How to use specialStringArg method of parser Package

...88	c.Assert(stepValue.StepValue, Equals, "simple step with {} and {}")89	c.Assert(stepValue.ParameterizedStepValue, Equals, "simple step with <hello> and <desc>")90}91func (s *MySuite) TestCreateStepValueFromStepWithSpecialParams(c *C) {92	step := &gauge.Step{Value: "a step with {}, {} and {}", Args: []*gauge.StepArg{specialTableArg("hello"), specialStringArg("file:user.txt"), tableArgument()}}93	stepValue := CreateStepValue(step)94	args := stepValue.Args95	c.Assert(len(args), Equals, 3)96	c.Assert(args[0], Equals, "hello")97	c.Assert(args[1], Equals, "file:user.txt")98	c.Assert(args[2], Equals, "table")99	c.Assert(stepValue.StepValue, Equals, "a step with {}, {} and {}")100	c.Assert(stepValue.ParameterizedStepValue, Equals, "a step with <hello>, <file:user.txt> and <table>")101}102func (s *MySuite) TestAddSpecsToMapPopulatesScenarioInExistingSpec(c *C) {103	specsMap := make(map[string]*gauge.Specification)104	scenario1 := &gauge.Scenario{Heading: &gauge.Heading{Value: "scenario1"}}105	scenario2 := &gauge.Scenario{Heading: &gauge.Heading{Value: "scenario2"}}106	heading := &gauge.Heading{Value: "spec heading"}107	specName := "foo.spec"108	spec1 := &gauge.Specification{Heading: heading, FileName: specName, Scenarios: []*gauge.Scenario{scenario1}, Items: []gauge.Item{heading, scenario1}}109	spec2 := &gauge.Specification{Heading: heading, FileName: specName, Scenarios: []*gauge.Scenario{scenario2}, Items: []gauge.Item{heading, scenario2}}110	specsMap[specName] = spec1111	addSpecsToMap([]*gauge.Specification{spec2}, specsMap)112	c.Assert(len(specsMap), Equals, 1)113	c.Assert(len(specsMap[specName].Scenarios), Equals, 2)114	c.Assert(len(specsMap[specName].Items), Equals, 3)115}116func (s *MySuite) TestSpecsFormArgsForMultipleIndexedArgsForOneSpec(c *C) {117	specs, _ := parseSpecsInDirs(gauge.NewConceptDictionary(), []string{filepath.Join("testdata", "sample.spec:3"), filepath.Join("testdata", "sample.spec:6")}, gauge.NewBuildErrors())118	c.Assert(len(specs), Equals, 1)119	c.Assert(len(specs[0].Scenarios), Equals, 2)120}121func (s *MySuite) TestToCheckIfItsIndexedSpec(c *C) {122	c.Assert(isIndexedSpec("specs/hello_world:as"), Equals, false)123	c.Assert(isIndexedSpec("specs/hello_world.spec:0"), Equals, true)124	c.Assert(isIndexedSpec("specs/hello_world.spec:78809"), Equals, true)125	c.Assert(isIndexedSpec("specs/hello_world.spec:09"), Equals, true)126	c.Assert(isIndexedSpec("specs/hello_world.spec:09sa"), Equals, false)127	c.Assert(isIndexedSpec("specs/hello_world.spec:09090"), Equals, true)128	c.Assert(isIndexedSpec("specs/hello_world.spec"), Equals, false)129	c.Assert(isIndexedSpec("specs/hello_world.spec:"), Equals, false)130	c.Assert(isIndexedSpec("specs/hello_world.md"), Equals, false)131}132func (s *MySuite) TestToObtainIndexedSpecName(c *C) {133	specName, scenarioNum := getIndexedSpecName("specs/hello_world.spec:67")134	c.Assert(specName, Equals, "specs/hello_world.spec")135	c.Assert(scenarioNum, Equals, 67)136}137func (s *MySuite) TestToObtainIndexedSpecName1(c *C) {138	specName, scenarioNum := getIndexedSpecName("hello_world.spec:67342")139	c.Assert(specName, Equals, "hello_world.spec")140	c.Assert(scenarioNum, Equals, 67342)141}142func (s *MySuite) TestGetIndex(c *C) {143	c.Assert(getIndex("hello.spec:67"), Equals, 10)144	c.Assert(getIndex("specs/hello.spec:67"), Equals, 16)145	c.Assert(getIndex("specs\\hello.spec:67"), Equals, 16)146	c.Assert(getIndex(":67"), Equals, 0)147	c.Assert(getIndex(""), Equals, 0)148	c.Assert(getIndex("foo"), Equals, 0)149	c.Assert(getIndex(":"), Equals, 0)150	c.Assert(getIndex("f:7a.spec:9"), Equals, 9)151}152func staticArg(val string) *gauge.StepArg {153	return &gauge.StepArg{ArgType: gauge.Static, Value: val}154}155func dynamicArg(val string) *gauge.StepArg {156	return &gauge.StepArg{ArgType: gauge.Dynamic, Value: val}157}158func tableArgument() *gauge.StepArg {159	return &gauge.StepArg{ArgType: gauge.TableArg}160}161func specialTableArg(val string) *gauge.StepArg {162	return &gauge.StepArg{ArgType: gauge.SpecialTable, Name: val}163}164func specialStringArg(val string) *gauge.StepArg {165	return &gauge.StepArg{ArgType: gauge.SpecialString, Name: val}166}...