cli: snapshot output to svg (#663)

Author: sbdchd

.github/workflows/rust.yml

@@ -8,6 +8,11 @@ on:
       - "**"
   pull_request:
 
+env:
+  RUST_BACKTRACE: 1
+  CARGO_TERM_COLOR: always
+  CLICOLOR: 1
+
 jobs:
   pre_job:
     runs-on: ubuntu-22.04

crates/squawk/src/snapshots/example.svg

@@ -0,0 +1,15 @@
+use snapbox::{cmd::Command, file};
+
+#[test]
+fn example_sql_svg() {
+    let expected = file!["../src/snapshots/example.svg": TermSvg];
+    let bin_path = snapbox::cmd::cargo_bin("squawk");
+    Command::new(bin_path)
+        .env("CLICOLOR_FORCE", "1")
+        .env("SQUAWK_DISABLE_GITHUB_ANNOTATIONS", "1")
+        .arg("../../example.sql")
+        .assert()
+        .code(1) // squawk returns 1 when it finds violations
+        .stderr_eq("")
+        .stdout_eq(expected.raw());
+}