1 files changed, 59 insertions, 0 deletions

diff --git a/spec/inputs/test/reverse_index_spec.yue b/spec/inputs/test/reverse_index_spec.yue
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+++ b/spec/inputs/test/reverse_index_spec.yue
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+describe "reverse index", ->
+        it "should get last element", ->
+                data = {items: [1, 2, 3, 4, 5]}
+                last = data.items[#]
+                assert.same last, 5
+
+        it "should get second last element", ->
+                data = {items: [1, 2, 3, 4, 5]}
+                second_last = data.items[#-1]
+                assert.same second_last, 4
+
+        it "should get third last element", ->
+                data = {items: [1, 2, 3, 4, 5]}
+                third_last = data.items[#-2]
+                assert.same third_last, 3
+
+        it "should set last element", ->
+                data = {items: [1, 2, 3, 4, 5]}
+                data.items[#] = 10
+                assert.same data.items[5], 10
+
+        it "should set second last element", ->
+                data = {items: [1, 2, 3, 4, 5]}
+                data.items[#-1] = 20
+                assert.same data.items[4], 20
+
+        it "should work with single element", ->
+                tab = {42}
+                assert.same tab[#], 42
+
+        it "should work with empty table", ->
+                tab = []
+                assert.same tab[#], nil
+
+        it "should work in expressions", ->
+                tab = [1, 2, 3, 4, 5]
+                result = tab[#] + tab[#-1]
+                assert.same result, 9
+
+        it "should support chaining", ->
+                data = {items: {nested: [1, 2, 3]}}
+                last = data.items.nested[#]
+                assert.same last, 3
+
+        it "should work with string", ->
+                s = "hello"
+                assert.same s[#], "o"
+
+        it "should handle negative offsets", ->
+                tab = [1, 2, 3, 4, 5]
+                assert.same tab[#-3], 2
+                assert.same tab[#-4], 1
+
+        it "should work in loops", ->
+                tab = [1, 2, 3, 4, 5]
+                results = []
+                for i = 0, 2
+                        table.insert results, tab[#-i]
+                assert.same results, {5, 4, 3}