Add tests for displaying TSC errors

Author: Gelio

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+## v1.2.0 (2020-11-19)
+
+Features:
+
+1. Display a list of all errors that cannot be ignored.
+
 ## v1.1.0 (2020-11-11)
 
 Features:

src/cli/program.test.ts

@@ -230,6 +230,26 @@ describe('program', () => {
       );
     });
 
+    it('should display the errors that could be ignored', () => {
+      looselyTypeCheckedFiles = ['a', 'b'];
+      ignoredErrorCodes = ['TS1234'];
+      const result = program(cliDependencies, [
+        createErrorLine('a', 'TS1234'),
+        createErrorLine('a', 'TS1597'),
+        createErrorLine('c', 'TS1111'),
+        createErrorLine('c', 'TS1234'),
+        createErrorLine('d', 'TS1234'),
+      ]);
+
+      expect(result?.error).toBe(true);
+      expect(cliDependencies.log).toHaveBeenCalledWith(
+        createErrorLine('c', 'TS1234'),
+      );
+      expect(cliDependencies.log).toHaveBeenCalledWith(
+        createErrorLine('d', 'TS1234'),
+      );
+    });
+
     it('should report the number of files that no longer have to be ignored', () => {
       looselyTypeCheckedFiles = ['a', 'b'];
       ignoredErrorCodes = ['TS1234'];
@@ -266,6 +286,25 @@ describe('program', () => {
       );
     });
 
+    it('should display valid TSC errors', () => {
+      looselyTypeCheckedFiles = ['a', 'b'];
+      ignoredErrorCodes = ['TS1234'];
+      const result = program(cliDependencies, [
+        createErrorLine('a', 'TS1234'),
+        createErrorLine('a', 'TS1597'),
+        createErrorLine('c', 'TS1111'),
+        createErrorLine('c', 'TS1234'),
+      ]);
+
+      expect(result?.error).toBe(true);
+      expect(cliDependencies.log).toHaveBeenCalledWith(
+        createErrorLine('a', 'TS1597'),
+      );
+      expect(cliDependencies.log).toHaveBeenCalledWith(
+        createErrorLine('c', 'TS1111'),
+      );
+    });
+
     it('should report the number of ignored errors that did not occur', () => {
       looselyTypeCheckedFiles = ['a'];
       ignoredErrorCodes = ['TS1111', 'TS2222', 'TS3333'];