Add Go support

app/cmd/embeds/walkthrough/01-example-unit/04-challenges.md

@@ -31,7 +31,7 @@ When generating challenges with the `learn md` command, you can see explanations
 * short answer
 * number
 * paragraph
-* code snippet--js, py, java, sql (code directly in Learn)
+* code snippet--js, py, java, go, sql (code directly in Learn)
 * custom-snippet--write your own `Dockerfile` and `test.sh` to allow student code to run in a customized container
 * project, testable project (code locally, submit a repo)
 

app/cmd/markdown/questions/golang.go

@@ -0,0 +1,111 @@
+package questions
+
+import (
+	"github.com/spf13/cobra"
+)
+
+func NewGoCommand(params NewQuestionCommandParams) *cobra.Command {
+	params.name = "Go"
+	params.abbr = "go"
+	params.maxTemplate = goTemplate
+	params.minTemplate = goTemplateMin
+	params.long = goLongDescription
+
+	return createQuestionCommand(params)
+}
+
+const goLongDescription = `Go Code Snippet Challenges allow a student to write Go code directly in
+Learn. The submission is evaluated against unit tests that are set up as part
+of the Challenge. The student then sees the standard output from the test
+runner in Learn.
+
+The test runner automatically wraps the submission in ` + "`package main`" + `, so the
+placeholder and tests blocks should not declare a package — just write the
+function, any imports, and the tests.`
+
+const goTemplate = `<!-- >>>>>>>>>>>>>>>>>>>>>> BEGIN CHALLENGE >>>>>>>>>>>>>>>>>>>>>> -->
+<!-- Replace everything in square brackets [] and remove brackets  -->
+
+### !challenge
+
+* type: code-snippet
+* language: golang
+* id: %s
+* title: [text, a short question title]
+<!-- * points: [1] (optional, the number of points for scoring as a checkpoint) -->
+<!-- * topics: [goroutines, channels] (Checkpoints only, optional the topics for analyzing points) -->
+<!-- * test_file: [/path/to/file.txt] (External test file, replaces 'tests' section) -->
+
+##### !question
+
+[markdown, your question]
+
+##### !end-question
+
+##### !placeholder
+
+[the code below is the starting code in the web editor]
+~~~go
+// DoSomething returns true
+func DoSomething() bool {
+	// return true
+	return false
+}
+~~~
+
+##### !end-placeholder
+
+##### !tests
+
+[the go tests below will run against the student submission]
+~~~go
+import (
+	"strings"
+	"testing"
+)
+
+func TestDoSomething(t *testing.T) {
+	if !DoSomething() {
+		t.Errorf("%s should return true", strings.ToLower("DoSomething"))
+	}
+}
+~~~
+
+##### !end-tests
+
+<optional-attributes>
+
+### !end-challenge
+
+<!-- ======================= END CHALLENGE ======================= -->`
+
+const goTemplateMin = `<!-- >>>>>>>>>>>>>>>>>>>>>> BEGIN CHALLENGE >>>>>>>>>>>>>>>>>>>>>> -->
+
+### !challenge
+
+* type: code-snippet
+* language: golang
+* id: %s
+* title:
+
+##### !question
+
+
+
+##### !end-question
+
+##### !placeholder
+
+
+
+##### !end-placeholder
+
+##### !tests
+
+
+
+##### !end-tests
+<optional-attributes>
+### !end-challenge
+
+<!-- ======================= END CHALLENGE ======================= -->`

app/cmd/markdown/questions/questions_test.go

@@ -21,6 +21,7 @@ func getTestCases() []testCase {
 	return []testCase{
 		{"checkbox", "cb", NewCheckBoxCommand, checkboxTemplate, checkboxTemplateMin},
 		{"customsnippet", "cs", NewCustomSnippetCommand, customSnippetTemplate, customSnippetTemplateMin},
+		{"go", "go", NewGoCommand, goTemplate, goTemplateMin},
 		{"java", "ja", NewJavaCommand, javaTemplate, javaTemplateMin},
 		{"javascript", "js", NewJavaScriptCommand, javascriptTemplate, javascriptTemplateMin},
 		{"multiplechoice", "mc", NewMultipleChoiceCommand, multipleChoiceTemplate, multipleChoiceTemplateMin},

app/cmd/markdown/root.go

@@ -57,6 +57,7 @@ func addQuestionCommands(c *cobra.Command) {
 		questions.NewPythonCommand,
 		questions.NewSqlCommand,
 		questions.NewRubyCommand,
+		questions.NewGoCommand,
 		questions.NewUploadCommand,
 		questions.NewCustomSnippetCommand,
 		questions.NewProjectCommand,

app/cmd/root.go

@@ -22,7 +22,7 @@ Please set your API token with this command: learn set --api_token=<your_api_tok
 You can get your api token at https://learn-2.galvanize.com/api_token`
 
 // currentReleaseVersion is used to print the version the user currently has downloaded
-const currentReleaseVersion = "v0.10.15"
+const currentReleaseVersion = "v0.10.16"
 
 // rootCmd is the base for all our commands. It currently just checks for all the
 // necessary credentials and prompts the user to set them if they are not there.