[clang-tools-extra] [clang-doc] Add Markdown AST node type definitions (PR #205609)

[Paul Kirth via cfe-commits]

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@@ -0,0 +1,56 @@
+#include "support/Markdown.h"
+#include "llvm/Support/Casting.h"
+#include "gtest/gtest.h"
+
+using namespace clang::doc::markdown;
+using namespace llvm;
+
+namespace {
+
+TEST(MarkdownNodeTest, TextNode) {
+  TextNode N("hello");
+  EXPECT_EQ(N.Kind, NodeKind::NK_Text);
+  EXPECT_EQ(N.Text, "hello");
+}
+
+TEST(MarkdownNodeTest, FencedCodeNode) {
+  StringRef Lines[] = {"int x = 0;"};
+  FencedCodeNode N("cpp", ArrayRef(Lines));
+  EXPECT_EQ(N.Kind, NodeKind::NK_FencedCode);
+  EXPECT_EQ(N.Lang, "cpp");
+  EXPECT_EQ(N.Lines.size(), 1u);
+}
+
+TEST(MarkdownNodeTest, HeadingNode) {
+  HeadingNode N(2, {});
+  EXPECT_EQ(N.Kind, NodeKind::NK_Heading);
+  EXPECT_EQ(N.Level, 2u);
+}
+
+TEST(MarkdownNodeTest, ThematicBreakNode) {
+  ThematicBreakNode N;
+  EXPECT_EQ(N.Kind, NodeKind::NK_ThematicBreak);
+}
+
+TEST(MarkdownNodeTest, InlineCodeNode) {
+  InlineCodeNode N("foo()");
+  EXPECT_EQ(N.Kind, NodeKind::NK_InlineCode);
+  EXPECT_EQ(N.Code, "foo()");
+}
+
+TEST(MarkdownNodeTest, EmphasisNode) {
+  EmphasisNode N({});
+  EXPECT_EQ(N.Kind, NodeKind::NK_Emphasis);
+}
+
+TEST(MarkdownNodeTest, UnorderedListNode) {
+  UnorderedListNode N({});
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ilovepi wrote:

This type of construction seems odd. If you're fine accepting an empty struct, I think it makes sense to have a no args constructor.

https://github.com/llvm/llvm-project/pull/205609