Bail on first error flag -b.

CHANGELOG.md

@@ -6,6 +6,8 @@
 * `assert` can now receive a custom failure message, which should help write
   better custom assertions.
 
+* Use `-b` to bail after first test failure
+
 1.2.2 - 2014-11-05
 ==================
 

README.markdown

@@ -7,8 +7,7 @@ Description
 -----------
 
 Each test file is run in a forked process to avoid shared state. Once a failure
-is found, you get a report detailing what failed and how to locate the error
-and the rest of the file is skipped.
+is found, you get a report detailing what failed and how to locate the error.
 
 You can use the `scope` command around tests: it guarantees that no instance
 variables are shared between tests.
@@ -149,6 +148,8 @@ with test helpers, use the `-r` flag:
 
 If you want to check which version you are running, try the `-v` flag.
 
+To bail after first test failure, use the `-b` flag.
+
 Installation
 ------------
 

bin/cutest

@@ -1,7 +1,7 @@
 #!/usr/bin/env ruby
 
 if ARGV.empty?
-  puts "usage: cutest [-v] [-r lib] [-o test] [-s scope] file ..."
+  puts "usage: cutest [-v] [-b] [-r lib] [-o test] [-s scope] file ..."
   exit
 end
 
@@ -12,10 +12,11 @@ files = Clap.run ARGV,
   "-r"      => lambda { |file| require file },
   "-o"      => lambda { |name| cutest[:only] = name },
   "-s"      => lambda { |name| cutest[:scope] = name },
+  "-b"      => lambda { cutest[:bail] = true },
   "-v"      => lambda { puts Cutest::VERSION }
 
 if files.any?
   success = Cutest.run(Dir[*files])
-
+  puts
   exit(1) unless success
 end

lib/cutest.rb

@@ -6,15 +6,14 @@ class Cutest
   end
 
   def self.run(files)
-    status = files.all? do |file|
+    test_results = -> (file) do
       run_file(file)
-
       Process.wait2.last.success?
     end
 
-    puts
-
-    status
+    cutest[:bail] ?
+      files.all?(&test_results) :
+      files.map(&test_results).all?
   end
 
   def self.run_file(file)

test/run.rb

@@ -100,3 +100,34 @@
 
   assert_equal 0, $?.to_i
 end
+
+scope "bail on first error" do
+  test "exit on the first error" do
+    expected = ".\n" +
+    "  test: \n" +
+    "  line: assert false\n" +
+    "  file: test/fixtures/outside_block.rb +5\n\n" +
+    "Cutest::AssertionFailed: expression returned false\n\n"
+
+    out = %x{./bin/cutest -b test/fixtures/outside_block.rb test/fixtures/failure.rb}
+
+    assert_equal(expected, out)
+  end
+
+  test "don't exit on the first error" do
+    expected = ".\n" +
+    "  test: \n" +
+    "  line: assert false\n" +
+    "  file: test/fixtures/outside_block.rb +5\n\n" +
+    "Cutest::AssertionFailed: expression returned false\n" +
+    "\n" +
+    "  test: failed assertion\n" +
+    "  line: assert false\n" +
+    "  file: test/fixtures/failure.rb +2\n\n" +
+    "Cutest::AssertionFailed: expression returned false\n\n"
+
+    out = %x{./bin/cutest test/fixtures/outside_block.rb test/fixtures/failure.rb}
+
+    assert_equal(expected, out)
+  end
+end