Vendoring bats libraries.

Signed-off-by: Chad Metcalf <chad@docker.com>

lib/bats-assert/test/assert_output.bats

@@ -0,0 +1,285 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+#
+# Literal matching
+#
+
+# Correctness
+@test "assert_output() <expected>: returns 0 if <expected> equals \`\$output'" {
+  run echo 'a'
+  run assert_output 'a'
+  assert_test_pass
+}
+
+@test "assert_output() <expected>: returns 1 and displays details if <expected> does not equal \`\$output'" {
+  run echo 'b'
+  run assert_output 'a'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- output differs --
+expected : a
+actual   : b
+--
+ERR_MSG
+}
+
+@test 'assert_output(): succeeds if output is non-empty' {
+  run echo 'a'
+  run assert_output
+
+  assert_test_pass
+}
+
+@test 'assert_output(): fails if output is empty' {
+  run echo ''
+  run assert_output
+
+  assert_test_fail <<'ERR_MSG'
+
+-- no output --
+expected non-empty output, but output was empty
+--
+ERR_MSG
+}
+
+@test 'assert_output() - : reads <expected> from STDIN' {
+  run echo 'a'
+  run assert_output - <<STDIN
+a
+STDIN
+
+  assert_test_pass
+}
+
+@test 'assert_output() --stdin : reads <expected> from STDIN' {
+  run echo 'a'
+  run assert_output --stdin <<STDIN
+a
+STDIN
+
+  assert_test_pass
+}
+
+# Output formatting
+@test "assert_output() <expected>: displays details in multi-line format if \`\$output' is longer than one line" {
+  run printf 'b 0\nb 1'
+  run assert_output 'a'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- output differs --
+expected (1 lines):
+  a
+actual (2 lines):
+  b 0
+  b 1
+--
+ERR_MSG
+}
+
+@test 'assert_output() <expected>: displays details in multi-line format if <expected> is longer than one line' {
+  run echo 'b'
+  run assert_output $'a 0\na 1'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- output differs --
+expected (2 lines):
+  a 0
+  a 1
+actual (1 lines):
+  b
+--
+ERR_MSG
+}
+
+# Options
+@test 'assert_output() <expected>: performs literal matching by default' {
+  run echo 'a'
+  run assert_output '*'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- output differs --
+expected : *
+actual   : a
+--
+ERR_MSG
+}
+
+
+#
+# Partial matching: `-p' and `--partial'
+#
+
+@test 'assert_output() -p <partial>: enables partial matching' {
+  run echo 'abc'
+  run assert_output -p 'b'
+  assert_test_pass
+}
+
+@test 'assert_output() --partial <partial>: enables partial matching' {
+  run echo 'abc'
+  run assert_output --partial 'b'
+  assert_test_pass
+}
+
+# Correctness
+@test "assert_output() --partial <partial>: returns 0 if <partial> is a substring in \`\$output'" {
+  run printf 'a\nb\nc'
+  run assert_output --partial 'b'
+  assert_test_pass
+}
+
+@test "assert_output() --partial <partial>: returns 1 and displays details if <partial> is not a substring in \`\$output'" {
+  run echo 'b'
+  run assert_output --partial 'a'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- output does not contain substring --
+substring : a
+output    : b
+--
+ERR_MSG
+}
+
+# Output formatting
+@test "assert_output() --partial <partial>: displays details in multi-line format if \`\$output' is longer than one line" {
+  run printf 'b 0\nb 1'
+  run assert_output --partial 'a'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- output does not contain substring --
+substring (1 lines):
+  a
+output (2 lines):
+  b 0
+  b 1
+--
+ERR_MSG
+}
+
+@test 'assert_output() --partial <partial>: displays details in multi-line format if <partial> is longer than one line' {
+  run echo 'b'
+  run assert_output --partial $'a 0\na 1'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- output does not contain substring --
+substring (2 lines):
+  a 0
+  a 1
+output (1 lines):
+  b
+--
+ERR_MSG
+}
+
+
+#
+# Regular expression matching: `-e' and `--regexp'
+#
+
+@test 'assert_output() -e <regexp>: enables regular expression matching' {
+  run echo 'abc'
+  run assert_output -e '^a'
+  assert_test_pass
+}
+
+@test 'assert_output() --regexp <regexp>: enables regular expression matching' {
+  run echo 'abc'
+  run assert_output --regexp '^a'
+  assert_test_pass
+}
+
+# Correctness
+@test "assert_output() --regexp <regexp>: returns 0 if <regexp> matches \`\$output'" {
+  run printf 'a\nb\nc'
+  run assert_output --regexp '.*b.*'
+  assert_test_pass
+}
+
+@test "assert_output() --regexp <regexp>: returns 1 and displays details if <regexp> does not match \`\$output'" {
+  run echo 'b'
+  run assert_output --regexp '.*a.*'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- regular expression does not match output --
+regexp : .*a.*
+output : b
+--
+ERR_MSG
+}
+
+# Output formatting
+@test "assert_output() --regexp <regexp>: displays details in multi-line format if \`\$output' is longer than one line" {
+  run printf 'b 0\nb 1'
+  run assert_output --regexp '.*a.*'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- regular expression does not match output --
+regexp (1 lines):
+  .*a.*
+output (2 lines):
+  b 0
+  b 1
+--
+ERR_MSG
+}
+
+@test 'assert_output() --regexp <regexp>: displays details in multi-line format if <regexp> is longer than one line' {
+  run echo 'b'
+  run assert_output --regexp $'.*a\nb.*'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- regular expression does not match output --
+regexp (2 lines):
+  .*a
+  b.*
+output (1 lines):
+  b
+--
+ERR_MSG
+}
+
+# Error handling
+@test 'assert_output() --regexp <regexp>: returns 1 and displays an error message if <regexp> is not a valid extended regular expression' {
+  run assert_output --regexp '[.*'
+
+  assert_test_fail <<'ERR_MSG'
+
+-- ERROR: assert_output --
+Invalid extended regular expression: `[.*'
+--
+ERR_MSG
+}
+
+
+#
+# Common
+#
+
+@test "assert_output(): \`--partial' and \`--regexp' are mutually exclusive" {
+  run assert_output --partial --regexp
+
+  assert_test_fail <<'ERR_MSG'
+
+-- ERROR: assert_output --
+`--partial' and `--regexp' are mutually exclusive
+--
+ERR_MSG
+}
+
+@test "assert_output(): \`--' stops parsing options" {
+  run echo '-p'
+  run assert_output -- '-p'
+  assert_test_pass
+}