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diff --git a/spec/inputs/test/table_append_spec.yue b/spec/inputs/test/table_append_spec.yue
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+++ b/spec/inputs/test/table_append_spec.yue
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+describe "table append", ->
+        it "should append single value", ->
+                tab = []
+                tab[] = "Value"
+                assert.same tab[1], "Value"
+                assert.same #tab, 1
+
+        it "should append multiple values", ->
+                tab = []
+                tab[] = 1
+                tab[] = 2
+                tab[] = 3
+                assert.same tab, {1, 2, 3}
+
+        it "should append with spread operator", ->
+                tbA = [1, 2, 3]
+                tbB = [4, 5, 6]
+                tbA[] = ...tbB
+                assert.same tbA, {1, 2, 3, 4, 5, 6}
+
+        it "should append table with single element", ->
+                tab = [1, 2]
+                tb2 = {3}
+                tab[] = table.unpack tb2
+                assert.same tab, {1, 2, 3}
+
+        it "should append empty table", ->
+                tab = [1, 2]
+                tb2 = []
+                tab[] = ...tb2
+                assert.same tab, {1, 2}
+
+        it "should append nil values", ->
+                tab = []
+                tab[] = nil
+                tab[] = "value"
+                assert.same tab[1], nil
+                assert.same tab[2], "value"
+
+        it "should work in loop", ->
+                tab = []
+                for i = 1, 3
+                        tab[] = i * 2
+                assert.same tab, {2, 4, 6}
+
+        it "should append with expressions", ->
+                tab = []
+                x = 10
+                tab[] = x + 5
+                assert.same tab[1], 15
+
+        it "should append mixed types", ->
+                tab = []
+                tab[] = "string"
+                tab[] = 123
+                tab[] = true
+                tab[] = nil
+                assert.same tab, {"string", 123, true, nil}
+
+        it "should append to table with existing elements", ->
+                tab = [1, 2, 3]
+                tab[] = 4
+                tab[] = 5
+                assert.same tab, {1, 2, 3, 4, 5}
+
+        it "should work with nested tables", ->
+                tab = []
+                tab[] = {a: 1, b: 2}
+                tab[] = [3, 4]
+                assert.same tab[1], {a: 1, b: 2}
+                assert.same tab[2], [3, 4]
+
+        it "should append function results", ->
+                fn = -> 1, 2, 3
+                tab = []
+                tab[] = fn!
+                assert.same tab, {1, 2, 3}