
   public var __buffer: ByteBuffer! { return _accessor.bb }
@@ -60,9 +60,7 @@ public struct flatbuffers_goldens_Universe: FlatBufferObject, Verifiable {
   }
 
   public var age: Double { let o = _accessor.offset(VTOFFSET.age.v); return o == 0 ? 0.0 : _accessor.readBuffer(of: Double.self, at: o) }
-  public var hasGalaxies: Bool { let o = _accessor.offset(VTOFFSET.galaxies.v); return o == 0 ? false : true }
-  public var galaxiesCount: Int32 { let o = _accessor.offset(VTOFFSET.galaxies.v); return o == 0 ? 0 : _accessor.vector(count: o) }
-  public func galaxies(at index: Int32) -> flatbuffers_goldens_Galaxy? { let o = _accessor.offset(VTOFFSET.galaxies.v); return o == 0 ? nil : flatbuffers_goldens_Galaxy(_accessor.bb, o: _accessor.indirect(_accessor.vector(at: o) + index * 4)) }
+  public var galaxies: FlatbufferVector<flatbuffers_goldens_Galaxy> { return _accessor.vector(at: VTOFFSET.galaxies.v, byteSize: 4) }
   public static func startUniverse(_ fbb: inout FlatBufferBuilder) -> UOffset { fbb.startTable(with: 2) }
   public static func add(age: Double, _ fbb: inout FlatBufferBuilder) { fbb.add(element: age, def: 0.0, at: VTOFFSET.age.p) }
   public static func addVectorOf(galaxies: Offset, _ fbb: inout FlatBufferBuilder) { fbb.add(offset: galaxies, at: VTOFFSET.galaxies.p) }
diff --git a/src/bfbs_gen_lua.cpp b/src/bfbs_gen_lua.cpp
index 7e1e372b4d6..153a7882efc 100644
--- a/src/bfbs_gen_lua.cpp
+++ b/src/bfbs_gen_lua.cpp
@@ -694,10 +694,12 @@ class LuaBfbsGenerator : public BaseBfbsGenerator {
       std::replace(path.begin(), path.end(), '.', '/');
     }
 
-    // TODO(derekbailey): figure out a save file without depending on util.h
-    EnsureDirExists(path);
-    const std::string file_name =
-        options_.output_path + path + "/" + namer_.File(name);
+    // Create the full directory under the configured output path. Use
+    // ConCatPathFileName to safely join path components (it will add the
+    // trailing separator if needed and strip a leading './').
+    const std::string full_dir = ConCatPathFileName(options_.output_path, path);
+    EnsureDirExists(full_dir);
+    const std::string file_name = ConCatPathFileName(full_dir, namer_.File(name));
     SaveFile(file_name.c_str(), code, false);
   }
 
diff --git a/src/bfbs_gen_nim.cpp b/src/bfbs_gen_nim.cpp
index ec72930e684..d4e77999f30 100644
--- a/src/bfbs_gen_nim.cpp
+++ b/src/bfbs_gen_nim.cpp
@@ -714,10 +714,12 @@ class NimBfbsGenerator : public BaseBfbsGenerator {
       std::replace(path.begin(), path.end(), '.', '/');
     }
 
-    // TODO(derekbailey): figure out a save file without depending on util.h
-    EnsureDirExists(path);
-    const std::string file_name =
-        options_.output_path + path + "/" + namer_.File(name);
+    // Create the full directory under the configured output path. Use
+    // ConCatPathFileName to safely join path components (it will add the
+    // trailing separator if needed and strip a leading './').
+    const std::string full_dir = ConCatPathFileName(options_.output_path, path);
+    EnsureDirExists(full_dir);
+    const std::string file_name = ConCatPathFileName(full_dir, namer_.File(name));
     SaveFile(file_name.c_str(), code, false);
   }
 
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
new file mode 100644
index 00000000000..325eba04a97
--- /dev/null
+++ b/tests/CMakeLists.txt
@@ -0,0 +1,8 @@
+# Test that bfbs generators handle namespace-first schemas correctly
+find_package(Python3 REQUIRED COMPONENTS Interpreter)
+
+add_test(
+  NAME test_bfbs_namespace_output
+  COMMAND ${Python3_EXECUTABLE} -m unittest test_bfbs_namespace_output.py -v
+  WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
\ No newline at end of file
diff --git a/tests/test_bfbs_namespace_output.py b/tests/test_bfbs_namespace_output.py
new file mode 100644
index 00000000000..63734f50194
--- /dev/null
+++ b/tests/test_bfbs_namespace_output.py
@@ -0,0 +1,61 @@
+import os
+import subprocess
+import tempfile
+import unittest
+
+class TestBfbsGeneratorNamespaceOutput(unittest.TestCase):
+    def test_lua_generator_respects_output_path_with_namespace_first_line(self):
+        # Schema that starts with a namespace on the first line (no leading comments)
+        schema = """namespace My.Game;
+
+table Monster {
+  id:int;
+}
+
+root_type Monster;
+"""
+        with tempfile.TemporaryDirectory() as tmpdir:
+            schema_path = os.path.join(tmpdir, "schema.fbs")
+            with open(schema_path, "w") as f:
+                f.write(schema)
+
+                # Run the built flatc binary. Locate repository root relative to
+                # this test file so the test works regardless of the current
+                # working directory used by the test runner.
+                repo_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
+                flatc_bin = os.path.join(repo_root, "build", "flatc")
+                cmd = [flatc_bin, "--lua", "-o", tmpdir, schema_path]
+            res = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            self.assertEqual(res.returncode, 0, f"flatc failed: {res.stderr.decode()}")
+
+            # Expected generated file should be under tmpdir/My/Game/Monster.lua
+            expected_path = os.path.join(tmpdir, "My", "Game", "Monster.lua")
+            self.assertTrue(os.path.exists(expected_path), f"Expected file not found: {expected_path}")
+
+    def test_nim_generator_respects_output_path_with_namespace_first_line(self):
+        # Same schema, but ensure the Nim bfbs generator writes under the
+        # configured output path.
+        schema = """namespace My.Game;
+
+table Monster {
+  id:int;
+}
+
+root_type Monster;
+"""
+        with tempfile.TemporaryDirectory() as tmpdir:
+            schema_path = os.path.join(tmpdir, "schema.fbs")
+            with open(schema_path, "w") as f:
+                f.write(schema)
+
+            repo_root = os.path.abspath(os.path.join(os.path.dirname(__file__), '..'))
+            flatc_bin = os.path.join(repo_root, "build", "flatc")
+            cmd = [flatc_bin, "--nim", "-o", tmpdir, schema_path]
+            res = subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+            self.assertEqual(res.returncode, 0, f"flatc failed: {res.stderr.decode()}")
+
+            expected_path = os.path.join(tmpdir, "My", "Game", "Monster.nim")
+            self.assertTrue(os.path.exists(expected_path), f"Expected file not found: {expected_path}")
+
+if __name__ == '__main__':
+    unittest.main()