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Dale-Blackclaude
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claude
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JST-PG-007: Playground regression suite — 86 end-to-end tests
18 categories covering the full playground pipeline (parse→lower→infer→ codegen→eval): integer/float arithmetic, math functions, comparisons, strings, functions/recursion, if/elseif/else, while/for loops, nested control flow, structs, arrays, try/catch, bool/nothing, pipe operator, cross-function calls, classic algorithms, and mixed types. 810 total tests. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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‎test/runtests.jl‎

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@@ -3187,4 +3187,194 @@ process.stdout.write(String(f_isempty("hello")));
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@test isdefined(JavaScriptTarget, :build_playground)
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end
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end
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# ==============================================================
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# PG-007: Playground regression suite (50+ programs)
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# ==============================================================
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@testset "PG-007: Playground regression suite" begin
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codegen_path = joinpath(@__DIR__, "..", "src", "playground", "codegen.js")
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# Helper: run Julia source through the full JS pipeline (parse→lower→infer→codegen→eval)
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function pg_eval(julia_source::String)
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escaped = replace(julia_source, "\\" => "\\\\", "'" => "\\'", "\n" => "\\n")
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js_code = """
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const codegen = require('$(replace(codegen_path, "\\" => "\\\\"))');
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var result = codegen.compile('$(escaped)');
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var output = '';
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var origLog = console.log;
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console.log = function() {
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var a = [];
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for (var i = 0; i < arguments.length; i++) a.push(String(arguments[i]));
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output += a.join('') + '\\n';
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};
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try { eval(result.js); } catch(e) { output += 'ERROR: ' + e.message + '\\n'; }
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console.log = origLog;
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process.stdout.write(output.trim());
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"""
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return run_js(js_code)
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end
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# ---- Category 1: Integer arithmetic (6 tests) ----
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@testset "Int arithmetic" begin
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@test pg_eval("println(2 + 3)") == "5"
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@test pg_eval("println(100 - 37)") == "63"
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@test pg_eval("println(7 * 8)") == "56"
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@test pg_eval("println(2 ^ 16)") == "65536"
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@test pg_eval("println(-42)") == "-42"
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@test pg_eval("println(17 % 5)") == "2"
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end
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# ---- Category 2: Float arithmetic (5 tests) ----
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@testset "Float arithmetic" begin
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@test pg_eval("println(1.5 + 2.5)") == "4"
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@test pg_eval("println(3.14 * 2.0)") == "6.28"
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@test pg_eval("println(1.0 / 3.0)") == "0.3333333333333333"
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@test pg_eval("println(2.0 ^ 10.0)") == "1024"
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@test pg_eval("println(-3.5)") == "-3.5"
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end
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# ---- Category 3: Math functions (6 tests) ----
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@testset "Math functions" begin
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@test pg_eval("println(sqrt(144.0))") == "12"
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@test pg_eval("println(abs(-7))") == "7"
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@test pg_eval("println(min(3, 5))") == "3"
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@test pg_eval("println(max(3, 5))") == "5"
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@test pg_eval("println(floor(4.9))") == "4"
