LibJS: Add Number.parseFloat()

Libraries/LibJS/Runtime/NumberConstructor.cpp

@@ -45,7 +45,7 @@ NumberConstructor::NumberConstructor()
     put_native_function("isInteger", is_integer, 1, attr);
     put_native_function("isNaN", is_nan, 1, attr);
     put_native_function("isSafeInteger", is_safe_integer, 1, attr);
-
+    put("parseFloat", interpreter().global_object().get("parseFloat"));
     put("prototype", interpreter().global_object().number_prototype(), 0);
     put("length", Value(1), Attribute::Configurable);
     put("EPSILON", Value(EPSILON), 0);

Libraries/LibJS/Tests/Number.isFinite.js

@@ -1,6 +1,7 @@
 load("test-common.js");
 
 try {
+    assert(Number.isFinite !== isFinite);
     assert(Number.isFinite.length === 1);
 
     assert(Number.isFinite(0) === true);

Libraries/LibJS/Tests/Number.isNaN.js

@@ -1,6 +1,7 @@
 load("test-common.js");
 
 try {
+    assert(Number.isNaN !== isNaN);
     assert(Number.isNaN.length === 1);
 
     assert(Number.isNaN(0) === false);

Libraries/LibJS/Tests/Number.parseFloat.js

@@ -0,0 +1,11 @@
+load("test-common.js");
+
+try {
+    // Ensuring it's the same function as the global
+    // parseFloat() is enough as that already has tests :^)
+    assert(Number.parseFloat === parseFloat);
+
+    console.log("PASS");
+} catch (e) {
+    console.log("FAIL: " + e);
+}