feat: add fake manifest for analyzers/IDEs (fixes #443)

.cargo/config

@@ -0,0 +1,2 @@
+[alias]
+generate-manifest = "run --features maintainer -- maintainer"

.gitignore

@@ -7,3 +7,4 @@ exercises/clippy/Cargo.toml
 exercises/clippy/Cargo.lock
 .idea
 .vscode
+exercises/Cargo.lock

Cargo.lock

@@ -134,7 +134,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.112 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -431,18 +431,18 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "0.4.30"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "quote"
-version = "0.6.12"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -602,8 +602,9 @@ dependencies = [
  "notify 4.0.15 (registry+https://github.com/rust-lang/crates.io-index)",
  "predicates 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.112 (registry+https://github.com/rust-lang/crates.io-index)",
- "toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "toml 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tooling 0.1.0",
 ]
 
 [[package]]
@@ -639,20 +640,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.92"
+version = "1.0.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde_derive 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_derive 1.0.112 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.92"
+version = "1.0.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.34 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -662,7 +663,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.112 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -682,12 +683,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "syn"
-version = "0.15.34"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
+ "quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -727,10 +728,19 @@ dependencies = [
 
 [[package]]
 name = "toml"
-version = "0.4.10"
+version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.112 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "tooling"
+version = "0.1.0"
+dependencies = [
+ "glob 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.112 (registry+https://github.com/rust-lang/crates.io-index)",
+ "toml 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -750,7 +760,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "unicode-xid"
-version = "0.1.0"
+version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -869,8 +879,8 @@ dependencies = [
 "checksum predicates 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "53e09015b0d3f5a0ec2d4428f7559bb7b3fff341b4e159fedd1d57fac8b939ff"
 "checksum predicates-core 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "06075c3a3e92559ff8929e7a280684489ea27fe44805174c3ebd9328dcb37178"
 "checksum predicates-tree 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8e63c4859013b38a76eca2414c64911fba30def9e3202ac461a2d22831220124"
-"checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
+"checksum proc-macro2 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)" = "beae6331a816b1f65d04c45b078fd8e6c93e8071771f41b8163255bbd8d7c8fa"
-"checksum quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)" = "faf4799c5d274f3868a4aae320a0a182cbd2baee377b378f080e16a23e9d80db"
+"checksum quote 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)" = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
 "checksum rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "6d71dacdc3c88c1fde3885a3be3fbab9f35724e6ce99467f7d9c5026132184ca"
 "checksum rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "556d3a1ca6600bfcbab7c7c91ccb085ac7fbbcd70e008a98742e7847f4f7bcef"
 "checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
@@ -892,22 +902,22 @@ dependencies = [
 "checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
-"checksum serde 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)" = "32746bf0f26eab52f06af0d0aa1984f641341d06d8d673c693871da2d188c9be"
+"checksum serde 1.0.112 (registry+https://github.com/rust-lang/crates.io-index)" = "736aac72d1eafe8e5962d1d1c3d99b0df526015ba40915cb3c49d042e92ec243"
-"checksum serde_derive 1.0.92 (registry+https://github.com/rust-lang/crates.io-index)" = "46a3223d0c9ba936b61c0d2e3e559e3217dbfb8d65d06d26e8b3c25de38bae3e"
+"checksum serde_derive 1.0.112 (registry+https://github.com/rust-lang/crates.io-index)" = "bf0343ce212ac0d3d6afd9391ac8e9c9efe06b533c8d33f660f6390cc4093f57"
 "checksum serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)" = "5a23aa71d4a4d43fdbfaac00eff68ba8a06a51759a89ac3304323e800c4dd40d"
 "checksum slab 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "c111b5bd5695e56cffe5129854aa230b39c93a305372fdbb2668ca2394eea9f8"
 "checksum smallvec 0.6.9 (registry+https://github.com/rust-lang/crates.io-index)" = "c4488ae950c49d403731982257768f48fada354a5203fe81f9bb6f43ca9002be"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
-"checksum syn 0.15.34 (registry+https://github.com/rust-lang/crates.io-index)" = "a1393e4a97a19c01e900df2aec855a29f71cf02c402e2f443b8d2747c25c5dbe"
+"checksum syn 1.0.31 (registry+https://github.com/rust-lang/crates.io-index)" = "b5304cfdf27365b7585c25d4af91b35016ed21ef88f17ced89c7093b43dba8b6"
 "checksum termion 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dde0593aeb8d47accea5392b39350015b5eccb12c0d98044d856983d89548dea"
 "checksum termios 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "72b620c5ea021d75a735c943269bb07d30c9b77d6ac6b236bc8b5c496ef05625"
 "checksum textwrap 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d326610f408c7a4eb6f51c37c330e496b08506c9457c9d34287ecc38809fb060"
 "checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
-"checksum toml 0.4.10 (registry+https://github.com/rust-lang/crates.io-index)" = "758664fc71a3a69038656bee8b6be6477d2a6c315a6b81f7081f591bffa4111f"
+"checksum toml 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "ffc92d160b1eef40665be3a05630d003936a3bc7da7421277846c2613e92c71a"
 "checksum treeline 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a7f741b240f1a48843f9b8e0444fb55fb2a4ff67293b50a9179dfd5ea67f8d41"
 "checksum ucd-util 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "535c204ee4d8434478593480b8f86ab45ec9aae0e83c568ca81abf0fd0e88f86"
 "checksum unicode-width 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "882386231c45df4700b275c7ff55b6f3698780a650026380e72dabe76fa46526"
-"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
+"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum utf8-ranges 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "796f7e48bef87609f7ade7e06495a87d5cd06c7866e6a5cbfceffc558a243737"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum walkdir 2.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "9d9d7ed3431229a144296213105a390676cc49c9b6a72bd19f3176c98e129fa1"