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@test pg_eval("println(ceil(4.1))") == "5"
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end
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# ---- Category 4: Comparisons & logic (5 tests) ----
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@testset "Comparisons and logic" begin
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@test pg_eval("println(10 > 5)") == "true"
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@test pg_eval("println(10 < 5)") == "false"
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@test pg_eval("println(3 == 3)") == "true"
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@test pg_eval("println(3 != 3)") == "false"
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@test pg_eval("println(!false)") == "true"
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end
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# ---- Category 5: String operations (8 tests) ----
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@testset "String operations" begin
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@test pg_eval("println(string(\"hello\", \" world\"))") == "hello world"
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@test pg_eval("println(uppercase(\"abc\"))") == "ABC"
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@test pg_eval("println(lowercase(\"XYZ\"))") == "xyz"
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@test pg_eval("println(length(\"julia\"))") == "5"
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@test pg_eval("println(startswith(\"foobar\", \"foo\"))") == "true"
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@test pg_eval("println(endswith(\"foobar\", \"bar\"))") == "true"
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@test pg_eval("println(strip(\" spaces \"))") == "spaces"
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@test pg_eval("println(string(\"x=\", 42))") == "x=42"
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end
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# ---- Category 6: Functions & recursion (6 tests) ----
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@testset "Functions and recursion" begin
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@test pg_eval("function square(x)\n return x * x\nend\nprintln(square(9))") == "81"
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@test pg_eval("function add3(a, b, c)\n return a + b + c\nend\nprintln(add3(1, 2, 3))") == "6"
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@test pg_eval("function factorial(n)\n if n <= 1\n return 1\n end\n return n * factorial(n - 1)\nend\nprintln(factorial(6))") == "720"
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@test pg_eval("function fib(n)\n if n <= 1\n return n\n end\n return fib(n - 1) + fib(n - 2)\nend\nprintln(fib(8))") == "21"
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@test pg_eval("function double(x)\n return x * 2\nend\nfunction quadruple(x)\n return double(double(x))\nend\nprintln(quadruple(5))") == "20"
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@test pg_eval("function identity(x)\n return x\nend\nprintln(identity(99))") == "99"
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end
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# ---- Category 7: If/elseif/else (5 tests) ----
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@testset "If/elseif/else" begin
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@test pg_eval("function myabs(x)\n if x >= 0\n return x\n else\n return -x\n end\nend\nprintln(myabs(-10))") == "10"
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@test pg_eval("function sign_of(x)\n if x > 0\n return 1\n elseif x < 0\n return -1\n else\n return 0\n end\nend\nprintln(sign_of(-5))\nprintln(sign_of(0))\nprintln(sign_of(3))") == "-1\n0\n1"
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@test pg_eval("function clamp01(x)\n if x < 0\n return 0\n elseif x > 1\n return 1\n else\n return x\n end\nend\nprintln(clamp01(-5))\nprintln(clamp01(2))\nprintln(clamp01(0.5))") == "0\n1\n0.5"
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@test pg_eval("function even_odd(x)\n if x > 2 * (x / 2 |> floor)\n return \"odd\"\n else\n return \"even\"\n end\nend\nprintln(even_odd(3))\nprintln(even_odd(4))") == "odd\neven"
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@test pg_eval("function letter_grade(score)\n if score >= 90\n return \"A\"\n elseif score >= 80\n return \"B\"\n elseif score >= 70\n return \"C\"\n elseif score >= 60\n return \"D\"\n else\n return \"F\"\n end\nend\nprintln(letter_grade(92))\nprintln(letter_grade(73))\nprintln(letter_grade(55))") == "A\nC\nF"
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end
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# ---- Category 8: While loops (5 tests) ----
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@testset "While loops" begin
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@test pg_eval("function countdown(n)\n while n > 0\n println(n)\n n = n - 1\n end\nend\ncountdown(3)") == "3\n2\n1"
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@test pg_eval("function sumto(n)\n s = 0\n i = 1\n while i <= n\n s = s + i\n i = i + 1\n end\n return s\nend\nprintln(sumto(100))") == "5050"
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@test pg_eval("function power(base, exp)\n result = 1\n i = 0\n while i < exp\n result = result * base\n i = i + 1\n end\n return result\nend\nprintln(power(2, 10))") == "1024"
