5 files changed, 37 insertions, 4 deletions
diff --git a/tests/test/script/builtin/sed.testscript b/tests/test/script/builtin/sed.testscript
index 1665de2..e3c0965 100644
--- a/tests/test/script/builtin/sed.testscript
+++ b/tests/test/script/builtin/sed.testscript
@@ -109,7 +109,7 @@
   $c <"sed -e 's/a//' a b" && $b 2>>/EOE != 0
   testscript:1:1: error: sed exit code 1 != 0
     info: stderr: test/1/stderr
-  sed: unexpected argument
+  sed: unexpected argument 'b'
     info: test id: 1
   EOE
 }
diff --git a/tests/test/script/builtin/sleep.testscript b/tests/test/script/builtin/sleep.testscript
new file mode 100644
index 0000000..c43418d
--- /dev/null
+++ b/tests/test/script/builtin/sleep.testscript
@@ -0,0 +1,31 @@
+# file      : tests/test/script/builtin/sleep.testscript
+# copyright : Copyright (c) 2014-2019 Code Synthesis Ltd
+# license   : MIT; see accompanying LICENSE file
+
+.include ../common.testscript
+
+: success
+:
+$c <'sleep 1' && $b
+
+: no-time
+:
+: Test passing no time interval.
+:
+$c <'sleep 2>"sleep: missing time interval" != 0' && $b
+
+: invalid-time
+:
+: Test passing invalid time interval.
+:
+$c <<EOI && $b
+sleep 1a 2>"sleep: invalid time interval '1a'" != 0
+EOI
+
+: unexpected-arg
+:
+: Test passing extra argument.
+:
+$c <<EOI && $b
+sleep 1 1 2>"sleep: unexpected argument '1'" != 0
+EOI
diff --git a/tests/test/script/builtin/test.testscript b/tests/test/script/builtin/test.testscript
index c17b3b0..650f9ef 100644
--- a/tests/test/script/builtin/test.testscript
+++ b/tests/test/script/builtin/test.testscript
@@ -58,7 +58,9 @@ $c <'test -c a 2>"test: invalid option" == 2' && $b
 :
 : Test passing extra argument.
 :
-$c <'test -f a b 2>"test: unexpected argument" == 2' && $b
+$c <<EOI && $b
+test -f a b 2>"test: unexpected argument 'b'" == 2
+EOI
 
 : empty-path
 :
diff --git a/tests/test/script/runner/exit.testscript b/tests/test/script/runner/exit.testscript
index 897cf65..261b02d 100644
--- a/tests/test/script/runner/exit.testscript
+++ b/tests/test/script/runner/exit.testscript
@@ -77,7 +77,7 @@ empty_id = ''
   : unexpected
   :
   $c <'exit "foo" "bar"' && $b 2>>EOE != 0
-  testscript:1:1: error: unexpected argument
+  testscript:1:1: error: unexpected argument 'bar'
     info: test id: 1
   EOE
 }
diff --git a/tests/test/script/runner/set.testscript b/tests/test/script/runner/set.testscript
index a795963..28d6686 100644
--- a/tests/test/script/runner/set.testscript
+++ b/tests/test/script/runner/set.testscript
@@ -53,7 +53,7 @@
   : unexpected
   :
   $c <'set foo bar baz' && $b 2>>EOE != 0
-  testscript:1:1: error: unexpected argument
+  testscript:1:1: error: unexpected argument 'baz'
     info: test id: 1
   EOE