Cargo.toml

@@ -4,14 +4,19 @@ version = "4.1.0"
 authors = ["Marisa <mokou@posteo.de>", "Carol (Nichols || Goulding) <carol.nichols@gmail.com>"]
 edition = "2018"
 
+[features]
+# Internal tooling for maintainers
+maintainer = ["tooling"]
+
 [dependencies]
 clap = "2.32.0"
 indicatif = "0.10.3"
 console = "0.7.7"
 notify = "4.0.15"
-toml = "0.4.10"
+toml = "0.5.6"
 regex = "1.1.6"
 serde = {version = "1.0.10", features = ["derive"]}
+tooling = { path = "./tooling", optional = true }
 
 [[bin]]
 name = "rustlings"
@@ -21,3 +26,4 @@ path = "src/main.rs"
 assert_cmd = "0.11.0"
 predicates = "1.0.1"
 glob = "0.3.0"
+tooling = { path = "./tooling" }

README.md

@@ -103,6 +103,17 @@ exercise:
 rustlings hint myExercise1
 ```
 
+### Using an IDE
+**TL,DR**: open the `exercises/` folder in your editor.
+
+There are several editors and plugins that are able to analyze Rust code for a full blown IDE (or IDE-like) experience. The official language plugin of the Rust project is [rust-analyzer](rust-analyzer), but there are others, like [IntelliJ Rust](intellij) or [rls](rls).
+
+These tools usually rely on the default structure of a Cargo project to perform their analyses. Conversely, Rustlings is conceived as a collection of isolated exercises. Nevertheless, we auto-generate a "fake" project manifest in `exercises/Cargo.toml` that should bypass this mismatch. If you open the `exercises/` folder with your Rust-enabled editor, you should be able to enjoy its capabilities.
+
+[rust-analyzer]: https://rust-analyzer.github.io/
+[rls]: https://github.com/rust-lang/rls
+[intellij]: https://intellij-rust.github.io/
+
 ## Testing yourself
 
 After every couple of sections, there will be a quiz that'll test your knowledge on a bunch of sections at once. These quizzes are found in `exercises/quizN.rs`.

exercises/Cargo.toml

@@ -0,0 +1,286 @@
+# This Cargo.toml is AUTOGENERATED, you shouldn't need to edit it.
+# The `rustling` commands do not rely on this manifest at all, its only purpose
+# is to help editors analyze your code.
+# To regenerate it, run `cargo generate-manifest`.
+[package]
+name = 'exercises'
+version = '0.1.0'
+edition = '2018'
+authors = ['The Rustlings Maintainers']
+publish = false
+
+[[bin]]
+name = 'clippy1'
+path = 'clippy/clippy1.rs'
+
+[[bin]]
+name = 'clippy2'
+path = 'clippy/clippy2.rs'
+
+[[bin]]
+name = 'as_ref_mut'
+path = 'conversions/as_ref_mut.rs'
+
+[[bin]]
+name = 'from_into'
+path = 'conversions/from_into.rs'
+
+[[bin]]
+name = 'from_str'
+path = 'conversions/from_str.rs'
+
+[[bin]]
+name = 'try_from_into'
+path = 'conversions/try_from_into.rs'
+
+[[bin]]
+name = 'using_as'
+path = 'conversions/using_as.rs'
+
+[[bin]]
+name = 'enums1'
+path = 'enums/enums1.rs'
+
+[[bin]]
+name = 'enums2'
+path = 'enums/enums2.rs'
+
+[[bin]]
+name = 'enums3'
+path = 'enums/enums3.rs'
+
+[[bin]]
+name = 'errors1'
+path = 'error_handling/errors1.rs'
+
+[[bin]]
+name = 'errors2'
+path = 'error_handling/errors2.rs'
+
+[[bin]]
+name = 'errors3'
+path = 'error_handling/errors3.rs'
+
+[[bin]]
+name = 'errorsn'
+path = 'error_handling/errorsn.rs'
+
+[[bin]]
+name = 'result1'
