std/encoding/json: add decode test for numbers

Author: mertcandav

std/encoding/json/decode_test.jule

@@ -6,6 +6,49 @@ use "std/conv"
 use "std/encoding"
 use "std/strings"
 use "std/testing"
+use "std/unsafe"
+
+#test
+fn testDecodeNumber(t: &testing::T) {
+	numbers := [
+		"0",
+		"1",
+		"-1",
+		"100",
+		"-100",
+		"0.5",
+		"-0.5",
+		"123.456",
+		"-123.456",
+		"1e3",
+		"1E3",
+		"1e+3",
+		"1e-3",
+		"-1e3",
+		"-1E3",
+		"-1e+3",
+		"-1e-3",
+		"1.23e4",
+		"1.23E4",
+		"1.23e+4",
+		"1.23e-4",
+		"-1.23e4",
+		"-1.23E4",
+		"-1.23e+4",
+		"-1.23e-4",
+		"0.0",
+		"1.0",
+		"2.0e5",
+		"2.0E5",
+	]
+	for i, n in numbers {
+		mut f := f64(0)
+		Decode(unsafe::StrBytes(n), f) else {
+			t.Errorf("#{} test failed", i)
+			continue
+		}
+	}
+}
 
 #test
 fn testDecodeStr(t: &testing::T) {