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-rw-r--r--crates/ra_db/src/fixture.rs60
1 files changed, 59 insertions, 1 deletions
diff --git a/crates/ra_db/src/fixture.rs b/crates/ra_db/src/fixture.rs
index 8248684ee..f8f767091 100644
--- a/crates/ra_db/src/fixture.rs
+++ b/crates/ra_db/src/fixture.rs
@@ -1,4 +1,62 @@
1//! FIXME: write short doc here 1//! Fixtures are strings containing rust source code with optional metadata.
2//! A fixture without metadata is parsed into a single source file.
3//! Use this to test functionality local to one file.
4//!
5//! Simple Example:
6//! ```
7//! r#"
8//! fn main() {
9//! println!("Hello World")
10//! }
11//! "#
12//! ```
13//!
14//! Metadata can be added to a fixture after a `//-` comment.
15//! The basic form is specifying filenames,
16//! which is also how to define multiple files in a single test fixture
17//!
18//! Example using two files in the same crate:
19//! ```
20//! "
21//! //- /main.rs
22//! mod foo;
23//! fn main() {
24//! foo::bar();
25//! }
26//!
27//! //- /foo.rs
28//! pub fn bar() {}
29//! "
30//! ```
31//!
32//! Example using two crates with one file each, with one crate depending on the other:
33//! ```
34//! r#"
35//! //- /main.rs crate:a deps:b
36//! fn main() {
37//! b::foo();
38//! }
39//! //- /lib.rs crate:b
40//! pub fn b() {
41//! println!("Hello World")
42//! }
43//! "#
44//! ```
45//!
46//! Metadata allows specifying all settings and variables
47//! that are available in a real rust project:
48//! - crate names via `crate:cratename`
49//! - dependencies via `deps:dep1,dep2`
50//! - configuration settings via `cfg:dbg=false,opt_level=2`
51//! - environment variables via `env:PATH=/bin,RUST_LOG=debug`
52//!
53//! Example using all available metadata:
54//! ```
55//! "
56//! //- /lib.rs crate:foo deps:bar,baz cfg:foo=a,bar=b env:OUTDIR=path/to,OTHER=foo
57//! fn insert_source_code_here() {}
58//! "
59//! ```
2 60
3use std::str::FromStr; 61use std::str::FromStr;
4use std::sync::Arc; 62use std::sync::Arc;