chore: fix wrong float test (#2952)

Author: HerrCai0907

tests/compiler/number-warn.json

@@ -0,0 +1,18 @@
+{
+  "asc_flags": [
+  ],
+  "stderr": [
+    "AS907: 'NaN' does not compare equal to any other value including itself. Use isNaN(x) instead.",
+    "AS907: 'NaN' does not compare equal to any other value including itself. Use isNaN(x) instead.",
+    "AS907: 'NaN' does not compare equal to any other value including itself. Use isNaN(x) instead.",
+    "AS907: 'NaN' does not compare equal to any other value including itself. Use isNaN(x) instead.",
+    "AS907: 'NaN' does not compare equal to any other value including itself. Use isNaN(x) instead.",
+    "AS907: 'NaN' does not compare equal to any other value including itself. Use isNaN(x) instead.",
+    "AS908: Comparison with -0.0 is sign insensitive. Use Object.is(x, -0.0) if the sign matters.",
+    "AS908: Comparison with -0.0 is sign insensitive. Use Object.is(x, -0.0) if the sign matters.",
+    "AS908: Comparison with -0.0 is sign insensitive. Use Object.is(x, -0.0) if the sign matters.",
+    "AS908: Comparison with -0.0 is sign insensitive. Use Object.is(x, -0.0) if the sign matters.",
+    "AS908: Comparison with -0.0 is sign insensitive. Use Object.is(x, -0.0) if the sign matters.",
+    "AS908: Comparison with -0.0 is sign insensitive. Use Object.is(x, -0.0) if the sign matters."
+  ]
+}

tests/compiler/number-warn.ts

@@ -0,0 +1,20 @@
+
+// Should produce warnings
+
+// always false
+(!(1.0 == NaN));
+(!(NaN == F32.NaN));
+(!(F64.NaN == 1.0));
+
+// always true
+(1.0 != NaN);
+(NaN != F32.NaN);
+(f64.NaN != 1.0);
+
+// always true
+(+.0 == -.0);
+(-.0 != -.0);
+(-.0 == +.0);
+(f32(+.0) == f32(-.0));
+(f32(-.0) != f32(-.0));
+(f32(-.0) == f32(+.0));