Add tests for the `install` subcommand

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

12 files changed, 299 insertions, 26 deletions

diff --git a/Cargo.lock b/Cargo.lock
index c4532da..cea33a5 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -34,6 +34,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "ansi_term"
+version = "0.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d52a9bb7ec0cf484c551830a7ce27bd20d67eac647e1befb56b0be4ee39a55d2"
+dependencies = [
+ "winapi 0.3.8",
+]
+
+[[package]]
 name = "anyhow"
 version = "1.0.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -46,6 +55,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "eab1c04a571841102f5345a8fc0f6bb3d31c315dec879b5c6e42e40ce7ffa34e"
 
 [[package]]
+name = "assert_cmd"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f2475b58cd94eb4f70159f4fd8844ba3b807532fe3131b3373fae060bbe30396"
+dependencies = [
+ "bstr",
+ "doc-comment",
+ "predicates",
+ "predicates-core",
+ "predicates-tree",
+ "wait-timeout",
+]
+
+[[package]]
 name = "atty"
 version = "0.2.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -105,6 +128,17 @@ dependencies = [
 ]
 
 [[package]]
+name = "bstr"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a40b47ad93e1a5404e6c18dec46b628214fee441c70f4ab5d6942142cc268a3d"
+dependencies = [
+ "lazy_static",
+ "memchr",
+ "regex-automata",
+]
+
+[[package]]
 name = "byte-tools"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -151,7 +185,7 @@ version = "2.33.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "37e58ac78573c40708d45522f0d80fa2f01cc4f9b4e2bf749807255454312002"
 dependencies = [
- "ansi_term",
+ "ansi_term 0.11.0",
  "atty",
  "bitflags",
  "strsim",
@@ -190,6 +224,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "diff"
+version = "0.1.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e25ea47919b1560c4e3b7fe0aaab9becf5b84a10325ddf7db0f0ba5e1026499"
+
+[[package]]
 name = "difference"
 version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -214,6 +254,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "doc-comment"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
+
+[[package]]
 name = "dtoa"
 version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -267,7 +313,7 @@ checksum = "f59efc38004c988e4201d11d263b8171f49a2e7ec0bdbb71773433f271504a5e"
 dependencies = [
  "cfg-if 0.1.10",
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.56",
  "winapi 0.3.8",
 ]
 
@@ -438,7 +484,18 @@ checksum = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 dependencies = [
  "cfg-if 0.1.10",
  "libc",
- "wasi",
+ "wasi 0.9.0+wasi-snapshot-preview1",
+]
+
+[[package]]
+name = "getrandom"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c9495705279e7140bf035dde1f6e750c162df8b625267cd52cc44e0b156732c8"
+dependencies = [
+ "cfg-if 1.0.0",
+ "libc",
+ "wasi 0.10.2+wasi-snapshot-preview1",
 ]
 
 [[package]]
@@ -809,6 +866,7 @@ dependencies = [
 name = "mdbook-mermaid"
 version = "0.8.1-alpha.0"
 dependencies = [
+ "assert_cmd",
  "clap",
  "env_logger",
  "log",
@@ -817,6 +875,7 @@ dependencies = [
  "pulldown-cmark",
  "pulldown-cmark-to-cmark",
  "serde_json",
+ "tempfile",
  "toml_edit",
 ]
 
@@ -1050,7 +1109,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "17367f0cc86f2d25802b2c26ee58a7b23faeccf78a396094c13dced0d0182526"
 dependencies = [
  "phf_shared",
- "rand",
+ "rand 0.7.3",
 ]
 
 [[package]]
@@ -1096,9 +1155,9 @@ checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
 [[package]]
 name = "ppv-lite86"
-version = "0.2.6"
+version = "0.2.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "74490b50b9fbe561ac330df47c08f3f33073d2d00c150f719147d7c54522fa1b"
+checksum = "ac74c624d6b2d21f425f752262f42188365d7b8ff1aff74c82e45136510a4857"
 
 [[package]]
 name = "precomputed-hash"
@@ -1107,14 +1166,40 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "925383efa346730478fb4838dbe9137d2a47675ad789c546d150a6e1dd4ab31c"
 
 [[package]]
+name = "predicates"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eeb433456c1a57cc93554dea3ce40b4c19c4057e41c55d4a0f3d84ea71c325aa"
+dependencies = [
+ "difference",
+ "predicates-core",
+]
+
+[[package]]
+name = "predicates-core"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "57e35a3326b75e49aa85f5dc6ec15b41108cf5aee58eabb1f274dd18b73c2451"
+
+[[package]]
+name = "predicates-tree"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "15f553275e5721409451eb85e15fd9a860a6e5ab4496eb215987502b5f5391f2"
+dependencies = [
+ "predicates-core",
+ "treeline",
+]
+
+[[package]]
 name = "pretty_assertions"
-version = "0.6.1"
+version = "0.7.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f81e1644e1b54f5a68959a29aa86cde704219254669da328ecfdf6a1f09d427"
+checksum = "f297542c27a7df8d45de2b0e620308ab883ad232d06c14b76ac3e144bda50184"
 dependencies = [
- "ansi_term",
+ "ansi_term 0.12.1",
  "ctor",
- "difference",
+ "diff",
  "output_vt100",
 ]
 
