Files
438c5a5cfa feat: markdown renderer (#10682)
* chore: custom notifiers in alert manager

* chore: lint fixs

* chore: fix email linter

* chore: added tracing to msteamsv2 notifier

* feat: alert manager template to template title and notification body

* chore: updated test name + code for timeout errors

* chore: added utils for using variables with $ notation

* chore: exposed templates for alertmanager types

* feat: added preprocessor for alert templater

* chore: hooked preProcess function in expandTitle and body, added labels and annotations in alertdata

* chore: fix lint issues

* chore: added handling for missing variable used in template

* feat: converted alerttemplater to interface and updated tests

* refactor: added extractCommonKV instead of 2 different functions

* test: fix preprocessor test case

* feat: added support for  and  in templating

* chore: lint fix

* chore: renamed the interface

* chore: added test for missing function

* refactor: test case and sb related changed

* refactor: comments and test improvements

* chore: lint fix

* chore: updated comments

* feat: added basic html markdown templater

* chore: updated newline to markdown format

* feat: slack blockkit renderer using goldmark

* test: added test for html rendering

* feat: integrated slack blockit in markdownrenderer package and removed plaintext format

* chore: updated br with new line in test and logs added

* refactor: review comments

* refactor: lint fixes

* chore: updated licenses for notifiers

* chore: updated email notifier from upstream

* feat: return single templating result from  with flag for template type

* fix: variables with symbols in template

* feat: slack mrkdwn renderer

* feat: custom raw html renderer to escape <no value>

* chore: integrated slack mrkdwn renderer and added NoOp formatter

* chore: removed notifier test files

* fix: concurrent rendering in markdown renderer

* refactor: changes as per internal review

* chore: lint issue

* chore: removed special handling for softline break

* refactor: removed logger as markdown renderer dependency

* refactor: changed markdown renderer from interface to package-level functions

---------

Co-authored-by: Srikanth Chekuri <[email protected]>
2026-04-22 21:22:45 +00:00

543 lines
15 KiB
Go

package blockkit
import (
"bytes"
"encoding/json"
"testing"
"github.com/yuin/goldmark"
)
func jsonEqual(a, b string) bool {
var va, vb interface{}
if err := json.Unmarshal([]byte(a), &va); err != nil {
return false
}
if err := json.Unmarshal([]byte(b), &vb); err != nil {
return false
}
ja, _ := json.Marshal(va)
jb, _ := json.Marshal(vb)
return string(ja) == string(jb)
}
func prettyJSON(s string) string {
var v interface{}
if err := json.Unmarshal([]byte(s), &v); err != nil {
return s
}
b, _ := json.MarshalIndent(v, "", " ")
return string(b)
}
func TestRenderer(t *testing.T) {
tests := []struct {
name string
markdown string
expected string
}{
{
name: "empty input",
markdown: "",
expected: `[]`,
},
{
name: "simple paragraph",
markdown: "Hello world",
expected: `[
{
"type": "section",
"text": { "type": "mrkdwn", "text": "Hello world" }
}
]`,
},
{
name: "heading",
markdown: "# My Heading",
expected: `[
{
"type": "section",
"text": { "type": "mrkdwn", "text": "*My Heading*" }
}
]`,
},
{
name: "multiple paragraphs",
markdown: "First paragraph\n\nSecond paragraph",
expected: `[
{
"type": "section",
"text": { "type": "mrkdwn", "text": "First paragraph\nSecond paragraph" }
}
]`,
},
{
name: "todo list ",
markdown: "- [ ] item 1\n- [x] item 2",
expected: `[
{
"type": "rich_text",
"elements": [
{
"border": 0,
"elements": [
{ "elements": [ { "text": "[ ] ", "type": "text" }, { "text": "item 1", "type": "text" } ], "type": "rich_text_section" },
{ "elements": [ { "text": "[x] ", "type": "text" }, { "text": "item 2", "type": "text" } ], "type": "rich_text_section" }
],
"indent": 0,
"style": "bullet",
"type": "rich_text_list"
}
]
}
]`,
},
{
name: "thematic break between paragraphs",
markdown: "Before\n\n---\n\nAfter",
expected: `[
{ "type": "section", "text": { "type": "mrkdwn", "text": "Before" } },
{ "type": "divider" },
{ "type": "section", "text": { "type": "mrkdwn", "text": "After" } }
]`,
},
{
name: "fenced code block with language",
markdown: "```go\nfmt.Println(\"hello\")\n```",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_preformatted",