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@test pg_eval("function digits(n)\n count = 0\n while n > 0\n n = n / 10 |> floor\n count = count + 1\n end\n return count\nend\nprintln(digits(12345))") == "5"
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@test pg_eval("function gcd(a, b)\n while b != 0\n t = b\n b = a - (a / b |> floor) * b\n a = t\n end\n return a\nend\nprintln(gcd(56, 98))") == "14"
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end
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# ---- Category 9: For loops (5 tests) ----
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@testset "For loops" begin
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@test pg_eval("function sum_range(n)\n s = 0\n for i in 1:n\n s = s + i\n end\n return s\nend\nprintln(sum_range(10))") == "55"
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@test pg_eval("function sum_squares(n)\n s = 0\n for i in 1:n\n s = s + i * i\n end\n return s\nend\nprintln(sum_squares(5))") == "55"
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@test pg_eval("function count_down(n)\n for i in 1:n\n println(n - i + 1)\n end\nend\ncount_down(3)") == "3\n2\n1"
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@test pg_eval("function triangular(n)\n t = 0\n for i in 1:n\n t = t + i\n end\n return t\nend\nprintln(triangular(7))") == "28"
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@test pg_eval("function product(n)\n p = 1\n for i in 1:n\n p = p * i\n end\n return p\nend\nprintln(product(5))") == "120"
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end
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# ---- Category 10: Nested control flow (4 tests) ----
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@testset "Nested control flow" begin
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@test pg_eval("function nested_sum(n)\n total = 0\n for i in 1:n\n for j in 1:i\n total = total + 1\n end\n end\n return total\nend\nprintln(nested_sum(4))") == "10"
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@test pg_eval("function fizzbuzz_count(n)\n c = 0\n for i in 1:n\n if i > 3 * (i / 3 |> floor)\n c = c + 1\n end\n end\n return c\nend\nprintln(fizzbuzz_count(10))") == "7"
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@test pg_eval("function prime_check(n)\n if n < 2\n return false\n end\n i = 2\n while i * i <= n\n if n - (n / i |> floor) * i == 0\n return false\n end\n i = i + 1\n end\n return true\nend\nprintln(prime_check(7))\nprintln(prime_check(4))\nprintln(prime_check(13))") == "true\nfalse\ntrue"
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@test pg_eval("function collatz_steps(n)\n steps = 0\n while n != 1\n if n > 2 * (n / 2 |> floor)\n n = 3 * n + 1\n else\n n = n / 2\n end\n steps = steps + 1\n end\n return steps\nend\nprintln(collatz_steps(27))") == "111"
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end
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# ---- Category 11: Structs (6 tests) ----
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@testset "Structs" begin
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@test pg_eval("struct Point\n x\n y\nend\np = Point(3.0, 4.0)\nprintln(p.x)\nprintln(p.y)") == "3\n4"
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@test pg_eval("struct Vec2\n x\n y\nend\nfunction dot(a, b)\n return a.x * b.x + a.y * b.y\nend\nprintln(dot(Vec2(1.0, 2.0), Vec2(3.0, 4.0)))") == "11"
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@test pg_eval("struct Point\n x\n y\nend\nfunction distance(p)\n return sqrt(p.x * p.x + p.y * p.y)\nend\nprintln(distance(Point(3.0, 4.0)))") == "5"
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@test pg_eval("struct RGB\n r\n g\n b\nend\nfunction brightness(c)\n return (c.r + c.g + c.b) / 3.0\nend\nprintln(brightness(RGB(255.0, 128.0, 0.0)))") == "127.66666666666667"
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@test pg_eval("struct Counter\n value\nend\nfunction increment(c)\n return Counter(c.value + 1)\nend\nc = Counter(0)\nc = increment(c)\nc = increment(c)\nc = increment(c)\nprintln(c.value)") == "3"
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@test pg_eval("struct Rect\n w\n h\nend\nfunction area(r)\n return r.w * r.h\nend\nfunction perimeter(r)\n return 2 * (r.w + r.h)\nend\nr = Rect(5.0, 3.0)\nprintln(area(r))\nprintln(perimeter(r))") == "15\n16"
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end
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# ---- Category 12: Arrays (5 tests) ----
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@testset "Arrays" begin
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@test pg_eval("a = [1, 2, 3, 4, 5]\nprintln(a[1])\nprintln(a[5])") == "1\n5"
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@test pg_eval("a = [10, 20, 30]\nprintln(length(a))") == "3"
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@test pg_eval("a = [1, 2, 3]\nprintln(a[1] + a[2] + a[3])") == "6"
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@test pg_eval("a = [100, 200, 300, 400]\nprintln(a[2])\nprintln(a[4])") == "200\n400"
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@test pg_eval("a = [5, 10, 15]\nfunction sum_arr(arr)\n s = 0\n for i in 1:length(arr)\n s = s + arr[i]\n end\n return s\nend\nprintln(sum_arr(a))") == "30"
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end
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# ---- Category 13: Try/catch (4 tests) ----
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@testset "Try/catch" begin
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@test pg_eval("function safe(x)\n try\n return 100 / x\n catch e\n return -1\n end\nend\nprintln(safe(4))") == "25"
