Add support for ToBool for json fragments, deal with escaped strings

utils/conversions.go

@@ -469,10 +469,41 @@ func ToBool(env Environment, test interface{}) (bool, error) {
 		return !test.IsZero(), nil
 
 	case string:
-		return test != "", nil
+		return test != "" && strings.ToLower(test) != "false", nil
+
+	case JSONFragment:
+		asString, err := ToString(env, test)
+		if err != nil {
+			return false, err
+		}
+		// is this a number?
+		num, err := ToDecimal(env, asString)
+		if err == nil {
+			return !num.Equals(decimal.Zero), nil
+		}
+
+		noWhite := strings.Join(strings.Fields(asString), "")
+
+		// empty array?
+		if noWhite == "[]" {
+			return false, nil
+		}
+
+		// empty dict
+		if noWhite == "{}" {
+			return false, nil
+		}
+
+		// finally just string version
+		return asString != "" && strings.ToLower(asString) != "false", nil
+	}
+
+	asString, err := ToString(env, test)
+	if err != nil {
+		return false, err
 	}
 
-	return false, fmt.Errorf("ToBool unknown type '%s' with value '%+v'", reflect.TypeOf(test), test)
+	return ToBool(env, asString)
 }
 
 // XType is an an enumeration of the possible types we can deal with

utils/conversions_test.go

@@ -125,6 +125,57 @@ func TestToDecimal(t *testing.T) {
 	}
 }
 
+func TestToBool(t *testing.T) {
+	testResolver := &resolver{"155"}
+
+	var tests = []struct {
+		input    interface{}
+		expected bool
+		hasError bool
+	}{
+		{nil, false, false},
+		{fmt.Errorf("Error"), false, true},
+		{decimal.NewFromFloat(42), true, false},
+		{int(0), false, false},
+		{int(15), true, false},
+		{int32(15), true, false},
+		{int64(15), true, false},
+		{float32(15.5), true, false},
+		{float64(15.5), true, false},
+		{"15.5", true, false},
+		{"lO.5", true, false},
+		{"", false, false},
+		{testResolver, true, false},
+		{NewJSONFragment([]byte(`false`)), false, false},
+		{NewJSONFragment([]byte(`true`)), true, false},
+		{NewJSONFragment([]byte(`[]`)), false, false},
+		{NewJSONFragment([]byte(`15.5`)), true, false},
+		{NewJSONFragment([]byte(`0`)), false, false},
+		{NewJSONFragment([]byte(`[5]`)), true, false},
+		{NewJSONFragment([]byte("{\n}")), false, false},
+		{NewJSONFragment([]byte(`{"one": "two"}`)), true, false},
+		{struct{}{}, false, true},
+	}
+
+	env := NewDefaultEnvironment()
+
+	for _, test := range tests {
+		result, err := ToBool(env, test.input)
+
+		if err != nil && !test.hasError {
+			t.Errorf("Unexpected error calling ToBool on '%v': %s", test.input, err)
+		}
+
+		if err == nil && test.hasError {
+			t.Errorf("Did not receive expected error calling ToBool on '%v': %s", test.input, err)
+		}
+
+		if result != test.expected {
+			t.Errorf("Unexpected result calling ToBool on '%v', got: %s expected: %s", test.input, result, test.expected)
+		}
+	}
+}
+
 func TestToJSON(t *testing.T) {
 	strMap := make(map[string]string)
 	strMap["one"] = "1.0"

utils/json.go

@@ -34,15 +34,30 @@ func (j JSONFragment) Resolve(key string) interface{} {
 	// this is a numerical index, convert to jsonparser format
 	if err == nil {
 		jIdx := "[" + key + "]"
-		val, _, _, err := jsonparser.Get(j.json, jIdx)
+		val, valType, _, err := jsonparser.Get(j.json, jIdx)
 		if err == nil {
-			return JSONFragment{val}
+			if err == nil {
+				if valType == jsonparser.String {
+					strVal, err := jsonparser.ParseString(val)
+					if err == nil {
+						return strVal
+					}
+				}
+				return JSONFragment{val}
+			}
 		}
 	}
-	val, _, _, err := jsonparser.Get(j.json, key)
+	val, valType, _, err := jsonparser.Get(j.json, key)
 	if err != nil {
 		return err
 	}
+
+	if valType == jsonparser.String {
+		strVal, err := jsonparser.ParseString(val)
+		if err == nil {
+			return strVal
+		}
+	}
 	return JSONFragment{val}
 }
 

utils/json_test.go

@@ -13,6 +13,7 @@ func TestJSON(t *testing.T) {
 		{nil, "key", ""},
 		{[]byte(`malformed`), "key", ""},
 		{[]byte(`["one", "two", "three"]`), "0", "one"},
+		{[]byte(`["escaped \"string\""]`), "0", `escaped "string"`},
 		{[]byte(`{"1": "one"}`), "1", "one"},
 		{[]byte(`{"arr": ["one", "two"]}`), "arr[1]", "two"},
 		{[]byte(`{"arr": ["one", "two"]}`), "arr.1", "two"},