diff --git a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_decrement/postfix_decrement_byte.ets b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_decrement/postfix_decrement_byte.ets
index c9f4b0827d152bd92fe95fc7ee51bf01e43db80e..7b8efe887d31f74e5f81530be6818552a441be18 100644
--- a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_decrement/postfix_decrement_byte.ets
+++ b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_decrement/postfix_decrement_byte.ets
@@ -16,6 +16,7 @@ limitations under the License.
 {% for v in values %}
 /*---
 desc: check postfix decrement for byte operand
+tags: [negative, compile-only]
 ---*/
 
 function main(): void {
@@ -26,3 +27,5 @@ function main(): void {
 }
 
 {% endfor %}
+
+/* @@? 23:18 Error TypeError: Type 'Int' cannot be assigned to type 'Byte' */
diff --git a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_decrement/postfix_decrement_short.ets b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_decrement/postfix_decrement_short.ets
index 0401906dfc2f01a568cef52dde3659f81d8aad24..e35969119d07dbbaa5052b1816db748a30ff937f 100644
--- a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_decrement/postfix_decrement_short.ets
+++ b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_decrement/postfix_decrement_short.ets
@@ -16,6 +16,7 @@ limitations under the License.
 {% for v in values %}
 /*---
 desc: check postfix decrement for short integer operand
+tags: [negative, compile-only]
 ---*/
 
 function main(): void {
@@ -26,3 +27,5 @@ function main(): void {
 }
 
 {% endfor %}
+
+/* @@? 23:19 Error TypeError: Type 'Int' cannot be assigned to type 'Short' */
diff --git a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_increment/postfix_increment_byte.ets b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_increment/postfix_increment_byte.ets
index 96a83de32729b2276f73412c5f38e99b610a8426..8d13f5c6e4178e16476d4626072d4e42d0ab2bc5 100644
--- a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_increment/postfix_increment_byte.ets
+++ b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_increment/postfix_increment_byte.ets
@@ -16,6 +16,7 @@ limitations under the License.
 {% for v in values %}
 /*---
 desc: check postfix increment for byte operand
+tags: [negative, compile-only]
 ---*/
 
 function main(): void {
@@ -26,3 +27,5 @@ function main(): void {
 }
 
 {% endfor %}
+
+/* @@? 23:18 Error TypeError: Type 'Int' cannot be assigned to type 'Byte' */
diff --git a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_increment/postfix_increment_short.ets b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_increment/postfix_increment_short.ets
index 3e0169256ec2d77ca5a6d57cd1207c324ce98a82..0f96d9d9e28b1e3e58db2f1331b99d1b552945f9 100644
--- a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_increment/postfix_increment_short.ets
+++ b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/postfix_increment/postfix_increment_short.ets
@@ -16,6 +16,7 @@ limitations under the License.
 {% for v in values %}
 /*---
 desc: check postfix increment for short integer operand
+tags: [negative, compile-only]
 ---*/
 
 function main(): void {
@@ -26,3 +27,5 @@ function main(): void {
 }
 
 {% endfor %}
+
+/* @@? 23:19 Error TypeError: Type 'Int' cannot be assigned to type 'Short' */
diff --git a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_decrement/prefix_decrement_byte.ets b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_decrement/prefix_decrement_byte.ets
index a7cec74952e5c9b312b89224aa639d237466be9f..a7dc005b577674b2d411dcd697020e3379bec5a9 100644
--- a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_decrement/prefix_decrement_byte.ets
+++ b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_decrement/prefix_decrement_byte.ets
@@ -16,6 +16,7 @@ limitations under the License.
 {% for v in values %}
 /*---
 desc: check prefix decrement for byte operand
+tags: [negative, compile-only]
 ---*/
 
 function main(): void {
@@ -26,3 +27,5 @@ function main(): void {
 }
 
 {% endfor %}
+
+/* @@? 23:22 Error TypeError: Type 'Int' cannot be assigned to type 'Byte' */
diff --git a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_decrement/prefix_decrement_short.ets b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_decrement/prefix_decrement_short.ets
index 20aa514c2245ac1e8aa3746be75a9e1bd5189c49..d3377a5ad4a41b33f4878bbce3cd5b841a94f03e 100644
--- a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_decrement/prefix_decrement_short.ets
+++ b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_decrement/prefix_decrement_short.ets
@@ -16,6 +16,7 @@ limitations under the License.
 {% for v in values %}
 /*---
 desc: check prefix decrement for short integer operand
+tags: [negative, compile-only]
 ---*/
 
 function main(): void {
@@ -26,3 +27,5 @@ function main(): void {
 }
 
 {% endfor %}
+
+/* @@? 23:23 Error TypeError: Type 'Int' cannot be assigned to type 'Short' */
diff --git a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_increment/prefix_increment_byte.ets b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_increment/prefix_increment_byte.ets
index b79d2724eeaa82a5db218702b5c47a3943180a28..f831742eb15b388cffa45dfd5f77f19b2dea7591 100644
--- a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_increment/prefix_increment_byte.ets
+++ b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_increment/prefix_increment_byte.ets
@@ -16,6 +16,7 @@ limitations under the License.
 {% for v in values %}
 /*---
 desc: check prefix increment for byte operand
+tags: [negative, compile-only]
 ---*/
 