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@test pg_eval("function guarded()\n try\n error(\"oops\")\n return 1\n catch e\n return 2\n end\nend\nprintln(guarded())") == "2"
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@test pg_eval("function default_val(x)\n try\n if x < 0\n error(\"negative\")\n end\n return x * 2\n catch e\n return 0\n end\nend\nprintln(default_val(5))\nprintln(default_val(-1))") == "10\n0"
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@test pg_eval("function safe_sqrt(x)\n try\n if x < 0.0\n error(\"domain\")\n end\n return sqrt(x)\n catch e\n return -1.0\n end\nend\nprintln(safe_sqrt(16.0))") == "4"
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end
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# ---- Category 14: Boolean & Nothing (4 tests) ----
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@testset "Bool and Nothing" begin
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@test pg_eval("println(true)\nprintln(false)") == "true\nfalse"
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@test pg_eval("println(nothing)") == "nothing"
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@test pg_eval("function check(x)\n if x > 0\n return true\n else\n return false\n end\nend\nprintln(check(5))\nprintln(check(-1))") == "true\nfalse"
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@test pg_eval("function noop()\n return nothing\nend\nprintln(noop())") == "nothing"
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end
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# ---- Category 15: Pipe operator (2 tests) ----
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@testset "Pipe operator" begin
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@test pg_eval("function triple(x)\n return x * 3\nend\nprintln(7 |> triple)") == "21"
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@test pg_eval("function inc(x)\n return x + 1\nend\nfunction double(x)\n return x * 2\nend\nprintln(3 |> inc |> double)") == "8"
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end
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# ---- Category 16: Multiple functions / cross-calls (3 tests) ----
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@testset "Cross-function calls" begin
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@test pg_eval("function helper(x)\n return x + 10\nend\nfunction main_fn(x)\n return helper(helper(x))\nend\nprintln(main_fn(5))") == "25"
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@test pg_eval("function is_even(n)\n return n - 2 * (n / 2 |> floor) == 0\nend\nfunction count_even(n)\n c = 0\n for i in 1:n\n if is_even(i)\n c = c + 1\n end\n end\n return c\nend\nprintln(count_even(10))") == "5"
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@test pg_eval("function square(x)\n return x * x\nend\nfunction sum_of_squares(n)\n s = 0\n for i in 1:n\n s = s + square(i)\n end\n return s\nend\nprintln(sum_of_squares(5))") == "55"
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end
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# ---- Category 17: Classic algorithms (4 tests) ----
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@testset "Classic algorithms" begin
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# Fibonacci iterative
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@test pg_eval("function fib_iter(n)\n a = 0\n b = 1\n i = 0\n while i < n\n c = a + b\n a = b\n b = c\n i = i + 1\n end\n return a\nend\nprintln(fib_iter(10))") == "55"
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# Power via repeated squaring (iterative)
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@test pg_eval("function fast_pow(base, exp)\n result = 1.0\n b = base\n e = exp\n while e > 0\n if e > 2 * (e / 2 |> floor)\n result = result * b\n end\n b = b * b\n e = e / 2 |> floor\n end\n return result\nend\nprintln(fast_pow(2.0, 10))") == "1024"
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# Integer square root (Newton's method)
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@test pg_eval("function isqrt(n)\n x = n\n while x * x > n\n x = (x + n / x |> floor) / 2 |> floor\n end\n return x\nend\nprintln(isqrt(100))\nprintln(isqrt(50))") == "10\n7"
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# Sum of digits
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@test pg_eval("function digit_sum(n)\n s = 0\n while n > 0\n s = s + n - (n / 10 |> floor) * 10\n n = n / 10 |> floor\n end\n return s\nend\nprintln(digit_sum(12345))") == "15"
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end
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# ---- Category 18: String + numeric mixed (3 tests) ----
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@testset "String and numeric mixed" begin
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@test pg_eval("function describe(n)\n if n > 0\n return string(n, \" is positive\")\n else\n return string(n, \" is non-positive\")\n end\nend\nprintln(describe(5))\nprintln(describe(-3))") == "5 is positive\n-3 is non-positive"
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@test pg_eval("println(repeat(\"ab\", 3))") == "ababab"
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@test pg_eval("println(string(1, \"+\", 2, \"=\", 3))") == "1+2=3"
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end
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end
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end

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