6 files changed, 13 insertions, 2 deletions
diff --git a/tests/system/helpers/readall_echo.nim b/tests/system/helpers/readall_echo.nim
index 79937bf6f..2891ef3ae 100644
--- a/tests/system/helpers/readall_echo.nim
+++ b/tests/system/helpers/readall_echo.nim
@@ -1,2 +1,2 @@
-when isMainModule:
+when true:
   echo(stdin.readAll)
diff --git a/tests/system/t7894.nim b/tests/system/t7894.nim
index 27ee3f220..b7ca1eec8 100644
--- a/tests/system/t7894.nim
+++ b/tests/system/t7894.nim
@@ -1,6 +1,7 @@
 discard """
 disabled: "travis"
 disabled: "appveyor"
+joinable: false
 """
 
 # CI integration servers are out of memory for this test
diff --git a/tests/system/talloc2.nim b/tests/system/talloc2.nim
index e40c3f93c..7e0dec9d3 100644
--- a/tests/system/talloc2.nim
+++ b/tests/system/talloc2.nim
@@ -1,5 +1,6 @@
 discard """
 disabled: "windows"
+joinable: false
 """
 
 # appveyor is "out of memory"
diff --git a/tests/system/tostring.nim b/tests/system/tostring.nim
index 04b37f133..ea4a44417 100644
--- a/tests/system/tostring.nim
+++ b/tests/system/tostring.nim
@@ -1,5 +1,5 @@
 discard """
-  output: ""
+  output: "DONE: tostring.nim"
 """
 
 doAssert "@[23, 45]" == $(@[23, 45])
@@ -115,3 +115,6 @@ block:
   var s: string
   s.addQuoted a2
   doAssert s == "\"fo\\\"o2\""
+
+
+echo "DONE: tostring.nim"
diff --git a/tests/system/tparams.nim b/tests/system/tparams.nim
index 015530043..dcd620b20 100644
--- a/tests/system/tparams.nim
+++ b/tests/system/tparams.nim
@@ -1,3 +1,8 @@
+discard """
+joinable: false
+"""
+
+# not joinable because it executes itself with parameters
 import os
 import osproc
 import parseopt2
diff --git a/tests/system/trealloc.nim b/tests/system/trealloc.nim
index dc5f712d6..7180b8eda 100644
--- a/tests/system/trealloc.nim
+++ b/tests/system/trealloc.nim
@@ -1,5 +1,6 @@
 discard """
   output: '''success'''
+  joinable: false
 """
 
 # bug #4818