Add tests for the `install` subcommand

These test that it modifies the book.toml and compares it against the
expected output.

10 files changed, 107 insertions, 0 deletions

diff --git a/tests/it/empty.toml b/tests/it/empty.toml
new file mode 100644
index 0000000..620da2d
--- /dev/null
+++ b/tests/it/empty.toml
@@ -0,0 +1,2 @@
+[book]
+title = "All mermaid config options missing"
diff --git a/tests/it/empty.toml.output b/tests/it/empty.toml.output
new file mode 100644
index 0000000..c9403c7
--- /dev/null
+++ b/tests/it/empty.toml.output
@@ -0,0 +1,8 @@
+[book]
+title = "All mermaid config options missing"
+[preprocessor]
+[preprocessor.mermaid]
+command = "mdbook-mermaid"
+[output]
+[output.html]
+additional-js =["mermaid.min.js", "mermaid-init.js"]
diff --git a/tests/it/full.toml b/tests/it/full.toml
new file mode 100644
index 0000000..f0b7ad1
--- /dev/null
+++ b/tests/it/full.toml
@@ -0,0 +1,9 @@
+[book]
+title = "mdbook-mermaid fully configured"
+
+[preprocessor.mermaid]
+command = "mdbook-mermaid"
+renderer = ["html"]
+
+[output.html]
+additional-js =["mermaid.min.js", "mermaid-init.js"]
diff --git a/tests/it/full.toml.output b/tests/it/full.toml.output
new file mode 100644
index 0000000..f0b7ad1
--- /dev/null
+++ b/tests/it/full.toml.output
@@ -0,0 +1,9 @@
+[book]
+title = "mdbook-mermaid fully configured"
+
+[preprocessor.mermaid]
+command = "mdbook-mermaid"
+renderer = ["html"]
+
+[output.html]
+additional-js =["mermaid.min.js", "mermaid-init.js"]
diff --git a/tests/it/install.rs b/tests/it/install.rs
new file mode 100644
index 0000000..c53a1cb
--- /dev/null
+++ b/tests/it/install.rs
@@ -0,0 +1,52 @@
+use std::fs;
+use std::process::Command;
+
+use assert_cmd::prelude::*;
+
+macro_rules! test_install {
+    ($inputfile:expr, $msg:expr) => {
+        let input = include_str!($inputfile);
+        let expected = include_str!(concat!($inputfile, ".output"));
+
+        let tmp = tempfile::tempdir().expect("can't create tempdir");
+
+        let book_toml = tmp.path().join("book.toml");
+        fs::write(&book_toml, input).expect("can't write book.toml");
+
+        let mut cmd = Command::cargo_bin("mdbook-mermaid").unwrap();
+        cmd.arg("install").current_dir(tmp.path());
+        cmd.assert().success();
+
+        let output = fs::read_to_string(&book_toml).expect("can't read book.toml");
+        pretty_assertions::assert_eq!(
+            expected,
+            output,
+            "Mismatched data in {}: {}",
+            $inputfile,
+            $msg
+        );
+
+        assert!(tmp.path().join("mermaid.min.js").exists(), "Failed to copy mermaid.min.js");
+        assert!(tmp.path().join("mermaid-init.js").exists(), "Failed to copy mermaid.min.js");
+    };
+}
+
+#[test]
+fn empty() {
+    test_install!("empty.toml", "should add all configuration options");
+}
+
+#[test]
+fn full() {
+    test_install!("full.toml", "should leave it untouched");
+}
+
+#[test]
+fn some() {
+    test_install!("some.toml", "should add missing configuration options");
+}
+
+#[test]
+fn missing_js() {
+    test_install!("missing-js.toml", "should add missing javascript file");
+}
diff --git a/tests/it/main.rs b/tests/it/main.rs
new file mode 100644
index 0000000..502ae4c
--- /dev/null
+++ b/tests/it/main.rs
@@ -0,0 +1 @@
+mod install;
diff --git a/tests/it/missing-js.toml b/tests/it/missing-js.toml
new file mode 100644
index 0000000..51a463c
--- /dev/null
+++ b/tests/it/missing-js.toml
@@ -0,0 +1,5 @@
+[book]
+title = "Some configuration options are set"
+
+[preprocessor.mermaid]
+command = "mdbook-mermaid"
diff --git a/tests/it/missing-js.toml.output b/tests/it/missing-js.toml.output
new file mode 100644
index 0000000..88a4c0a
--- /dev/null
+++ b/tests/it/missing-js.toml.output
@@ -0,0 +1,8 @@
+[book]
+title = "Some configuration options are set"
+
+[preprocessor.mermaid]
+command = "mdbook-mermaid"
+[output]
+[output.html]
+additional-js =["mermaid.min.js", "mermaid-init.js"]
diff --git a/tests/it/some.toml b/tests/it/some.toml
new file mode 100644
index 0000000..51a463c
--- /dev/null
+++ b/tests/it/some.toml
@@ -0,0 +1,5 @@
+[book]
+title = "Some configuration options are set"
+
+[preprocessor.mermaid]
+command = "mdbook-mermaid"
diff --git a/tests/it/some.toml.output b/tests/it/some.toml.output
new file mode 100644
index 0000000..88a4c0a
--- /dev/null
+++ b/tests/it/some.toml.output
@@ -0,0 +1,8 @@
+[book]
+title = "Some configuration options are set"
+
+[preprocessor.mermaid]
+command = "mdbook-mermaid"
+[output]
+[output.html]
+additional-js =["mermaid.min.js", "mermaid-init.js"]