diff --git a/tests/rendered_output.rs b/tests/rendered_output.rs
index f648b72d..0a151a54 100644
--- a/tests/rendered_output.rs
+++ b/tests/rendered_output.rs
@@ -364,24 +364,6 @@ fn able_to_include_playground_files_in_chapters() {
     assert_doesnt_contain_strings(&second, &["{{#playground example.rs}}"]);
 }
 
-/// This makes sure you can include a Rust file with `{{#include ../SUMMARY.md}}`.
-#[test]
-fn able_to_include_files_in_chapters() {
-    let temp = DummyBook::new().build().unwrap();
-    let md = MDBook::load(temp.path()).unwrap();
-    md.build().unwrap();
-
-    let includes = temp.path().join("book/first/includes.html");
-
-    let summary_strings = &[
-        r##"<h1 id="summary"><a class="header" href="#summary">Summary</a></h1>"##,
-        ">First Chapter</a>",
-    ];
-    assert_contains_strings(&includes, summary_strings);
-
-    assert_doesnt_contain_strings(&includes, &["{{#include ../SUMMARY.md::}}"]);
-}
-
 /// Ensure cyclic includes are capped so that no exceptions occur
 #[test]
 fn recursive_includes_are_capped() {
diff --git a/tests/testsuite/includes.rs b/tests/testsuite/includes.rs
new file mode 100644
index 00000000..1e4a7c53
--- /dev/null
+++ b/tests/testsuite/includes.rs
@@ -0,0 +1,25 @@
+//! Tests for include preprocessor.
+
+use crate::prelude::*;
+
+// Basic test for #include.
+#[test]
+fn include() {
+    BookTest::from_dir("includes/all_includes")
+        .check_main_file(
+            "book/includes.html",
+            str![[r##"
+<h1 id="basic-includes"><a class="header" href="#basic-includes">Basic Includes</a></h1>
+<h2 id="sample"><a class="header" href="#sample">Sample</a></h2>
+<p>This is a sample include.</p>
+"##]],
+        )
+        .check_main_file(
+            "book/relative/includes.html",
+            str![[r##"
+<h1 id="relative-includes"><a class="header" href="#relative-includes">Relative Includes</a></h1>
+<h2 id="sample"><a class="header" href="#sample">Sample</a></h2>
+<p>This is a sample include.</p>
+"##]],
+        );
+}
diff --git a/tests/testsuite/includes/all_includes/book.toml b/tests/testsuite/includes/all_includes/book.toml
new file mode 100644
index 00000000..622694be
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/book.toml
@@ -0,0 +1,6 @@
+[book]
+authors = ["Eric Huss"]
+language = "en"
+multilingual = false
+src = "src"
+title = "all_includes"
diff --git a/tests/testsuite/includes/all_includes/src/SUMMARY.md b/tests/testsuite/includes/all_includes/src/SUMMARY.md
new file mode 100644
index 00000000..25a9a15f
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/SUMMARY.md
@@ -0,0 +1,8 @@
+# Summary
+
+- [Basic Includes](./includes.md)
+    - [Relative Includes](./relative/includes.md)
+- [Recursive Includes](./recursive.md)
+- [Include Anchors](./anchors.md)
+- [Rustdoc Includes](./rustdoc.md)
+- [Playground Includes](./playground.md)
diff --git a/tests/testsuite/includes/all_includes/src/anchors.md b/tests/testsuite/includes/all_includes/src/anchors.md
new file mode 100644
index 00000000..0ffbc788
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/anchors.md
@@ -0,0 +1,5 @@
+# Include Anchors
+
+```rust
+{{#include nested-test-with-anchors.rs:myanchor}}
+```
diff --git a/tests/testsuite/includes/all_includes/src/example.rs b/tests/testsuite/includes/all_includes/src/example.rs
new file mode 100644
index 00000000..6b49705c
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/example.rs
@@ -0,0 +1,6 @@
+fn main() {
+    println!("Hello World!");
+#
+#    // You can even hide lines! :D
+#   println!("I am hidden! Expand the code snippet to see me");
+}
diff --git a/tests/testsuite/includes/all_includes/src/includes.md b/tests/testsuite/includes/all_includes/src/includes.md
new file mode 100644
index 00000000..539aa939
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/includes.md
@@ -0,0 +1,4 @@
+# Basic Includes
+
+{{#include sample.md}}
+
diff --git a/tests/testsuite/includes/all_includes/src/nested-test-with-anchors.rs b/tests/testsuite/includes/all_includes/src/nested-test-with-anchors.rs
new file mode 100644
index 00000000..93c61dd4
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/nested-test-with-anchors.rs
@@ -0,0 +1,6 @@
+// This is a test of includes with anchors.
