cmake_host_system_information: query windows registry

Fixes: #21240, #23367

27 files changed, 312 insertions, 0 deletions

diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1-result.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1-stderr.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1-stderr.txt
new file mode 100644
index 0000000..1832ada
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at Registry_BadKey1.cmake:[0-9]+ \(message\):
+  WRONG_ROOT: invalid root key.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1.cmake
new file mode 100644
index 0000000..6299f85
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey1.cmake
@@ -0,0 +1,4 @@
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY WRONG_ROOT/SUBKEY ERROR_VARIABLE error)
+if (NOT error STREQUAL "")
+  message(FATAL_ERROR "${error}")
+endif()
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2-result.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2-stderr.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2-stderr.txt
new file mode 100644
index 0000000..4be55bf
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at Registry_BadKey2.cmake:[0-9]+ \(message\):
+  HKLM-SUBKEY: invalid root key.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2.cmake
new file mode 100644
index 0000000..1750078
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadKey2.cmake
@@ -0,0 +1,4 @@
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY HKLM-SUBKEY ERROR_VARIABLE error)
+if (NOT error STREQUAL "")
+  message(FATAL_ERROR "${error}")
+endif()
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1-result.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1-stderr.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1-stderr.txt
new file mode 100644
index 0000000..9510327
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at Registry_BadQuery1.cmake:[0-9]+ \(cmake_host_system_information\):
+  cmake_host_system_information given invalid argument\(s\) "BAD_OPTION".
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1.cmake
new file mode 100644
index 0000000..a92f35c
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery1.cmake
@@ -0,0 +1 @@
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY HKLM/SOFTWARE BAD_OPTION)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2-result.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2-stderr.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2-stderr.txt
new file mode 100644
index 0000000..6a430f1
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2-stderr.txt
@@ -0,0 +1,5 @@
+CMake Error at Registry_BadQuery2.cmake:[0-9]+ \(cmake_host_system_information\):
+  cmake_host_system_information missing expected value for argument\(s\)
+  "VALUE".
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2.cmake
new file mode 100644
index 0000000..7c751cc
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadQuery2.cmake
@@ -0,0 +1 @@
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY HKLM/SOFTWARE VALUE)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView1-result.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadView1-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView1-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView1-stderr.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadView1-stderr.txt
new file mode 100644
index 0000000..5eda4ff
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView1-stderr.txt
@@ -0,0 +1,5 @@
+CMake Error at Registry_BadView1.cmake:[0-9]+ \(cmake_host_system_information\):
+  cmake_host_system_information missing expected value for argument\(s\)
+  "VIEW".
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView1.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_BadView1.cmake
new file mode 100644
index 0000000..6527784
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView1.cmake
@@ -0,0 +1 @@
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY HKLM/SOFTWARE VIEW)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView2-result.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadView2-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView2-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView2-stderr.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadView2-stderr.txt
new file mode 100644
index 0000000..201d93a
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView2-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at Registry_BadView2.cmake:[0-9]+ \(cmake_host_system_information\):
+  cmake_host_system_information given invalid value for "VIEW": BAD_VIEW.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView2.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_BadView2.cmake
new file mode 100644
index 0000000..d116c76
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView2.cmake
@@ -0,0 +1 @@
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY HKLM/SOFTWARE VIEW BAD_VIEW)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView3-result.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadView3-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView3-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView3-stderr.txt b/Tests/RunCMake/cmake_host_system_information/Registry_BadView3-stderr.txt
new file mode 100644
index 0000000..5b7f7c7
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView3-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at Registry_BadView3.cmake:[0-9]+ \(cmake_host_system_information\):
+  cmake_host_system_information given invalid argument\(s\) "64".
