Ensure yamlfmt honors trunk configs

linters/yamlfmt/plugin.yaml

@@ -25,7 +25,7 @@ lint:
         - name: format
           output: rewrite
           run: yamlfmt ${target}
-          run_from: ${parent}
+          run_from: workspace
           success_codes: [0, 1]
           cache_results: true
           formatter: true
@@ -38,6 +38,11 @@ lint:
         - .yamlfmt.yml
         - yamlfmt.yaml
         - yamlfmt.yml
+        - .trunk/configs/.yamlfmt
+        - .trunk/configs/.yamlfmt.yaml
+        - .trunk/configs/.yamlfmt.yml
+        - .trunk/configs/yamlfmt.yaml
+        - .trunk/configs/yamlfmt.yml
       suggest_if: config_present
       version_command:
         parse_regex: ${semver}

linters/yamlfmt/test_data/config.in.yaml

@@ -0,0 +1,3 @@
+description: >-
+  Builds and pushes a Docker image to a container registry.
+  Requires authentication to be handled by the calling workflow.

linters/yamlfmt/test_data/yamlfmt_v0.20.0_config.fmt.shot

@@ -0,0 +1,8 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Testing formatter yamlfmt test config 1`] = `
+"description: >-
+  Builds and pushes a Docker image to a container registry.
+  Requires authentication to be handled by the calling workflow.
+"
+`;

linters/yamlfmt/yamlfmt.test.ts

@@ -1,9 +1,25 @@
 import { linterCheckTest, linterFmtTest } from "tests";
+import { TrunkLintDriver } from "tests/driver";
 import { osTimeoutMultiplier } from "tests/utils";
 
 // This install is quite slow on some Linux machines.
 jest.setTimeout(600000 * osTimeoutMultiplier);
 
+const writeTrunkConfig = (driver: TrunkLintDriver) => {
+  const config = `formatter:
+  type: basic
+  scan_folded_as_literal: true
+  retain_line_breaks: true
+`;
+  driver.writeFile(".trunk/configs/.yamlfmt.yml", config);
+};
+
 linterCheckTest({ linterName: "yamlfmt", namedTestPrefixes: ["empty"] });
 
 linterFmtTest({ linterName: "yamlfmt", namedTestPrefixes: ["basic"] });
+
+linterFmtTest({
+  linterName: "yamlfmt",
+  namedTestPrefixes: ["config"],
+  preCheck: writeTrunkConfig,
+});