 function main(): void {
@@ -26,3 +27,5 @@ function main(): void {
 }
 
 {% endfor %}
+
+/* @@? 23:22 Error TypeError: Type 'Int' cannot be assigned to type 'Byte' */
diff --git a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_increment/prefix_increment_short.ets b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_increment/prefix_increment_short.ets
index 7bbd19dc98a9c7d571b230e12576bf108305f86a..9aa26aa5e2f5a95680b067129aedea153dd7c137 100644
--- a/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_increment/prefix_increment_short.ets
+++ b/static_core/plugins/ets/tests/ets-templates/03.types/06.value_types/02.integer_types_and_operations/prefix_increment/prefix_increment_short.ets
@@ -16,6 +16,7 @@ limitations under the License.
 {% for v in values %}
 /*---
 desc: check prefix increment for short integer operand
+tags: [negative, compile-only]
 ---*/
 
 function main(): void {
@@ -26,3 +27,5 @@ function main(): void {
 }
 
 {% endfor %}
+
+/* @@? 23:23 Error TypeError: Type 'Int' cannot be assigned to type 'Short' */
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion.params.yaml b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion.params.yaml
index c9bf128c999b28042db4c534f997022838a247b4..d746c56d55f5a2b57959d42cad29cf1bce4d3ba4 100644
--- a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion.params.yaml
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion.params.yaml
@@ -13,15 +13,11 @@
 
 ---
 types:
-  - { ptype: byte, expr: 0x55, postfix: ++, result: 86 }
-  - { ptype: short, expr: 0x5555, postfix: ++, result: 21846 }
   - { ptype: int, expr: 0x12121212, postfix: ++, result: 303174163 }
   - { ptype: long, expr: 0x3434343456565656, postfix: ++, result: 3761688988152649303 }
   - { ptype: float, expr: 0.00001f, postfix: ++, result: 1.00001f }
   - { ptype: double, expr: 0.00000000001, postfix: ++, result: 1.00000000001 }
 
-  - { ptype: byte, expr: 0x55, postfix: --, result: 84 }
-  - { ptype: short, expr: 0x5555, postfix: --, result: 21844 }
   - { ptype: int, expr: 0x12121212, postfix: --, result: 303174161 }
   - { ptype: long, expr: 0x3434343456565656, postfix: --, result: 3761688988152649301 }
   - { ptype: float, expr: 0.00001f, postfix: --, result: -0.99999f}
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_byte.ets b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_byte.ets
new file mode 100644
index 0000000000000000000000000000000000000000..82fc479d2dd31dd0f7ed1ff6528cf214cdc3f5ee
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_byte.ets
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+{% for t in types %}
+/*---
+desc: Casting conversion implicitly in the following arithmetic operations - Postfix Increment
+tags: [negative, compile-only]
+---*/
+
+function main(): void {
+  let p{{loop.index}}: {{t.ptype}} = {{t.expr|safe}};
+  let r{{loop.index}}: {{t.ptype}} = p{{loop.index}}{{t.postfix}};
+  arktest.assertEQ(p{{loop.index}}, {{t.result}})
+}
+{% endfor %}
+
+/* @@? 23:18 Error TypeError: Type 'Int' cannot be assigned to type 'Byte' */
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_byte.params.yaml b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_byte.params.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..14f1b767bc2563f6e1430f634159089a9a054586
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_byte.params.yaml
@@ -0,0 +1,18 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+---
+types:
+  - { ptype: byte, expr: 0x55, postfix: ++, result: 86 }
+
+  - { ptype: byte, expr: 0x55, postfix: --, result: 84 }
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_short.ets b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_short.ets
new file mode 100644
index 0000000000000000000000000000000000000000..49b667362871d054248f137116f520958ac1b3a8
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_short.ets
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+{% for t in types %}
+/*---
+desc: Casting conversion implicitly in the following arithmetic operations - Postfix Increment
+tags: [negative, compile-only]
+---*/
+
+function main(): void {
+  let p{{loop.index}}: {{t.ptype}} = {{t.expr|safe}};
+  let r{{loop.index}}: {{t.ptype}} = p{{loop.index}}{{t.postfix}};
+  arktest.assertEQ(p{{loop.index}}, {{t.result}})
+}
+{% endfor %}
+
+/* @@? 23:19 Error TypeError: Type 'Int' cannot be assigned to type 'Short' */
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_short.params.yaml b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_short.params.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..688f72fc49e1d7534b4e7d10598582c2a9119de7
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/postfix_conversion_short.params.yaml
@@ -0,0 +1,18 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+---
+types:
+  - { ptype: short, expr: 0x5555, postfix: ++, result: 21846 }
+
+  - { ptype: short, expr: 0x5555, postfix: --, result: 21844 }
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion.params.yaml b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion.params.yaml
index 0ba99f409b3abef89f185b1fad7f9d756aabf5f7..4c1ed8b6c65134a766a4d5f02c853a0fa19a87b9 100644
--- a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion.params.yaml
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion.params.yaml
@@ -14,15 +14,11 @@
 ---
 
 types:
-  - { ptype: byte, expr: 0x55, prefix: ++, result: 86 }
-  - { ptype: short, expr: 0x5555, prefix: ++, result: 21846 }
   - { ptype: int, expr: 0x12121212, prefix: ++, result: 303174163 }
   - { ptype: long, expr: 0x3434343456565656, prefix: ++, result: 3761688988152649303 }
   - { ptype: float, expr: 0.00001f, prefix: ++, result: 1.00001f }
   - { ptype: double, expr: 0.00000000001, prefix: ++, result: 1.00000000001 }
 
