add test cases for float64 and float32

Signed-off-by: Tim Ramlot <[email protected]>

Author: inteon

yaml_test.go

@@ -211,6 +211,8 @@ type UnmarshalTaggedStruct struct {
 	IntBig2           string `json:"1000000000000000000000000000000000000"`
 	IntBig2Scientific string `json:"1e+36"`
 	Float3dot3        string `json:"3.3"`
+	FloatMax32        string `json:"3.4028234663852886e+38"`
+	FloatMax64        string `json:"1.7976931348623157e+308"`
 }
 
 type UnmarshalStruct struct {
@@ -321,6 +323,16 @@ func TestUnmarshal(t *testing.T) {
 			decodeInto: new(UnmarshalTaggedStruct),
 			decoded:    UnmarshalTaggedStruct{Float3dot3: "test"},
 		},
+		"tagged max float32 key": {
+			encoded:    []byte("3.4028234663852886e+38: test"),
+			decodeInto: new(UnmarshalTaggedStruct),
+			decoded:    UnmarshalTaggedStruct{FloatMax32: "test"},
+		},
+		"tagged max float64 key": {
+			encoded:    []byte("1.7976931348623157e+308: test"),
+			decodeInto: new(UnmarshalTaggedStruct),
+			decoded:    UnmarshalTaggedStruct{FloatMax64: "test"},
+		},
 
 		// decode into string field
 		"string value into string field": {
@@ -438,6 +450,38 @@ func TestUnmarshal(t *testing.T) {
 			},
 		},
 
+		// decoding floats
+		"decode max float32 into float32": {
+			encoded:    []byte("3.4028234663852886e+38"),
+			decodeInto: new(float32),
+			decoded:    math.MaxFloat32,
+		},
+		"decode max float32 into interface": {
+			encoded:    []byte("3.4028234663852886e+38"),
+			decodeInto: new(interface{}),
+			decoded:    math.MaxFloat32,
+		},
+		"decode max float32 into string": {
+			encoded:    []byte("3.4028234663852886e+38"),
+			decodeInto: new(string),
+			decoded:    "3.4028234663852886e+38",
+		},
+		"decode max float64 into float64": {
+			encoded:    []byte("1.7976931348623157e+308"),
+			decodeInto: new(float64),
+			decoded:    math.MaxFloat64,
+		},
+		"decode max float64 into interface": {
+			encoded:    []byte("1.7976931348623157e+308"),
+			decodeInto: new(interface{}),
+			decoded:    math.MaxFloat64,
+		},
+		"decode max float64 into string": {
+			encoded:    []byte("1.7976931348623157e+308"),
+			decodeInto: new(string),
+			decoded:    "1.7976931348623157e+308",
+		},
+
 		// duplicate (non-casematched) keys (NOTE: this is very non-ideal behaviour!)
 		"decode duplicate (non-casematched) into nested struct 1": {
 			encoded:    []byte("a:\n  a: 1\n  b: 1\n  c: test\n\nA:\n  a: 2"),