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import ( "bytes" "strings" "testing"
"tangled.org/core/appview/pages/markup/sanitizer")
func TestMermaidExtension(t *testing.T) { tests := []struct { name string markdown string contains string notContains string }{ { name: "mermaid block produces pre.mermaid", markdown: "```mermaid\ngraph TD\n A-->B\n```", contains: `<pre class="mermaid">`, notContains: `<code class="language-mermaid"`, }, { name: "mermaid block contains diagram source", markdown: "```mermaid\ngraph TD\n A-->B\n```", contains: "graph TD", }, { name: "non-mermaid code block is not affected", markdown: "```go\nfunc main() {}\n```", contains: `<pre class="chroma">`, }, }
for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { md := NewMarkdown("tangled.org")
var buf bytes.Buffer if err := md.Convert([]byte(tt.markdown), &buf); err != nil { t.Fatalf("failed to convert markdown: %v", err) }
result := buf.String() if !strings.Contains(result, tt.contains) { t.Errorf("expected output to contain:\n%s\ngot:\n%s", tt.contains, result) } if tt.notContains != "" && strings.Contains(result, tt.notContains) { t.Errorf("expected output NOT to contain:\n%s\ngot:\n%s", tt.notContains, result) } }) }}
func TestMathExtension(t *testing.T) { tests := []struct { name string markdown string contains string notContains string }{ { name: "inline math produces span with mathjax delimiters", markdown: "the famous $E = mc^2$ equation", contains: `<span class="math inline">\(E = mc^2\)</span>`, }, { name: "block math produces display span", markdown: "$$\n\\frac{a}{b}\n$$", contains: `<span class="math display">\[`, }, { name: "underscores inside math are not treated as emphasis", markdown: "$a_1 + a_2$", contains: `\(a_1 + a_2\)`, notContains: "<em>", }, { name: "non-math dollar usage is left alone", markdown: "it costs $5 today", notContains: `class="math`, }, { // regression: two currency amounts must not be parsed as one // inline math span (the "$5 and $" .. "10" case). name: "currency pair is not math", markdown: "it costs $5 today and $10 tomorrow", contains: "it costs $5 today and $10 tomorrow", notContains: `class="math`, }, { // regression: single-line $$...$$ must keep both the math and the // trailing prose. name: "single-line block keeps trailing prose", markdown: "$$x^2$$ and then prose", contains: "and then prose", }, { // math content with < / & must be escaped so the sanitizer keeps // the span and MathJax reads the literal source. name: "angle brackets in math are escaped", markdown: "$a < b$", contains: `\(a < b\)`, }, }
for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { md := NewMarkdown("tangled.org")
var buf bytes.Buffer if err := md.Convert([]byte(tt.markdown), &buf); err != nil { t.Fatalf("failed to convert markdown: %v", err) }
result := buf.String() if tt.contains != "" && !strings.Contains(result, tt.contains) { t.Errorf("expected output to contain:\n%s\ngot:\n%s", tt.contains, result) } if tt.notContains != "" && strings.Contains(result, tt.notContains) { t.Errorf("expected output NOT to contain:\n%s\ngot:\n%s", tt.notContains, result) } }) }}
// The sanitizer must preserve the carrier spans that MathJax renders client-side.func TestMathSurvivesSanitizer(t *testing.T) { md := NewMarkdown("tangled.org")
var buf bytes.Buffer if err := md.Convert([]byte("inline $x^2$ and block\n\n$$\ny^2\n$$"), &buf); err != nil { t.Fatalf("failed to convert markdown: %v", err) }
out := sanitizer.SanitizeDefault(buf.String())
for _, want := range []string{`class="math inline"`, `class="math display"`} { if !strings.Contains(out, want) { t.Errorf("sanitizer stripped math span; expected %q in:\n%s", want, out) } }}
func TestAtExtension_Rendering(t *testing.T) { tests := []struct { name string markdown string expected string }{ { name: "renders simple at mention", markdown: "Hello @user.tngl.sh!", expected: `<p>Hello <a href="/user.tngl.sh" class="mention">@user.tngl.sh</a>!</p>`, }, { name: "renders multiple at mentions", markdown: "Hi @alice.tngl.sh and @bob.example.com", expected: `<p>Hi <a href="/alice.tngl.sh" class="mention">@alice.tngl.sh</a> and <a href="/bob.example.com" class="mention">@bob.example.com</a></p>`, }, { name: "renders at mention in parentheses", markdown: "Check this out (@user.tngl.sh)", expected: `<p>Check this out (<a href="/user.tngl.sh" class="mention">@user.tngl.sh</a>)</p>`, }, { name: "does not render email", markdown: "Contact me at test@example.com", expected: `<p>Contact me at <a href="mailto:test@example.com">test@example.com</a></p>`, }, { name: "renders at mention with hyphen", markdown: "Follow @user-name.tngl.sh", expected: `<p>Follow <a href="/user-name.tngl.sh" class="mention">@user-name.tngl.sh</a></p>`, }, { name: "renders at mention with numbers", markdown: "@user123.test456.social", expected: `<p><a href="/user123.test456.social" class="mention">@user123.test456.social</a></p>`, }, { name: "at mention at start of line", markdown: "@user.tngl.sh is cool", expected: `<p><a href="/user.tngl.sh" class="mention">@user.tngl.sh</a> is cool</p>`, }, }
for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { md := NewMarkdown("tangled.org")
var buf bytes.Buffer if err := md.Convert([]byte(tt.markdown), &buf); err != nil { t.Fatalf("failed to convert markdown: %v", err) }
result := buf.String() if result != tt.expected+"\n" { t.Errorf("expected:\n%s\ngot:\n%s", tt.expected, result) } }) }}
func TestAtExtension_WithOtherMarkdown(t *testing.T) { tests := []struct { name string markdown string contains string }{ { name: "at mention with bold", markdown: "**Hello @user.tngl.sh**", contains: `<strong>Hello <a href="/user.tngl.sh" class="mention">@user.tngl.sh</a></strong>`, }, { name: "at mention with italic", markdown: "*Check @user.tngl.sh*", contains: `<em>Check <a href="/user.tngl.sh" class="mention">@user.tngl.sh</a></em>`, }, { name: "at mention in list", markdown: "- Item 1\n- @user.tngl.sh\n- Item 3", contains: `<a href="/user.tngl.sh" class="mention">@user.tngl.sh</a>`, }, { name: "at mention in link", markdown: "[@regnault.dev](https://regnault.dev)", contains: `<a href="https://regnault.dev">@regnault.dev</a>`, }, { name: "at mention in link again", markdown: "[check out @regnault.dev](https://regnault.dev)", contains: `<a href="https://regnault.dev">check out @regnault.dev</a>`, }, { name: "at mention in link again, multiline", markdown: "[\ncheck out @regnault.dev](https://regnault.dev)", contains: "<a href=\"https://regnault.dev\">\ncheck out @regnault.dev</a>", }, }
for _, tt := range tests { t.Run(tt.name, func(t *testing.T) { md := NewMarkdown("tangled.org")
var buf bytes.Buffer if err := md.Convert([]byte(tt.markdown), &buf); err != nil { t.Fatalf("failed to convert markdown: %v", err) }
result := buf.String() if !bytes.Contains([]byte(result), []byte(tt.contains)) { t.Errorf("expected output to contain:\n%s\ngot:\n%s", tt.contains, result) } }) }}