Add text to output for fail-fast

README.md

@@ -122,7 +122,7 @@ In no particular order, features that have been implemented and are planned:
     - [ ] Misc. matchers - `exist`, `match`, `satisfy`, `change[.by|.from[.to]|.to|.by_at_least|.by_at_most]`, `have_attributes`
     - [ ] Expectation combining - `and`, `or`
 - [ ] Runner
-    - [ ] Fail fast
+    - [X] Fail fast
     - [ ] Test filtering - by name, context, and tags
     - [ ] Fail on no tests
     - [ ] Randomize test order

src/spectator/formatting/remaining_text.cr

@@ -0,0 +1,15 @@
+module Spectator::Formatting
+  # Text displayed when fail-fast is enabled and tests were skipped.
+  private struct RemainingText
+    # Creates the text object.
+    def initialize(@count : Int32)
+    end
+
+    # Appends the command to the output.
+    def to_s(io)
+      io << "Text execution aborted (fail-fast) - "
+      io << @count
+      io << " examples were omitted."
+    end
+  end
+end

src/spectator/formatting/suite_summary.cr

@@ -14,6 +14,7 @@ module Spectator::Formatting
       @io.puts
       failures(report.failures) if report.failed?
       stats(report)
+      remaining(report) if report.remaining?
       failure_commands(report.failures) if report.failed?
     end
 
@@ -35,6 +36,12 @@ module Spectator::Formatting
       @io.puts StatsCounter.new(report).color
     end
 
+    # Produces the skipped tests text if fail-fast is enabled and tests were omitted.
+    private def remaining(report)
+      text = RemainingText.new(report.remaining_count)
+      @io.puts Color.failure(text)
+    end
+
     # Produces the failure commands section of the summary.
     # This provides a set of commands the user can run
     # to test just the examples that failed.