@@ -1199,22 +1284,44 @@ version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
  "libc",
- "rand_chacha",
- "rand_core",
- "rand_hc",
+ "rand_chacha 0.2.2",
+ "rand_core 0.5.1",
+ "rand_hc 0.2.0",
  "rand_pcg",
 ]
 
 [[package]]
+name = "rand"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0ef9e7e66b4468674bfcb0c81af8b7fa0bb154fa9f28eb840da5c447baeb8d7e"
+dependencies = [
+ "libc",
+ "rand_chacha 0.3.0",
+ "rand_core 0.6.2",
+ "rand_hc 0.3.0",
+]
+
+[[package]]
 name = "rand_chacha"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f4c8ed856279c9737206bf725bf36935d8666ead7aa69b52be55af369d193402"
 dependencies = [
  "ppv-lite86",
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e12735cf05c9e10bf21534da50a147b924d555dc7a547c42e6bb2d5b6017ae0d"
+dependencies = [
+ "ppv-lite86",
+ "rand_core 0.6.2",
 ]
 
 [[package]]
@@ -1223,7 +1330,16 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 dependencies = [
- "getrandom",
+ "getrandom 0.1.14",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34cf66eb183df1c5876e2dcf6b13d57340741e8dc255b48e40a26de954d06ae7"
+dependencies = [
+ "getrandom 0.2.2",
 ]
 
 [[package]]
@@ -1232,7 +1348,16 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca3129af7b92a17112d59ad498c6f81eaf463253766b90396d39ea7a39d6613c"
 dependencies = [
- "rand_core",
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "rand_hc"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3190ef7066a446f2e7f42e239d161e905420ccab01eb967c9eb27d21b2322a73"
+dependencies = [
+ "rand_core 0.6.2",
 ]
 
 [[package]]
@@ -1241,7 +1366,7 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "16abd0c1b639e9eb4d7c50c0b8100b0d0f849be2349829c740fe8e6eb4816429"
 dependencies = [
- "rand_core",
+ "rand_core 0.5.1",
 ]
 
 [[package]]
@@ -1251,6 +1376,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 
 [[package]]
+name = "redox_syscall"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "94341e4e44e24f6b591b59e47a8a027df12e008d73fd5672dbea9cc22f4507d9"
+dependencies = [
+ "bitflags",
+]
+
+[[package]]
 name = "regex"
 version = "1.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1263,6 +1397,15 @@ dependencies = [
 ]
 
 [[package]]
+name = "regex-automata"
+version = "0.1.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae1ded71d66a4a97f5e961fd0cb25a5f366a42a41570d16a763a69c092c26ae4"
+dependencies = [
+ "byteorder",
+]
+
+[[package]]
 name = "regex-syntax"
 version = "0.6.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1471,14 +1614,14 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.1.0"
+version = "3.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
+checksum = "dac1c663cfc93810f88aed9b8941d48cabf856a1b111c29a40439018d870eb22"
 dependencies = [
- "cfg-if 0.1.10",
+ "cfg-if 1.0.0",
  "libc",
- "rand",
- "redox_syscall",
+ "rand 0.8.3",
+ "redox_syscall 0.2.5",
  "remove_dir_all",
  "winapi 0.3.8",
 ]
@@ -1528,7 +1671,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "db8dcfca086c1143c9270ac42a2bbd8a7ee477b78ac8e45b19abfb0cbede4b6f"
 dependencies = [
  "libc",
- "redox_syscall",
+ "redox_syscall 0.1.56",
  "winapi 0.3.8",
 ]
 
@@ -1645,6 +1788,12 @@ dependencies = [
 ]
 
 [[package]]
+name = "treeline"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a7f741b240f1a48843f9b8e0444fb55fb2a4ff67293b50a9179dfd5ea67f8d41"
+
+[[package]]
 name = "try-lock"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1663,7 +1812,7 @@ dependencies = [
  "httparse",
  "input_buffer",
  "log",
- "rand",
+ "rand 0.7.3",
  "sha-1 0.9.1",
  "url",
  "utf-8",
@@ -1783,6 +1932,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 
 [[package]]
+name = "wait-timeout"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9f200f5b12eb75f8c1ed65abd4b2db8a6e1b138a20de009dacee265a2498f3f6"
+dependencies = [
+ "libc",
+]
+
+[[package]]
 name = "walkdir"
 version = "2.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -1837,6 +1995,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
 [[package]]
+name = "wasi"
+version = "0.10.2+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+
+[[package]]
 name = "winapi"
 version = "0.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
diff --git a/Cargo.toml b/Cargo.toml
index ca8ee32..286d083 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,4 +19,6 @@ serde_json = "1.0.57"
 toml_edit = "0.2.0"
 
 [dev-dependencies]
-pretty_assertions = "0.6.1"
+assert_cmd = "1.0.3"
+pretty_assertions = "0.7.1"
+tempfile = "3.2.0"
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"]