lintify PrettierFormatterStep (tests only)

Author: nedtwigg

testlib/src/test/java/com/diffplug/spotless/npm/PrettierFormatterStepTest.java

@@ -136,8 +136,18 @@ void verifyPrettierErrorMessageIsRelayed() throws Exception {
 					npmPathResolver(),
 					new PrettierConfig(null, ImmutableMap.of("parser", "postcss")));
 			try (StepHarnessWithFile stepHarness = StepHarnessWithFile.forStep(this, formatterStep)) {
-				stepHarness.testResourceExceptionMsg("npm/prettier/filetypes/scss/scss.dirty").isEqualTo(
-						"Unexpected response status code at /prettier/format [HTTP 500] -- (Error while formatting: Error: Couldn't resolve parser \"postcss\")");
+				stepHarness.expectLintsOfResource("npm/prettier/filetypes/scss/scss.dirty")
+						.toBe("1-35 prettier-format(prettier-format) com.diffplug.spotless.npm.SimpleRestClient$SimpleRestResponseException: Unexpected response status code at /prettier/format [HTTP 500] -- (Error while formatting: Error: Couldn't resolve parser \"postcss\")",
+								"\tat com.diffplug.spotless.npm.SimpleRestClient.postJson(SimpleRestClient.java:72)",
+								"\tat com.diffplug.spotless.npm.SimpleRestClient.postJson(SimpleRestClient.java:46)",
+								"\tat com.diffplug.spotless.npm.PrettierRestService.format(PrettierRestService.java:46)",
+								"\tat com.diffplug.spotless.npm.PrettierFormatterStep$PrettierFilePathPassingFormatterFunc.applyWithFile(PrettierFormatterStep.java:125)",
+								"\tat com.diffplug.spotless.FormatterFunc$NeedsFile.apply(FormatterFunc.java:174)",
+								"\tat com.diffplug.spotless.FormatterFunc$Closeable$1.apply(FormatterFunc.java:73)",
+								"\tat com.diffplug.spotless.FormatterStepEqualityOnStateSerialization.format(FormatterStepEqualityOnStateSerialization.java:49)",
+								"\tat com.diffplug.spotless.LintState.of(LintState.java:135)",
+								"\tat com.diffplug.spotless.LintState.of(LintState.java:92)",
+								"(... and more)");
 			}
 		}
 	}