+path = 'error_handling/result1.rs'
+
+[[bin]]
+name = 'functions1'
+path = 'functions/functions1.rs'
+
+[[bin]]
+name = 'functions2'
+path = 'functions/functions2.rs'
+
+[[bin]]
+name = 'functions3'
+path = 'functions/functions3.rs'
+
+[[bin]]
+name = 'functions4'
+path = 'functions/functions4.rs'
+
+[[bin]]
+name = 'functions5'
+path = 'functions/functions5.rs'
+
+[[bin]]
+name = 'generics1'
+path = 'generics/generics1.rs'
+
+[[bin]]
+name = 'generics2'
+path = 'generics/generics2.rs'
+
+[[bin]]
+name = 'generics3'
+path = 'generics/generics3.rs'
+
+[[bin]]
+name = 'if1'
+path = 'if/if1.rs'
+
+[[bin]]
+name = 'if2'
+path = 'if/if2.rs'
+
+[[bin]]
+name = 'macros1'
+path = 'macros/macros1.rs'
+
+[[bin]]
+name = 'macros2'
+path = 'macros/macros2.rs'
+
+[[bin]]
+name = 'macros3'
+path = 'macros/macros3.rs'
+
+[[bin]]
+name = 'macros4'
+path = 'macros/macros4.rs'
+
+[[bin]]
+name = 'modules1'
+path = 'modules/modules1.rs'
+
+[[bin]]
+name = 'modules2'
+path = 'modules/modules2.rs'
+
+[[bin]]
+name = 'move_semantics1'
+path = 'move_semantics/move_semantics1.rs'
+
+[[bin]]
+name = 'move_semantics2'
+path = 'move_semantics/move_semantics2.rs'
+
+[[bin]]
+name = 'move_semantics3'
+path = 'move_semantics/move_semantics3.rs'
+
+[[bin]]
+name = 'move_semantics4'
+path = 'move_semantics/move_semantics4.rs'
+
+[[bin]]
+name = 'option1'
+path = 'option/option1.rs'
+
+[[bin]]
+name = 'option2'
+path = 'option/option2.rs'
+
+[[bin]]
+name = 'primitive_types1'
+path = 'primitive_types/primitive_types1.rs'
+
+[[bin]]
+name = 'primitive_types2'
+path = 'primitive_types/primitive_types2.rs'
+
+[[bin]]
+name = 'primitive_types3'
+path = 'primitive_types/primitive_types3.rs'
+
+[[bin]]
+name = 'primitive_types4'
+path = 'primitive_types/primitive_types4.rs'
+
+[[bin]]
+name = 'primitive_types5'
+path = 'primitive_types/primitive_types5.rs'
+
+[[bin]]
+name = 'primitive_types6'
+path = 'primitive_types/primitive_types6.rs'
+
+[[bin]]
+name = 'quiz1'
+path = 'quiz1.rs'
+
+[[bin]]
+name = 'quiz2'
+path = 'quiz2.rs'
+
+[[bin]]
+name = 'quiz3'
+path = 'quiz3.rs'
+
+[[bin]]
+name = 'quiz4'
+path = 'quiz4.rs'
+
+[[bin]]
+name = 'arc1'
+path = 'standard_library_types/arc1.rs'
+
+[[bin]]
+name = 'box1'
+path = 'standard_library_types/box1.rs'
+
+[[bin]]
+name = 'iterators2'
+path = 'standard_library_types/iterators2.rs'
+
+[[bin]]
+name = 'iterators3'
+path = 'standard_library_types/iterators3.rs'
+
+[[bin]]
+name = 'iterators4'
+path = 'standard_library_types/iterators4.rs'
+
+[[bin]]
+name = 'strings1'
+path = 'strings/strings1.rs'
+
+[[bin]]
+name = 'strings2'
+path = 'strings/strings2.rs'
+
+[[bin]]
+name = 'structs1'
+path = 'structs/structs1.rs'
+
+[[bin]]
+name = 'structs2'
+path = 'structs/structs2.rs'
+
+[[bin]]
+name = 'structs3'
+path = 'structs/structs3.rs'
+
+[[bin]]
+name = 'tests1'
+path = 'tests/tests1.rs'
+
+[[bin]]
+name = 'tests2'
+path = 'tests/tests2.rs'
+
+[[bin]]
+name = 'tests3'
+path = 'tests/tests3.rs'
+
+[[bin]]
+name = 'threads1'
+path = 'threads/threads1.rs'
+
+[[bin]]
+name = 'traits1'
+path = 'traits/traits1.rs'
+
+[[bin]]
+name = 'traits2'
+path = 'traits/traits2.rs'
