1 files changed, 36 insertions, 0 deletions

diff --git a/spec/outputs/test/string_interpolation_spec.lua b/spec/outputs/test/string_interpolation_spec.lua
new file mode 100644
index 0000000..abf23eb
--- /dev/null
+++ b/spec/outputs/test/string_interpolation_spec.lua
@@ -0,0 +1,36 @@
+return describe("string interpolation", function()
+        it("should interpolate in double quotes", function()
+                local name = "World"
+                local result = "Hello " .. tostring(name) .. "!"
+                return assert.same(result, "Hello World!")
+        end)
+        it("should interpolate numbers", function()
+                local a, b = 10, 20
+                local result = tostring(a) .. " + " .. tostring(b) .. " = " .. tostring(a + b)
+                return assert.same(result, "10 + 20 = 30")
+        end)
+        it("should interpolate expressions", function()
+                local x = 5
+                local result = "x * 2 = " .. tostring(x * 2)
+                return assert.same(result, "x * 2 = 10")
+        end)
+        it("should interpolate function calls", function()
+                local result = "result: " .. tostring(math.floor(5.5))
+                return assert.same(result, "result: 5")
+        end)
+        it("should interpolate in string literals", function()
+                local x = 100
+                local result = "Value: " .. tostring(x)
+                return assert.same(result, "Value: 100")
+        end)
+        it("should work with nested interpolation", function()
+                local inner = "inner"
+                local result = "Outer: " .. tostring(inner)
+                return assert.same(result, "Outer: inner")
+        end)
+        return it("should not interpolate in single quotes", function()
+                local name = "World"
+                local result = 'Hello #{name}!'
+                return assert.same(result, 'Hello #{name}!')
+        end)
+end)