-  - { ptype: byte, expr: 0x55, prefix: --, result: 84 }
-  - { ptype: short, expr: 0x5555, prefix: --, result: 21844 }
   - { ptype: int, expr: 0x12121212, prefix: --, result: 303174161 }
   - { ptype: long, expr: 0x3434343456565656, prefix: --, result: 3761688988152649301 }
   - { ptype: float, expr: 0.00001f, prefix: --, result: -0.99999f }
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_byte.ets b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_byte.ets
new file mode 100644
index 0000000000000000000000000000000000000000..1fdd8f3a5616d71bad63af175f36655cf1eecdcb
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_byte.ets
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+{% for t in types %}
+/*---
+desc: Casting conversion implicitly in the following arithmetic operations - Prefix Increment
+tags: [negative, compile-only]
+---*/
+
+function main(): void {  
+  let p{{loop.index}}: {{t.ptype}} = {{t.expr|safe}};
+  let r{{loop.index}}: {{t.ptype}} = {{t.prefix}}p{{loop.index}};
+  arktest.assertEQ(r{{loop.index}}, {{t.result}})
+}
+{% endfor %}
+
+/* @@? 23:22 Error TypeError: Type 'Int' cannot be assigned to type 'Byte' */
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_byte.params.yaml b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_byte.params.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..206eb2ac657fbf9f2100e17d27f3fb66d2629035
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_byte.params.yaml
@@ -0,0 +1,19 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+---
+
+types:
+  - { ptype: byte, expr: 0x55, prefix: ++, result: 86 }
+
+  - { ptype: byte, expr: 0x55, prefix: --, result: 84 }
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_short.ets b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_short.ets
new file mode 100644
index 0000000000000000000000000000000000000000..796e425117d7f441fb880449a83bba192ac7d94c
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_short.ets
@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2025 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+{% for t in types %}
+/*---
+desc: Casting conversion implicitly in the following arithmetic operations - Prefix Increment
+tags: [negative, compile-only]
+---*/
+
+function main(): void {  
+  let p{{loop.index}}: {{t.ptype}} = {{t.expr|safe}};
+  let r{{loop.index}}: {{t.ptype}} = {{t.prefix}}p{{loop.index}};
+  arktest.assertEQ(r{{loop.index}}, {{t.result}})
+}
+{% endfor %}
+
+/* @@? 23:23 Error TypeError: Type 'Int' cannot be assigned to type 'Short' */
diff --git a/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_short.params.yaml b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_short.params.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..2c8c2179860bfddbdcfa718512750144d26081fd
--- /dev/null
+++ b/static_core/plugins/ets/tests/ets-templates/06.contexts_and_conversions/06.numeric_casting_conversions/prefix_conversion_short.params.yaml
@@ -0,0 +1,19 @@
+# Copyright (c) 2025 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+---
+
+types:
+  - { ptype: short, expr: 0x5555, prefix: ++, result: 21846 }
+
+  - { ptype: short, expr: 0x5555, prefix: --, result: 21844 }
diff --git a/static_core/plugins/ets/tests/ets-templates/07.expressions/12.indexing_expression/03.record_indexing_expression/ind.params.yaml b/static_core/plugins/ets/tests/ets-templates/07.expressions/12.indexing_expression/03.record_indexing_expression/ind.params.yaml
index f02abe58e6b7d0a6bef97b67e11373c978158eb6..b8695b2d284a83b8163504c481eacd1e0a03d00f 100644
--- a/static_core/plugins/ets/tests/ets-templates/07.expressions/12.indexing_expression/03.record_indexing_expression/ind.params.yaml
+++ b/static_core/plugins/ets/tests/ets-templates/07.expressions/12.indexing_expression/03.record_indexing_expression/ind.params.yaml
@@ -14,13 +14,14 @@
 ---
 cases:
     # Record key is a union of string literal types
-    - use: |-
+    - tags: 'compile-only, negative'
+      use: |-
           // key is a union of literal types
           let idx: short = 0
           let r: Record<"1"|"2"|"3", Short> = {
               "1": (idx += 1),
-              "2": idx++,
-              "3": ++idx,
+              "2": idx++,   // CTE expected, update expression will extend 'idx' to the 'Int' type
+              "3": ++idx,   // CTE expected, update expression will extend 'idx' to the 'Int' type
           }
           arktest.assertTrue(idx == 3)
           arktest.assertTrue(r["1"] == 1 && r["2"] == 1 && r["3"] == 3)