Replace source file and line with source struct

spec/helpers/errored_example.cr

@@ -5,14 +5,9 @@ class ErroredExample < Spectator::RunnableExample
     "ERROR"
   end
 
-  # Dummy source file.
-  def source_file
-    __FILE__
-  end
-
-  # Dummy source line number.
-  def source_line
-    __LINE__
+  # Dummy source.
+  def source
+    ::Spectator::Source.new(__FILE__, __LINE__)
   end
 
   # Dummy instance.

spec/helpers/failing_example.cr

@@ -5,14 +5,9 @@ class FailingExample < Spectator::RunnableExample
     "FAIL"
   end
 
-  # Dummy source file.
-  def source_file
-    __FILE__
-  end
-
-  # Dummy source line number.
-  def source_line
-    __LINE__
+  # Dummy source.
+  def source
+    ::Spectator::Source.new(__FILE__, __LINE__)
   end
 
   # Dummy instance.

spec/helpers/passing_example.cr

@@ -5,14 +5,9 @@ class PassingExample < Spectator::RunnableExample
     "PASS"
   end
 
-  # Dummy source file.
-  def source_file
-    __FILE__
-  end
-
-  # Dummy source line number.
-  def source_line
-    __LINE__
+  # Dummy source.
+  def source
+    ::Spectator::Source.new(__FILE__, __LINE__)
   end
 
   # Dummy instance.

spec/helpers/spy_example.cr

@@ -6,14 +6,9 @@ class SpyExample < Spectator::RunnableExample
     "SPY"
   end
 
-  # Dummy source file.
-  def source_file
-    __FILE__
-  end
-
-  # Dummy source line number.
-  def source_line
-    __LINE__
+  # Dummy source.
+  def source
+    ::Spectator::Source.new(__FILE__, __LINE__)
   end
 
   # Dummy instance.

spec/pending_example_spec.cr

@@ -5,12 +5,8 @@ class ConcretePendingExample < Spectator::PendingExample
     "PENDING_TEST_EXAMPLE"
   end
 
-  def source_file
-    __FILE__
-  end
-
-  def source_line
-    __LINE__
+  def source
+    ::Spectator::Source.new(__FILE__, __LINE__)
   end
 
   def instance

src/spectator/dsl/structure_dsl.cr

@@ -1354,14 +1354,9 @@ module Spectator::DSL
 
       # Create a class derived from `RunnableExample` to run the test code.
       _spectator_example(Example%example, Test%example, ::Spectator::RunnableExample, {{what}}) do
-        # Source file the example originated from.
-        def source_file
-          {{_source_file}}
-        end
-
-        # Line number in the source file the example originated from.
-        def source_line
-          {{_source_line}}
+        # Source where the example originated from.
+        def source
+          ::Spectator::Source.new({{_source_file}}, {{_source_line}})
         end
 
         # Implement abstract method to run the wrapped example block.
@@ -1408,14 +1403,9 @@ module Spectator::DSL
 
       # Create a class derived from `PendingExample` to skip the test code.
       _spectator_example(Example%example, Test%example, ::Spectator::PendingExample, {{what}}) do
-        # Source file the example originated from.
-        def source_file
-          {{_source_file}}
-        end
-
-        # Line number in the source file the example originated from.
-        def source_line
-          {{_source_line}}
+        # Source where the example originated from.
+        def source
+          ::Spectator::Source.new({{_source_file}}, {{_source_line}})
         end
       end
 

src/spectator/dummy_example.cr

@@ -14,14 +14,9 @@ module Spectator
       "DUMMY"
     end
 
-    # Dummy source file.
-    def source_file
-      __FILE__
-    end
-
-    # Dummy source line number.
-    def source_line
-      __LINE__
+    # Dummy source.
+    def source
+      Source.new(__FILE__, __LINE__)
     end
 
     # Dummy instance.

src/spectator/example.cr

@@ -13,11 +13,8 @@ module Spectator
     # Retrieves the internal wrapped instance.
     abstract def instance
 
-    # Source file the example originated from.
-    abstract def source_file : String
-
-    # Line number in the source file the example originated from.
-    abstract def source_line : Int64
+    # Source where the example originated from.
+    abstract def source : Source
 
     # Runs the example code.
     # A result is returned, which represents the outcome of the test.

src/spectator/formatters/failure_block.cr

@@ -4,9 +4,7 @@ module Spectator::Formatters
     end
 
     def source(io)
-      io << @result.example.source_file
-      io << ':'
-      io << @result.example.source_line
+      @result.example.source.to_s(io)
     end
 
     def to_s(io)