+
+[[bin]]
+name = 'variables1'
+path = 'variables/variables1.rs'
+
+[[bin]]
+name = 'variables2'
+path = 'variables/variables2.rs'
+
+[[bin]]
+name = 'variables3'
+path = 'variables/variables3.rs'
+
+[[bin]]
+name = 'variables4'
+path = 'variables/variables4.rs'
+
+[[bin]]
+name = 'variables5'
+path = 'variables/variables5.rs'
+
+[[bin]]
+name = 'variables6'
+path = 'variables/variables6.rs'

src/main.rs

@@ -23,7 +23,7 @@ mod run;
 mod verify;
 
 fn main() {
-    let matches = App::new("rustlings")
+    let app = App::new("rustlings")
         .version(crate_version!())
         .author("Olivia Hugger, Carol Nichols")
         .about("Rustlings is a collection of small exercises to get you used to writing and reading Rust code")
@@ -53,8 +53,18 @@ fn main() {
                 .alias("h")
                 .about("Returns a hint for the current exercise")
                 .arg(Arg::with_name("name").required(true).index(1)),
-        )
+        );
-        .get_matches();
+
+    let matches;
+    #[cfg(feature = "maintainer")]
+    {
+        let app = app.subcommand(SubCommand::with_name("maintainer"));
+        matches = app.get_matches();
+    }
+    #[cfg(not(feature = "maintainer"))]
+    {
+        matches = app.get_matches();
+    }
 
     if matches.subcommand_name().is_none() {
         println!();
@@ -88,6 +98,13 @@ fn main() {
     let exercises = toml::from_str::<ExerciseList>(toml_str).unwrap().exercises;
     let verbose = matches.is_present("nocapture");
 
+    #[cfg(feature = "maintainer")]
+    {
+        if matches.subcommand_matches("maintainer").is_some() {
+            maintainer();
+        }
+    }
+
     if let Some(ref matches) = matches.subcommand_matches("run") {
         let name = matches.value_of("name").unwrap();
 
@@ -217,3 +234,9 @@ fn rustc_exists() -> bool {
         .map(|status| status.success())
         .unwrap_or(false)
 }
+
+#[cfg(feature = "maintainer")]
+fn maintainer() {
+    let manifest = tooling::generate(&Path::new("exercises"));
+    fs::write("exercises/Cargo.toml", manifest).unwrap();
+}

tests/integration_tests.rs

@@ -1,8 +1,5 @@
 use assert_cmd::prelude::*;
-use glob::glob;
 use predicates::boolean::PredicateBooleanExt;
-use std::fs::File;
-use std::io::Read;
 use std::process::Command;
 
 #[test]
@@ -121,23 +118,6 @@ fn get_hint_for_single_test() {
         .stdout("Hello!\n");
 }
 
-#[test]
-fn all_exercises_require_confirmation() {
-    for exercise in glob("exercises/**/*.rs").unwrap() {
-        let path = exercise.unwrap();
-        let source = {
-            let mut file = File::open(&path).unwrap();
-            let mut s = String::new();
-            file.read_to_string(&mut s).unwrap();
-            s
-        };
-        source.matches("// I AM NOT DONE").next().expect(&format!(
-            "There should be an `I AM NOT DONE` annotation in {:?}",
-            path
-        ));
-    }
-}
-
 #[test]
 fn run_compile_exercise_does_not_prompt() {
     Command::cargo_bin("rustlings")

tests/project_consistency.rs

@@ -0,0 +1,30 @@
+use glob::glob;
+use std::fs;
+use std::path::{Path, PathBuf};
+
