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1 files changed, 208 insertions, 0 deletions

diff --git a/tests/heading_atx.rs b/tests/heading_atx.rs
new file mode 100644
index 0000000..b75d058
--- /dev/null
+++ b/tests/heading_atx.rs
@@ -0,0 +1,208 @@
+extern crate micromark;
+use micromark::micromark;
+#[test]
+fn heading_atx() {
+    assert_eq!(
+        micromark("# foo"),
+        "<h1>foo</h1>",
+        "should support a heading w/ rank 1"
+    );
+
+    assert_eq!(
+        micromark("## foo"),
+        "<h2>foo</h2>",
+        "should support a heading w/ rank 2"
+    );
+
+    assert_eq!(
+        micromark("### foo"),
+        "<h3>foo</h3>",
+        "should support a heading w/ rank 3"
+    );
+
+    assert_eq!(
+        micromark("#### foo"),
+        "<h4>foo</h4>",
+        "should support a heading w/ rank 4"
+    );
+
+    assert_eq!(
+        micromark("##### foo"),
+        "<h5>foo</h5>",
+        "should support a heading w/ rank 5"
+    );
+
+    assert_eq!(
+        micromark("###### foo"),
+        "<h6>foo</h6>",
+        "should support a heading w/ rank 6"
+    );
+
+    assert_eq!(
+        micromark("####### foo"),
+        "<p>####### foo</p>",
+        "should not support a heading w/ rank 7"
+    );
+
+    assert_eq!(
+        micromark("#5 bolt"),
+        "<p>#5 bolt</p>",
+        "should not support a heading for a number sign not followed by whitespace (1)"
+    );
+
+    assert_eq!(
+        micromark("#hashtag"),
+        "<p>#hashtag</p>",
+        "should not support a heading for a number sign not followed by whitespace (2)"
+    );
+
+    // To do: phrasing.
+    // assert_eq!(
+    //     micromark("\\## foo"),
+    //     "<p>## foo</p>",
+    //     "should not support a heading for an escaped number sign"
+    // );
+
+    // assert_eq!(
+    //     micromark("# foo *bar* \\*baz\\*"),
+    //     "<h1>foo <em>bar</em> *baz*</h1>",
+    //     "should support text content in headings"
+    // );
+
+    assert_eq!(
+        micromark("#                  foo                     "),
+        "<h1>foo</h1>",
+        "should support arbitrary initial and final whitespace"
+    );
+
+    assert_eq!(
+        micromark(" ### foo"),
+        "<h3>foo</h3>",
+        "should support an initial space"
+    );
+
+    assert_eq!(
+        micromark("  ## foo"),
+        "<h2>foo</h2>",
+        "should support two initial spaces"
+    );
+
+    assert_eq!(
+        micromark("   # foo"),
+        "<h1>foo</h1>",
+        "should support three initial spaces"
+    );
+
+    assert_eq!(
+        micromark("    # foo"),
+        "<pre><code># foo\n</code></pre>",
+        "should not support four initial spaces"
+    );
+
+    // To do: lazy.
+    // assert_eq!(
+    //     micromark("foo\n    # bar"),
+    //     "<p>foo\n# bar</p>",
+    //     "should not support four initial spaces when interrupting"
+    // );
+
+    assert_eq!(
+        micromark("## foo ##"),
+        "<h2>foo</h2>",
+        "should support a closing sequence (1)"
+    );
+
+    assert_eq!(
+        micromark("  ###   bar    ###"),
+        "<h3>bar</h3>",
+        "should support a closing sequence (2)"
+    );
+
+    assert_eq!(
+        micromark("# foo ##################################"),
+        "<h1>foo</h1>",
+        "should support a closing sequence w/ an arbitrary number of number signs (1)"
+    );
+
+    assert_eq!(
+        micromark("##### foo ##"),
+        "<h5>foo</h5>",
+        "should support a closing sequence w/ an arbitrary number of number signs (2)"
+    );
+
+    assert_eq!(
+        micromark("### foo ###     "),
+        "<h3>foo</h3>",
+        "should support trailing whitespace after a closing sequence"
+    );
+
+    assert_eq!(
+        micromark("### foo ### b"),
+        "<h3>foo ### b</h3>",
+        "should not support other content after a closing sequence"
+    );
+
+    assert_eq!(
+        micromark("# foo#"),
+        "<h1>foo#</h1>",
+        "should not support a closing sequence w/o whitespace before it"
+    );
+
+    // Phrasing.
+    // assert_eq!(
+    //     micromark("### foo \\###"),
+    //     "<h3>foo ###</h3>",
+    //     "should not support an “escaped” closing sequence (1)"
+    // );
+
+    // assert_eq!(
+    //     micromark("## foo #\\##"),
+    //     "<h2>foo ###</h2>",
+    //     "should not support an “escaped” closing sequence (2)"
+    // );
+
+    // assert_eq!(
+    //     micromark("# foo \\#"),
+    //     "<h1>foo #</h1>",
+    //     "should not support an “escaped” closing sequence (3)"
+    // );
+
+    assert_eq!(
+        micromark("****\n## foo\n****"),
+        "<hr />\n<h2>foo</h2>\n<hr />",
+        "should support atx headings when not surrounded by blank lines"
+    );
+
+    assert_eq!(
+        micromark("Foo bar\n# baz\nBar foo"),
+        "<p>Foo bar</p>\n<h1>baz</h1>\n<p>Bar foo</p>",
+        "should support atx headings interrupting paragraphs"
+    );
+
+    // Line endings.
+    assert_eq!(
+        micromark("## \n#\n### ###"),
+        "<h2></h2>\n<h1></h1>\n<h3></h3>",
+        "should support empty atx headings"
+    );
+
+    // To do: block quote.
+    // assert_eq!(
+    //     micromark("> #\na"),
+    //     "<blockquote>\n<h1></h1>\n</blockquote>\n<p>a</p>",
+    //     "should not support lazyness (1)"
+    // );
+
+    // assert_eq!(
+    //     micromark("> a\n#"),
+    //     "<blockquote>\n<p>a</p>\n</blockquote>\n<h1></h1>",
+    //     "should not support lazyness (2)"
+    // );
+
+    // Extensions:
+    // assert_eq!(
+    //   micromark("# a", {extensions: [{disable: {null: ["headingAtx"]}}]}),
+    //   "<p># a</p>",
+    //   "should support turning off heading (atx)"
+    // );
+}