diff --git a/tests/unit/script/types/test_array.py b/tests/unit/script/types/test_array.py
index b3ea68c7..f7f20095 100644
--- a/tests/unit/script/types/test_array.py
+++ b/tests/unit/script/types/test_array.py
@@ -7,6 +7,7 @@ from ytdl_sub.script.parser import UNEXPECTED_COMMA_ARGUMENT
 from ytdl_sub.script.parser import ArgumentParser
 from ytdl_sub.script.script import Script
 from ytdl_sub.script.types.array import ResolvedArray
+from ytdl_sub.script.types.resolvable import Boolean
 from ytdl_sub.script.types.resolvable import Float
 from ytdl_sub.script.types.resolvable import String
 from ytdl_sub.script.utils.exceptions import InvalidSyntaxException
@@ -23,6 +24,18 @@ class TestArray:
             "array": String('str: ["a", 3.14]')
         }
 
+    @pytest.mark.parametrize(
+        "array, expected_bool",
+        [
+            ("{%bool([])}", False),
+            ("{%bool([False])}", True),
+        ],
+    )
+    def test_return_as_bool(self, array: str, expected_bool: bool):
+        assert Script({"array_as_bool": array}).resolve() == {
+            "array_as_bool": Boolean(expected_bool)
+        }
+
     def test_nested_array(self):
         assert Script(
             {"array": "{['level1', ['level2', ['level3', 'level3'], 'level2'], 'level1']}"}
diff --git a/tests/unit/script/types/test_float.py b/tests/unit/script/types/test_float.py
index acbd0016..8d2c97bd 100644
--- a/tests/unit/script/types/test_float.py
+++ b/tests/unit/script/types/test_float.py
@@ -10,6 +10,7 @@ from ytdl_sub.script.parser import UNEXPECTED_COMMA_ARGUMENT
 from ytdl_sub.script.parser import ArgumentParser
 from ytdl_sub.script.script import Script
 from ytdl_sub.script.types.array import ResolvedArray
+from ytdl_sub.script.types.resolvable import Boolean
 from ytdl_sub.script.types.resolvable import Float
 from ytdl_sub.script.types.resolvable import Integer
 from ytdl_sub.script.types.resolvable import String
@@ -49,6 +50,16 @@ class TestFloat:
             "as_string": String(str(expected_float)),
         }
 
+    @pytest.mark.parametrize(
+        "float_, expected_bool",
+        [
+            ("{%bool(0.0)}", False),
+            ("{%bool(0.1)}", True),
+        ],
+    )
+    def test_return_as_bool(self, float_: str, expected_bool: bool):
+        assert Script({"as_bool": float_}).resolve() == {"as_bool": Boolean(expected_bool)}
+
     @pytest.mark.parametrize(
         "float_",
         [
diff --git a/tests/unit/script/types/test_integer.py b/tests/unit/script/types/test_integer.py
index a7237ede..02ed5055 100644
--- a/tests/unit/script/types/test_integer.py
+++ b/tests/unit/script/types/test_integer.py
@@ -10,6 +10,7 @@ from ytdl_sub.script.parser import UNEXPECTED_COMMA_ARGUMENT
 from ytdl_sub.script.parser import ArgumentParser
 from ytdl_sub.script.script import Script
 from ytdl_sub.script.types.array import ResolvedArray
+from ytdl_sub.script.types.resolvable import Boolean
 from ytdl_sub.script.types.resolvable import Float
 from ytdl_sub.script.types.resolvable import Integer
 from ytdl_sub.script.types.resolvable import String
@@ -49,6 +50,16 @@ class TestInteger:
             "as_string": String(str(expected_integer)),
         }
 
+    @pytest.mark.parametrize(
+        "integer, expected_bool",
+        [
+            ("{%bool(0)}", False),
+            ("{%bool(1)}", True),
+        ],
+    )
+    def test_return_as_bool(self, integer: str, expected_bool: bool):
+        assert Script({"as_bool": integer}).resolve() == {"as_bool": Boolean(expected_bool)}
+
     @pytest.mark.parametrize(
         "integer",
         [
diff --git a/tests/unit/script/types/test_map.py b/tests/unit/script/types/test_map.py
index 89285f56..38f8044e 100644
--- a/tests/unit/script/types/test_map.py
+++ b/tests/unit/script/types/test_map.py
@@ -11,6 +11,7 @@ from ytdl_sub.script.parser import UNEXPECTED_COMMA_ARGUMENT
 from ytdl_sub.script.parser import ArgumentParser
 from ytdl_sub.script.script import Script
 from ytdl_sub.script.types.map import ResolvedMap
+from ytdl_sub.script.types.resolvable import Boolean
 from ytdl_sub.script.types.resolvable import Float
 from ytdl_sub.script.types.resolvable import String
 from ytdl_sub.script.utils.exceptions import InvalidSyntaxException
@@ -27,6 +28,16 @@ class TestMap:
             "map": String('json: {"a": 3.14}')
         }
 
+    @pytest.mark.parametrize(
+        "map_, expected_bool",
+        [
+            ("{%bool({})}", False),
+            ("{%bool({'key': 'value'})}", True),
+        ],
+    )
+    def test_return_as_bool(self, map_: str, expected_bool: bool):
+        assert Script({"as_bool": map_}).resolve() == {"as_bool": Boolean(expected_bool)}
+
     def test_nested_map(self):
         map_str = """{
             {
diff --git a/tests/unit/script/types/test_string.py b/tests/unit/script/types/test_string.py
index b4413038..d0aa4df4 100644
--- a/tests/unit/script/types/test_string.py
+++ b/tests/unit/script/types/test_string.py
@@ -12,6 +12,7 @@ from ytdl_sub.script.parser import UNEXPECTED_COMMA_ARGUMENT
 from ytdl_sub.script.parser import ArgumentParser
 from ytdl_sub.script.script import Script
 from ytdl_sub.script.types.array import ResolvedArray
+from ytdl_sub.script.types.resolvable import Boolean
 from ytdl_sub.script.types.resolvable import Float
 from ytdl_sub.script.types.resolvable import Integer
 from ytdl_sub.script.types.resolvable import String
@@ -37,6 +38,8 @@ class TestString:
     @pytest.mark.parametrize(
         "string, expected_string",
         [
+            ("{%string('')}", ""),
+            ('{%string("")}', ""),
             ("{%string('323')}", "323"),
             ('{%string(  "4253"  )}', "4253"),
             ('{%string("hi")}', "hi"),
@@ -55,6 +58,16 @@ class TestString:
     def test_string(self, string: str, expected_string: str):
         assert Script({"string": string}).resolve() == {"string": String(expected_string)}
 
+    @pytest.mark.parametrize(
+        "string, expected_bool",
+        [
+            ("{%bool('')}", False),
+            ("{%bool('false')}", True),
+        ],
+    )
+    def test_return_as_bool(self, string: str, expected_bool: bool):
+        assert Script({"as_bool": string}).resolve() == {"as_bool": Boolean(expected_bool)}
+
     @pytest.mark.parametrize(
         "string",
         [