"border": 0,
"language": "go",
"elements": [
{ "type": "text", "text": "fmt.Println(\"hello\")" }
]
}
]
}
]`,
},
{
name: "indented code block",
markdown: " code line 1\n code line 2",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_preformatted",
"border": 0,
"elements": [
{ "type": "text", "text": "code line 1\ncode line 2" }
]
}
]
}
]`,
},
{
name: "empty fenced code block",
markdown: "```\n```",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_preformatted",
"border": 0,
"elements": [
{ "type": "text", "text": " " }
]
}
]
}
]`,
},
{
name: "simple bullet list",
markdown: "- item 1\n- item 2\n- item 3",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "bullet", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "item 1" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "item 2" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "item 3" }] }
]
}
]
}
]`,
},
{
name: "simple ordered list",
markdown: "1. first\n2. second\n3. third",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "first" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "second" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "third" }] }
]
}
]
}
]`,
},
{
name: "nested bullet list (2 levels)",
markdown: "- item 1\n- item 2\n - sub a\n - sub b\n- item 3",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "bullet", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "item 1" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "item 2" }] }
]
},
{
"type": "rich_text_list", "style": "bullet", "indent": 1, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "sub a" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "sub b" }] }
]
},
{
"type": "rich_text_list", "style": "bullet", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "item 3" }] }
]
}
]
}
]`,
},
{
name: "nested ordered list with offset",
markdown: "1. first\n 1. nested-a\n 2. nested-b\n2. second\n3. third",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "first" }] }
]
},
{
"type": "rich_text_list", "style": "ordered", "indent": 1, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "nested-a" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "nested-b" }] }
]
},
{
"type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0, "offset": 1,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "second" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "third" }] }
]
}
]
}
]`,
},
{
name: "mixed ordered/bullet nesting",
markdown: "1. ordered\n - bullet child\n2. ordered again",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "ordered" }] }
]
},
{
"type": "rich_text_list", "style": "bullet", "indent": 1, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "bullet child" }] }
]
},
{
"type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0, "offset": 1,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "ordered again" }] }
]
}
]
}
]`,
},
{
name: "list items with bold/italic/link/code",
markdown: "- **bold item**\n- _italic item_\n- [link](http://example.com)\n- `code item`",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "bullet", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "bold item", "style": { "bold": true } }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "italic item", "style": { "italic": true } }] },
{ "type": "rich_text_section", "elements": [{ "type": "link", "url": "http://example.com", "text": "link" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "code item", "style": { "code": true } }] }
]
}
]
}
]`,
},
{
name: "table with header and body",
markdown: "| Name | Age |\n|------|-----|\n| Alice | 30 |",
expected: `[
{
"type": "table",
"rows": [
[
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "Name", "style": { "bold": true } }] }
]},
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "Age", "style": { "bold": true } }] }
]}
],
[
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "Alice" }] }
]},
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "30" }] }
]}
]
]
}
]`,
},
{
name: "blockquote",
markdown: "> quoted text",
expected: `[
{
"type": "section",
"text": { "type": "mrkdwn", "text": "> quoted text" }
}
]`,
},
{
name: "blockquote with nested list",
markdown: "> item 1\n> > item 2\n> > item 3",
expected: `[
{
"text": {
"text": "> item 1\n> > item 2\n> > item 3",
"type": "mrkdwn"
},