+#[test]
+fn all_exercises_require_confirmation() {
+    for path in all_exercises() {
+        let source = fs::read_to_string(&path).unwrap();
+        source.matches("// I AM NOT DONE").next().expect(&format!(
+            "There should be an `I AM NOT DONE` annotation in {:?}",
+            path
+        ));
+    }
+}
+
+#[test]
+fn cargo_toml_is_up_to_date() {
+    let exercises_manifest = fs::read_to_string("exercises/Cargo.toml").unwrap();
+    let generated_manifest = tooling::generate(&Path::new("exercises"));
+    assert_eq!(
+        generated_manifest, exercises_manifest,
+        "exercises/Cargo.toml is not up to date, run `cargo generate-manifest`"
+    );
+}
+
+fn all_exercises() -> impl Iterator<Item = PathBuf> {
+    glob("exercises/**/*.rs")
+        .unwrap()
+        .map(|result| result.expect("Unable to traverse exercises folder"))
+}

tooling/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "tooling"
+version = "0.1.0"
+authors = ["The Rustlings Maintainers"]
+edition = "2018"
+publish = false
+
+[dependencies]
+glob = "0.3.0"
+serde = { version = "1.0.112", feature = ["derive"] }
+toml = "0.5.6"

tooling/src/lib.rs

@@ -0,0 +1,79 @@
+use glob::glob;
+use serde::Serialize;
+use std::path::Path;
+use toml;
+
+pub fn generate(root: &Path) -> String {
+    let mut bins = vec![];
+
+    let root_glob = {
+        let mut p = root.to_owned();
+        p.push("**");
+        p.push("*.rs");
+        p
+    };
+
+    let mut exercise_paths: Vec<_> = glob(root_glob.to_str().unwrap())
+        .unwrap()
+        .collect::<Result<_, _>>()
+        .expect("Error traversing root");
+
+    exercise_paths.sort();
+
+    for path in &exercise_paths {
+        let name = path
+            .file_stem()
+            .expect("Malformed exercise path")
+            .to_str()
+            .expect("Invalid UTF8 in exercise path")
+            .to_string();
+
+        let target_path = path.strip_prefix(root).unwrap();
+
+        bins.push(Bin {
+            name,
+            path: target_path.to_str().unwrap().to_string(),
+        });
+    }
+
+    let manifest = Manifest {
+        package: Package {
+            name: "exercises",
+            version: "0.1.0",
+            authors: &["The Rustlings Maintainers"],
+            edition: "2018",
+            publish: false,
+        },
+        bin: bins,
+    };
+
+    format!(
+        "# This Cargo.toml is AUTOGENERATED, you shouldn't need to edit it.\n\
+         # The `rustling` commands do not rely on this manifest at all, its only purpose\n\
+         # is to help editors analyze your code.\n\
+         # To regenerate it, run `cargo generate-manifest`.\n\
+         {}",
+        toml::ser::to_string_pretty(&manifest).expect("Invalid toml")
+    )
+}
+
+#[derive(Serialize)]
+struct Manifest {
+    package: Package,
+    bin: Vec<Bin>,
+}
+
+#[derive(Serialize)]
+struct Package {
+    name: &'static str,
+    version: &'static str,
+    edition: &'static str,
+    authors: &'static [&'static str],
+    publish: bool,
+}
+
+#[derive(Serialize)]
+struct Bin {
+    name: String,
+    path: String,
+}