Add support for sub-index in result blocks

src/spectator/formatting/components/error_result_block.cr

@@ -7,8 +7,8 @@ module Spectator::Formatting::Components
   # Displays information about an error result.
   struct ErrorResultBlock < ResultBlock
     # Creates the component.
-    def initialize(index : Int32, example : Example, @result : ErrorResult)
-      super(index, example)
+    def initialize(example : Example, index : Int32, @result : ErrorResult)
+      super(example, index)
     end
 
     # Content displayed on the second line of the block after the label.

src/spectator/formatting/components/fail_result_block.cr

@@ -11,8 +11,8 @@ module Spectator::Formatting::Components
     @longest_key : Int32
 
     # Creates the component.
-    def initialize(index : Int32, example : Example, result : FailResult)
-      super(index, example)
+    def initialize(example : Example, index : Int32, result : FailResult, subindex = 0)
+      super(example, index, subindex)
       @expectation = result.expectations.find(&.failed?).not_nil!
       @longest_key = @expectation.values.max_of { |(key, _value)| key.to_s.size }
     end

src/spectator/formatting/components/pending_result_block.cr

@@ -7,8 +7,8 @@ module Spectator::Formatting::Components
   # Displays information about a pending result.
   struct PendingResultBlock < ResultBlock
     # Creates the component.
-    def initialize(index : Int32, example : Example, @result : PendingResult)
-      super(index, example)
+    def initialize(example : Example, index : Int32, @result : PendingResult)
+      super(example, index)
     end
 
     # Content displayed on the second line of the block after the label.

src/spectator/formatting/components/result_block.cr

@@ -14,7 +14,7 @@ module Spectator::Formatting::Components
   # ```
   abstract struct ResultBlock < Block
     # Creates the block with the specified *index* and for the given *example*.
-    def initialize(@index : Int32, @example : Example)
+    def initialize(@example : Example, @index : Int32, @subindex : Int32 = 0)
       super()
     end
 
@@ -55,7 +55,9 @@ module Spectator::Formatting::Components
     # Produces the title line.
     private def title_line(io)
       line(io) do
-        io << @index << ") " << title
+        io << @index
+        io << '.' << @subindex if @subindex > 0
+        io << ") " << title
       end
     end
 
@@ -80,7 +82,14 @@ module Spectator::Formatting::Components
 
     # Computes the number of spaces the index takes
     private def index_digit_count
-      (Math.log(@index.to_f + 1) / Math::LOG10).ceil.to_i
+      count = digit_count(@index)
+      count += 1 + digit_count(@subindex) if @subindex > 0
+      count
+    end
+
+    # Computes the number of spaces an integer takes.
+    private def digit_count(integer)
+      (Math.log(integer.to_f + 1) / Math::LOG10).ceil.to_i
     end
   end
 end

src/spectator/formatting/summary.cr

@@ -25,7 +25,7 @@ module Spectator::Formatting
       io.puts
       examples.each_with_index(1) do |example, index|
         result = example.result.as(PendingResult)
-        io.puts Components::PendingResultBlock.new(index, example, result)
+        io.puts Components::PendingResultBlock.new(example, index, result)
       end
     end
 
@@ -39,9 +39,9 @@ module Spectator::Formatting
       io.puts
       examples.each_with_index(1) do |example, index|
         if result = example.result.as?(ErrorResult)
-          io.puts Components::ErrorResultBlock.new(index, example, result)
+          io.puts Components::ErrorResultBlock.new(example, index, result)
         elsif result = example.result.as?(FailResult)
-          io.puts Components::FailResultBlock.new(index, example, result)
+          io.puts Components::FailResultBlock.new(example, index, result)
         end
       end
     end