"type": "section"
}
]`,
},
{
name: "inline formatting in paragraph",
markdown: "This is **bold** and _italic_ and ~strike~ and `code`",
expected: `[
{
"type": "section",
"text": { "type": "mrkdwn", "text": "This is *bold* and _italic_ and ~strike~ and ` + "`code`" + `" }
}
]`,
},
{
name: "link in paragraph",
markdown: "Visit [Google](http://google.com)",
expected: `[
{
"type": "section",
"text": { "type": "mrkdwn", "text": "Visit <http://google.com|Google>" }
}
]`,
},
{
name: "image is skipped",
markdown: "![alt](http://example.com/image.png)",
// For image skip the block and return empty array
expected: `[]`,
},
{
name: "paragraph then list then paragraph",
markdown: "Before\n\n- item\n\nAfter",
expected: `[
{ "type": "section", "text": { "type": "mrkdwn", "text": "Before" } },
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "bullet", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "item" }] }
]
}
]
},
{ "type": "section", "text": { "type": "mrkdwn", "text": "After" } }
]`,
},
{
name: "ordered list with start > 1",
markdown: "5. fifth\n6. sixth",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0, "offset": 4,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "fifth" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "sixth" }] }
]
}
]
}
]`,
},
{
name: "deeply nested ordered list (3 levels) with offsets",
markdown: "1. Some things\n\t1. are best left\n2. to the fate\n\t1. of the world\n\t\t1. and then\n\t\t2. this is how\n3. it turns out to be",
expected: `[
{
"type": "rich_text",
"elements": [
{ "type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0,
"elements": [{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "Some things" }] }] },
{ "type": "rich_text_list", "style": "ordered", "indent": 1, "border": 0,
"elements": [{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "are best left" }] }] },
{ "type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0, "offset": 1,
"elements": [{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "to the fate" }] }] },
{ "type": "rich_text_list", "style": "ordered", "indent": 1, "border": 0,
"elements": [{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "of the world" }] }] },
{ "type": "rich_text_list", "style": "ordered", "indent": 2, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "and then" }] },
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "this is how" }] }
]
},
{ "type": "rich_text_list", "style": "ordered", "indent": 0, "border": 0, "offset": 2,
"elements": [{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "it turns out to be" }] }] }
]
}
]`,
},
{
name: "link with bold label in list item",
markdown: "- [**docs**](http://example.com)",
expected: `[
{
"type": "rich_text",
"elements": [
{
"type": "rich_text_list", "style": "bullet", "indent": 0, "border": 0,
"elements": [
{ "type": "rich_text_section", "elements": [{ "type": "link", "url": "http://example.com", "text": "docs" }] }
]
}
]
}
]`,
},
{
name: "table with empty cell",
markdown: "| A | B |\n|---|---|\n| 1 | |",
expected: `[
{
"type": "table",
"rows": [
[
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "A", "style": { "bold": true } }] }
]},
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "B", "style": { "bold": true } }] }
]}
],
[
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "1" }] }
]},
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": " " }] }
]}
]
]
}
]`,
},
{
name: "table with missing column in row",
markdown: "| A | B |\n|---|---|\n| 1 |",
expected: `[
{
"type": "table",
"rows": [
[
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "A", "style": { "bold": true } }] }
]},
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "B", "style": { "bold": true } }] }
]}
],
[
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": "1" }] }
]},
{ "type": "rich_text", "elements": [
{ "type": "rich_text_section", "elements": [{ "type": "text", "text": " " }] }
]}
]
]
}
]`,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
md := goldmark.New(
goldmark.WithExtensions(Extender),
)
var buf bytes.Buffer
if err := md.Convert([]byte(tt.markdown), &buf); err != nil {
t.Fatalf("convert error: %v", err)
}
got := buf.String()
if !jsonEqual(got, tt.expected) {
t.Errorf("JSON mismatch\n\nMarkdown:\n%s\n\nExpected:\n%s\n\nGot:\n%s",
tt.markdown, prettyJSON(tt.expected), prettyJSON(got))
}
})
}
}