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_BadView3.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_BadView3.cmake
new file mode 100644
index 0000000..7c5f272
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_BadView3.cmake
@@ -0,0 +1 @@
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY HKLM/SOFTWARE VIEW 32 64)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs-result.txt b/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs-stderr.txt b/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs-stderr.txt
new file mode 100644
index 0000000..ff55fcb
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at Registry_NoArgs.cmake:[0-9]+ \(cmake_host_system_information\):
+  cmake_host_system_information missing <key> specification.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:[0-9]+ \(include\)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs.cmake
new file mode 100644
index 0000000..87e253d
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_NoArgs.cmake
@@ -0,0 +1 @@
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY)
diff --git a/Tests/RunCMake/cmake_host_system_information/Registry_Query.cmake b/Tests/RunCMake/cmake_host_system_information/Registry_Query.cmake
new file mode 100644
index 0000000..9f9fb14
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/Registry_Query.cmake
@@ -0,0 +1,232 @@
+
+# check Windows architecture
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "HKCU" SUBKEYS VIEW 64 ERROR_VARIABLE status)
+if (status STREQUAL "")
+  set(HOST_64BIT TRUE)
+else()
+  set(HOST_64BIT FALSE)
+endif()
+
+# helper function for test validation
+function(CHECK key result status expression)
+  if(status STREQUAL "")
+  cmake_language(EVAL CODE
+    "if (NOT (${expression}))
+       message(SEND_ERROR \"wrong value for key '${key}': '${result}'\")
+     endif()")
+  else()
+    message(SEND_ERROR "query failed for key '${key}': '${status}'")
+  endif()
+endfunction()
+
+
+# HKCU/Software/Classes/CLSID/CMake-Tests/chsi-registry: Query default value
+set(KEY "HKCU/Software/Classes/CLSID/CMake-Tests/chsi-registry")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}"
+      "(HOST_64BIT AND result STREQUAL \"default 64bit\")
+      OR (NOT HOST_64BIT AND result STREQUAL \"default 32bit\")")
+# query value using special name should be identical to default value
+cmake_host_system_information(RESULT result2 QUERY WINDOWS_REGISTRY "${KEY}" VALUE "(default)" ERROR_VARIABLE status)
+check("${KEY}{(default)}" "${result2}" "${status}" "result2 STREQUAL result")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VIEW HOST ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}"
+      "(HOST_64BIT AND result STREQUAL \"default 64bit\")
+      OR (NOT HOST_64BIT AND result STREQUAL \"default 32bit\")")
+# VIEW TARGET should have same value as VIEW HOST
+cmake_host_system_information(RESULT result2 QUERY WINDOWS_REGISTRY "${KEY}" VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result2}" "${status}" "result2 STREQUAL result")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VIEW 64 ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"default 64bit\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VIEW 32 ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"default 32bit\"")
+
+# reg 64bit is read first
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VIEW 64_32 ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"default 64bit\"")
+
+# reg 32bit is read first
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VIEW 32_64 ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"default 32bit\"")
+
+
+# HKCU/Software/CMake-Tests/chsi-registry: Query named value
+set(KEY "HKCU/Software/Classes/CLSID/CMake-Tests/chsi-registry")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              ERROR_VARIABLE status)
+check("${KEY}{BYTE_SIZE}" "${result}" "${status}"
+      "(HOST_64BIT AND result STREQUAL \"64bit\")
+      OR (NOT HOST_64BIT AND result STREQUAL \"32bit\")")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              VIEW HOST ERROR_VARIABLE status)
+check("${KEY}{BYTE_SIZE}" "${result}" "${status}"
+      "(HOST_64BIT AND result STREQUAL \"64bit\")
+      OR (NOT HOST_64BIT AND result STREQUAL \"32bit\")")
+# VIEW TARGET should have same value as VIEW HOST
+cmake_host_system_information(RESULT result2 QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}{BYTE_SIZE}" "${result2}" "${status}" "result2 STREQUAL result")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              VIEW 64 ERROR_VARIABLE status)
+check("${KEY}{BYTE_SIZE}" "${result}" "${status}" "result STREQUAL \"64bit\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              VIEW 32 ERROR_VARIABLE status)
+check("${KEY}{BYTE_SIZE}" "${result}" "${status}" "result STREQUAL \"32bit\"")
+
+# reg 64bit is read first
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              VIEW 64_32 ERROR_VARIABLE status)
+check("${KEY}{BYTE_SIZE}" "${result}" "${status}" "result STREQUAL \"64bit\"")
+
+# reg 32bit is read first
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              VIEW 32_64 ERROR_VARIABLE status)
+check("${KEY}{BYTE_SIZE}" "${result}" "${status}" "result STREQUAL \"32bit\"")
+
+