+
+// ANCHOR: myanchor
+// ANCHOR: unendinganchor
+let x = 1;
+// ANCHOR_END: myanchor
diff --git a/tests/testsuite/includes/all_includes/src/partially-included-test-with-anchors.rs b/tests/testsuite/includes/all_includes/src/partially-included-test-with-anchors.rs
new file mode 100644
index 00000000..8e732d0b
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/partially-included-test-with-anchors.rs
@@ -0,0 +1,11 @@
+fn some_other_function() {
+    // ANCHOR: unused-anchor-that-should-be-stripped
+    println!("unused anchor");
+    // ANCHOR_END: unused-anchor-that-should-be-stripped
+}
+
+// ANCHOR: rustdoc-include-anchor
+fn main() {
+    some_other_function();
+}
+// ANCHOR_END: rustdoc-include-anchor
diff --git a/tests/testsuite/includes/all_includes/src/partially-included-test.rs b/tests/testsuite/includes/all_includes/src/partially-included-test.rs
new file mode 100644
index 00000000..915651ea
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/partially-included-test.rs
@@ -0,0 +1,7 @@
+fn some_function() {
+    println!("some function");
+}
+
+fn main() {
+    some_function();
+}
diff --git a/tests/testsuite/includes/all_includes/src/playground.md b/tests/testsuite/includes/all_includes/src/playground.md
new file mode 100644
index 00000000..9c20530c
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/playground.md
@@ -0,0 +1,3 @@
+# Playground Includes
+
+{{#playground example.rs}}
diff --git a/tests/testsuite/includes/all_includes/src/recursive.md b/tests/testsuite/includes/all_includes/src/recursive.md
new file mode 100644
index 00000000..cb82a52f
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/recursive.md
@@ -0,0 +1,2 @@
+Around the world, around the world
+{{#include recursive.md}}
diff --git a/tests/testsuite/includes/all_includes/src/relative/includes.md b/tests/testsuite/includes/all_includes/src/relative/includes.md
new file mode 100644
index 00000000..f0a6fce6
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/relative/includes.md
@@ -0,0 +1,3 @@
+# Relative Includes
+
+{{#include ../sample.md}}
diff --git a/tests/testsuite/includes/all_includes/src/rustdoc.md b/tests/testsuite/includes/all_includes/src/rustdoc.md
new file mode 100644
index 00000000..8a342d90
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/rustdoc.md
@@ -0,0 +1,13 @@
+# Rustdoc Includes
+
+## Rustdoc include adds the rest of the file as hidden
+
+```rust
+{{#rustdoc_include partially-included-test.rs:5:7}}
+```
+
+## Rustdoc include works with anchors too
+
+```rust
+{{#rustdoc_include partially-included-test-with-anchors.rs:rustdoc-include-anchor}}
+```
diff --git a/tests/testsuite/includes/all_includes/src/sample.md b/tests/testsuite/includes/all_includes/src/sample.md
new file mode 100644
index 00000000..91071ef8
--- /dev/null
+++ b/tests/testsuite/includes/all_includes/src/sample.md
@@ -0,0 +1,3 @@
+## Sample
+
+This is a sample include.
diff --git a/tests/testsuite/main.rs b/tests/testsuite/main.rs
index c8630267..d273b992 100644
--- a/tests/testsuite/main.rs
+++ b/tests/testsuite/main.rs
@@ -5,6 +5,7 @@
 mod book_test;
 mod build;
 mod cli;
+mod includes;
 
 mod prelude {
     pub use crate::book_test::BookTest;