Bring SimplePrinter under test

Author: haarts

test/printers/simple_printer_test.dart

@@ -0,0 +1,64 @@
+import 'package:test/test.dart';
+import 'package:logger/logger.dart';
+
+void main() {
+  LogEvent event = LogEvent(
+    Level.debug,
+    "some message",
+    "some error",
+    StackTrace.current,
+  );
+
+  test('represent event on a single line (ignoring stacktrace)', () {
+    var outputs = SimplePrinter().log(event);
+
+    expect(outputs, hasLength(1));
+    expect(outputs[0], '[D]  some message  ERROR: some error');
+  });
+
+  test('print time', () {
+    var printer = SimplePrinter(printTime: true);
+
+    expect(printer.log(event)[0], contains('TIME'));
+  });
+
+  test('omits error when null', () {
+    LogEvent withoutError = LogEvent(
+      Level.debug,
+      "some message",
+      null,
+      StackTrace.current,
+    );
+    var outputs = SimplePrinter().log(withoutError);
+
+    expect(outputs[0], isNot(contains('ERROR')));
+  });
+
+  test('deal with Map type message', () {
+    var withMap = LogEvent(
+      Level.debug,
+      {"foo": 123},
+      "some error",
+      StackTrace.current,
+    );
+
+    expect(
+      SimplePrinter().log(withMap)[0],
+      '[D]  {"foo":123}  ERROR: some error',
+    );
+  });
+
+  test('deal with Iterable type message', () {
+    var withIterable = LogEvent(
+      Level.debug,
+      [1, 2, 3, 4],
+      "some error",
+      StackTrace.current,
+    );
+
+    expect(
+      SimplePrinter().log(withIterable)[0],
+      '[D]  [1,2,3,4]  ERROR: some error',
+    );
+  });
+}