[test] Remove / move *.js tests from test/ (#6163)

`wasm2js.asserts.js` and `wasm2js.traps.js` seem to be used in wasm2js
asserts test:
https://github.com/WebAssembly/binaryen/blob/1d615b38dd4152494d2f4d3520c8b1d917624a30/scripts/test/wasm2js.py#L28
https://github.com/WebAssembly/binaryen/blob/1d615b38dd4152494d2f4d3520c8b1d917624a30/scripts/test/wasm2js.py#L126-L127

But other `*.js` tests in `test/` don't seem to be used anywhere. Please
let me know if they are actually being used.

This moves `wasm2js.asserts.js` and `wasm2js.traps.js`, which are only
used in wasmjs tests, to `test/wasm2js/`, and deletes all other `*.js`
tests in `test/`.

2 files changed, 180 insertions, 0 deletions

diff --git a/test/wasm2js/wasm2js.asserts.js b/test/wasm2js/wasm2js.asserts.js
new file mode 100644
index 000000000..fb6516106
--- /dev/null
+++ b/test/wasm2js/wasm2js.asserts.js
@@ -0,0 +1,76 @@
+
+    function f32Equal(a, b) {
+       var i = new Int32Array(1);
+       var f = new Float32Array(i.buffer);
+       f[0] = a;
+       var ai = f[0];
+       f[0] = b;
+       var bi = f[0];
+
+       return (isNaN(a) && isNaN(b)) || a == b;
+    }
+
+    function f64Equal(a, b) {
+       var i = new Int32Array(2);
+       var f = new Float64Array(i.buffer);
+       f[0] = a;
+       var ai1 = i[0];
+       var ai2 = i[1];
+       f[0] = b;
+       var bi1 = i[0];
+       var bi2 = i[1];
+
+       return (isNaN(a) && isNaN(b)) || (ai1 == bi1 && ai2 == bi2);
+    }
+
+    function i64Equal(actual_lo, actual_hi, expected_lo, expected_hi) {
+       return (actual_lo | 0) == (expected_lo | 0) && (actual_hi | 0) == (expected_hi | 0);
+    }
+  
+function asmFunc0(imports) {
+ var Math_imul = Math.imul;
+ var Math_fround = Math.fround;
+ var Math_abs = Math.abs;
+ var Math_clz32 = Math.clz32;
+ var Math_min = Math.min;
+ var Math_max = Math.max;
+ var Math_floor = Math.floor;
+ var Math_ceil = Math.ceil;
+ var Math_trunc = Math.trunc;
+ var Math_sqrt = Math.sqrt;
+ function $0() {
+  
+ }
+ 
+ function $1(x, y) {
+  x = x | 0;
+  y = y | 0;
+  return x + y | 0 | 0;
+ }
+ 
+ function $2(x, y) {
+  x = x | 0;
+  y = y | 0;
+  return (x | 0) / (y | 0) | 0 | 0;
+ }
+ 
+ return {
+  "empty": $0, 
+  "add": $1, 
+  "div_s": $2
+ };
+}
+
+var retasmFunc0 = asmFunc0({
+});
+function check1() {
+ retasmFunc0.empty();
+ return 1 | 0;
+}
+
+if (!check1()) throw 'assertion failed: ( assert_return ( invoke empty ) )';
+function check2() {
+ return (retasmFunc0.add(1 | 0, 1 | 0) | 0 | 0) == (2 | 0) | 0;
+}
+
+if (!check2()) throw 'assertion failed: ( assert_return ( invoke add ( i32.const 1 ) ( i32.const 1 ) ) ( i32.const 2 ) )';
diff --git a/test/wasm2js/wasm2js.traps.js b/test/wasm2js/wasm2js.traps.js
new file mode 100644
index 000000000..8f87e2423
--- /dev/null
+++ b/test/wasm2js/wasm2js.traps.js
@@ -0,0 +1,104 @@
+
+    function f32Equal(a, b) {
+       var i = new Int32Array(1);
+       var f = new Float32Array(i.buffer);
+       f[0] = a;
+       var ai = f[0];
+       f[0] = b;
+       var bi = f[0];
+
+       return (isNaN(a) && isNaN(b)) || a == b;
+    }
+
+    function f64Equal(a, b) {
+       var i = new Int32Array(2);
+       var f = new Float64Array(i.buffer);
+       f[0] = a;
+       var ai1 = i[0];
+       var ai2 = i[1];
+       f[0] = b;
+       var bi1 = i[0];
+       var bi2 = i[1];
+
+       return (isNaN(a) && isNaN(b)) || (ai1 == bi1 && ai2 == bi2);
+    }
+
+    function i64Equal(actual_lo, actual_hi, expected_lo, expected_hi) {
+       return (actual_lo | 0) == (expected_lo | 0) && (actual_hi | 0) == (expected_hi | 0);
+    }
+  
+function asmFunc0(imports) {
+ var Math_imul = Math.imul;
+ var Math_fround = Math.fround;
+ var Math_abs = Math.abs;
+ var Math_clz32 = Math.clz32;
+ var Math_min = Math.min;
+ var Math_max = Math.max;
+ var Math_floor = Math.floor;
+ var Math_ceil = Math.ceil;
+ var Math_trunc = Math.trunc;
+ var Math_sqrt = Math.sqrt;
+ function $0() {
+  
+ }
+ 
+ function $1(x, y) {
+  x = x | 0;
+  y = y | 0;
+  return x + y | 0 | 0;
+ }
+ 
+ function $2(x, y) {
+  x = x | 0;
+  y = y | 0;
+  return (x | 0) / (y | 0) | 0 | 0;
+ }
+ 
+ return {
+  "empty": $0, 
+  "add": $1, 
+  "div_s": $2
+ };
+}
+
+var retasmFunc0 = asmFunc0({
+});
+function check1() {
+ retasmFunc0.empty();
+ return 1 | 0;
+}
+
+if (!check1()) throw 'assertion failed: ( assert_return ( invoke empty ) )';
+function check2() {
+ return (retasmFunc0.add(1 | 0, 1 | 0) | 0 | 0) == (2 | 0) | 0;
+}
+
+if (!check2()) throw 'assertion failed: ( assert_return ( invoke add ( i32.const 1 ) ( i32.const 1 ) ) ( i32.const 2 ) )';
+function check3() {
+ function f() {
+  return retasmFunc0.div_s(0 | 0, 0 | 0) | 0 | 0;
+ }
+ 
+ try {
+  f();
+ } catch (e) {
+  return e.message.includes("integer divide by zero");
+ };
+ return 0;
+}
+
+if (!check3()) throw 'assertion failed: ( assert_trap ( invoke div_s ( i32.const 0 ) ( i32.const 0 ) ) integer divide by zero )';
+function check4() {
+ function f() {
+  return retasmFunc0.div_s(-2147483648 | 0, -1 | 0) | 0 | 0;
+ }
+ 
+ try {
+  f();
+ } catch (e) {
+  return e.message.includes("integer overflow");
+ };
+ return 0;
+}
+
+if (!check4()) throw 'assertion failed: ( assert_trap ( invoke div_s ( i32.const 0x80000000 ) ( i32.const -1 ) ) integer overflow )';