Fixed argument bug (#2)

- Arguments with dashes in the middle where interpreted as flags

Author: ricardorg79

go.mod

@@ -1 +1,3 @@
 module github.com/libgolang/props
+
+go 1.12

lib.go

@@ -13,9 +13,9 @@ type propsStruct struct {
 
 var (
 	globalProps   *propsStruct
-	propEqRegex   = regexp.MustCompile(`--([\w\-]+)=(.*)$`)
-	propRegex     = regexp.MustCompile(`--([\w\-]+)`)
-	propFlagRegex = regexp.MustCompile(`-(\w+)`)
+	propEqRegex   = regexp.MustCompile(`^--([\w\-]+)=(.*)$`)
+	propRegex     = regexp.MustCompile(`^--([\w\-]+)`)
+	propFlagRegex = regexp.MustCompile(`^-(\w+)`)
 )
 
 func init() {

lib_test.go

@@ -49,3 +49,36 @@ func TestGetProp(t *testing.T) {
 		}
 	}
 }
+
+func TestInvalidProps(t *testing.T) {
+	// given
+	args := []string{
+		"arg1",
+		"x-x",
+		"y-y",
+		"bool--bool",
+		"prop",
+		"prop-val",
+	}
+
+	// when
+	globalProps = parseArgs(args)
+
+	resultArgs := GetArgs()
+
+	// then
+	a := len(resultArgs)
+	b := len(args)
+	if a != b {
+		t.Errorf("Expected `%d` arguments, but got `%d`", b, a)
+	} else {
+		var i int = 0
+		for _, v := range args {
+			if v != resultArgs[i] {
+				t.Errorf("arg `%s` should match %s", v, resultArgs[i])
+			}
+			i++
+		}
+	}
+
+}