From d5e9ebb3d06c3e3083fdc35e459a6a6226c237e1 Mon Sep 17 00:00:00 2001
From: Ulf Magnusson <ulfalizer@gmail.com>
Date: Sat, 15 Dec 2012 14:43:41 +0100
Subject: Add a long dependency chain selftest.

---
 tests/Kchain | 114 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 testsuite.py |   9 +++++
 2 files changed, 123 insertions(+)
 create mode 100644 tests/Kchain

diff --git a/tests/Kchain b/tests/Kchain
new file mode 100644
index 0000000..316bb04
--- /dev/null
+++ b/tests/Kchain
@@ -0,0 +1,114 @@
+#
+# Dependency chain.
+#
+# In the following, CHAIN_n depends on CHAIN_n-1 in different ways for n > 1.
+# We verify that the last element depends on CHAIN_1.
+#
+
+config CHAIN_1
+    bool
+
+config CHAIN_2
+    bool "chain 2"
+    depends on CHAIN_1
+
+config CHAIN_3
+    bool "chain 3" if CHAIN_2
+
+config CHAIN_4
+    def_bool CHAIN_3
+
+config CHAIN_5
+    def_bool y if CHAIN_4
+
+config CHAIN_6
+    def_tristate CHAIN_5
+
+config CHAIN_7
+    def_tristate y if CHAIN_6
+
+config CHAIN_8
+    bool
+    default CHAIN_7
+
+config CHAIN_9
+    bool
+    default y if CHAIN_8
+
+config CHAIN_10
+    bool
+    prompt "chain 10" if CHAIN_9
+
+config CHAIN_11
+    int
+    range 0 1 if CHAIN_10
+
+config CHAIN_12
+    int
+    range CHAIN_11 10
+
+config CHAIN_13
+    hex
+    range 0 CHAIN_12
+
+config CHAIN_14
+    bool "chain 14" if "0x2" = CHAIN_13
+    select CHAIN_15
+
+config CHAIN_15
+    bool "chain 15"
+
+config CHAIN_SELECT_RELAY
+    bool "chain select relay"
+    default y
+    select CHAIN_16 if CHAIN_15
+
+config CHAIN_16
+    bool "chain 16"
+
+if CHAIN_16 = 0
+config CHAIN_17
+    tristate "chain 17"
+endif
+
+menu "chain menu"
+    depends on CHAIN_17
+config CHAIN_18
+    bool "chain 18"
+endmenu
+
+menu "chain menu visible if"
+    visible if CHAIN_18
+config CHAIN_19
+    bool "chain 19"
+endmenu
+
+choice CHAIN_CHOICE_1
+    tristate "chain choice 1" if CHAIN_19
+config CHAIN_20
+    tristate "chain 20"
+config DUMMY_1
+    tristate "dummy 1"
+endchoice
+
+choice CHAIN_CHOICE_2
+    tristate "chain choice 2"
+    depends on CHAIN_20
+config DUMMY_2
+    tristate "dummy 2"
+config CHAIN_21
+    tristate "chain 18"
+endchoice
+
+choice CHAIN_CHOICE_3
+    tristate "chain choice 3"
+    default DUMMY_3 if CHAIN_21
+config CHAIN_22
+    tristate "chain 22"
+config DUMMY_3
+    tristate "dummy 3"
+endchoice
+
+config CHAIN_23
+    string "chain 19"
+    depends on CHAIN_22
diff --git a/testsuite.py b/testsuite.py
index 6ffdbd1..a8c0e0d 100644
--- a/testsuite.py
+++ b/testsuite.py
@@ -1339,6 +1339,15 @@ def run_selftests():
         verify_dependent("C", ["A", "B"])
         verify_dependent("S", ["A", "B", "C"])
 
+    # Verify that the last symbol depends on the first in a long chain of
+    # dependencies. Test twice to cover dependency caching.
+
+    c = kconfiglib.Config("Kconfiglib/tests/Kchain")
+
+    for i in range(0, 2):
+        verify(c["CHAIN_23"] in c["CHAIN_1"]._get_dependent(),
+               "Dependency chain broken")
+
     print
     if _all_ok:
         print "All selftests passed"
-- 
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