+# HKCU/Software/CMake-Tests/chsi-registry: check retrieval of various types
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE VALUE_SZ ERROR_VARIABLE status)
+check("${KEY}{VALUE_SZ}" "${result}" "${status}" "result STREQUAL \"data with space\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE VALUE_EXPAND_SZ ERROR_VARIABLE status)
+check("${KEY}{VALUE_EXPAND_SZ}" "${result}" "${status}"
+      "(NOT result STREQUAL \"PATH=%PATH%\") AND (result MATCHES \"^PATH=\")")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE VALUE_MULTI_SZ ERROR_VARIABLE status)
+check("${KEY}{VALUE_MULTI_SZ}" "${result}" "${status}" "result STREQUAL \"data1;data2\"")
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE VALUE2_MULTI_SZ
+                              SEPARATOR "|" ERROR_VARIABLE status)
+check("${KEY}{VALUE2_MULTI_SZ}" "${result}" "${status}" "result STREQUAL \"data1;data2\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE VALUE_DWORD ERROR_VARIABLE status)
+check("${KEY}{VALUE_DWORD}" "${result}" "${status}" "result EQUAL \"129\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE VALUE_QWORD ERROR_VARIABLE status)
+check("${KEY}{VALUE_QWORD}" "${result}" "${status}" "result EQUAL \"513\"")
+
+
+# HKCU/Software/CMake-Tests/chsi-registry: check retrieval of value names
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              ERROR_VARIABLE status)
+check("${KEY}[VALUE_NAMES]" "${result}" "${status}" "result STREQUAL \"(default);BYTE_SIZE;VALUE2_MULTI_SZ;VALUE2_SZ;VALUE_DWORD;VALUE_EXPAND_SZ;VALUE_MULTI_SZ;VALUE_QWORD;VALUE_SZ\"")
+# VIEW BOTH should have same result as default view
+cmake_host_system_information(RESULT result2 QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW BOTH ERROR_VARIABLE status)
+check("${KEY}[VALUE_NAMES]" "${result2}" "${status}" "result STREQUAL \"(default);BYTE_SIZE;VALUE2_MULTI_SZ;VALUE2_SZ;VALUE_DWORD;VALUE_EXPAND_SZ;VALUE_MULTI_SZ;VALUE_QWORD;VALUE_SZ\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW HOST ERROR_VARIABLE status)
+check("${KEY}[VALUE_NAMES]" "${result}" "${status}"
+      "(HOST_64BIT AND result STREQUAL \"(default);BYTE_SIZE;VALUE2_MULTI_SZ;VALUE_DWORD;VALUE_EXPAND_SZ;VALUE_MULTI_SZ;VALUE_QWORD;VALUE_SZ\")
+       OR (NOT HOST_64BIT AND result STREQUAL \"(default);BYTE_SIZE;VALUE2_SZ\")")
+# VIEW TARGET should have same result as VIEW HOST
+cmake_host_system_information(RESULT result2 QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}[VALUE_NAMES]" "${result2}" "${status}"
+      "(HOST_64BIT AND result STREQUAL \"(default);BYTE_SIZE;VALUE2_MULTI_SZ;VALUE_DWORD;VALUE_EXPAND_SZ;VALUE_MULTI_SZ;VALUE_QWORD;VALUE_SZ\")
+       OR (NOT HOST_64BIT AND result STREQUAL \"(default);BYTE_SIZE;VALUE2_SZ\")")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW 64 ERROR_VARIABLE status)
+check("${KEY}[VALUE_NAMES]" "${result}" "${status}"
+      "result STREQUAL \"(default);BYTE_SIZE;VALUE2_MULTI_SZ;VALUE_DWORD;VALUE_EXPAND_SZ;VALUE_MULTI_SZ;VALUE_QWORD;VALUE_SZ\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW 32 ERROR_VARIABLE status)
+check("${KEY}[VALUE_NAMES]" "${result}" "${status}" "result STREQUAL \"(default);BYTE_SIZE;VALUE2_SZ\"")
+
+# reg 64bit is read first
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW 64_32 ERROR_VARIABLE status)
+check("${KEY}[VALUE_NAMES]" "${result}" "${status}"
+      "result STREQUAL \"(default);BYTE_SIZE;VALUE2_MULTI_SZ;VALUE2_SZ;VALUE_DWORD;VALUE_EXPAND_SZ;VALUE_MULTI_SZ;VALUE_QWORD;VALUE_SZ\"")
+
+# reg 32bit is read first. Result is the same as with view 64_32
+cmake_host_system_information(RESULT result2 QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW 32_64 ERROR_VARIABLE status)
+check("${KEY}[VALUE_NAMES]" "${result2}" "${status}" "result2 STREQUAL result")
+
+
+# HKCU/Software/CMake-Tests/chsi-registry: check retrieval of sub keys
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              ERROR_VARIABLE status)
+check("${KEY}[SUBKEYS]" "${result}" "${status}" "result STREQUAL \"subkey1;subkey2;subkey3\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              VIEW HOST ERROR_VARIABLE status)
+check("${KEY}[SUBKEYS]" "${result}" "${status}"
+      "(HOST_64BIT AND result STREQUAL \"subkey1;subkey2\")
+       OR (NOT HOST_64BIT AND result STREQUAL \"subkey1;subkey3\")")
+# VIEW TARGET should have same result as VIEW HOST
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}[SUBKEYS]" "${result}" "${status}"
+      "(HOST_64BIT AND result STREQUAL \"subkey1;subkey2\")
+       OR (NOT HOST_64BIT AND result STREQUAL \"subkey1;subkey3\")")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              VIEW 64 ERROR_VARIABLE status)
+check("${KEY}[SUBKEYS]" "${result}" "${status}"
+      "result STREQUAL \"subkey1;subkey2\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              VIEW 32 ERROR_VARIABLE status)
+check("${KEY}[SUBKEYS]" "${result}" "${status}"
+      "result STREQUAL \"subkey1;subkey3\"")
+
+# reg 64bit is read first
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              VIEW 64_32 ERROR_VARIABLE status)
+check("${KEY}[SUBLEYS]" "${result}" "${status}" "result STREQUAL \"subkey1;subkey2;subkey3\"")
+
+# reg 32bit is read first. Result is the same as with view 64_32
+cmake_host_system_information(RESULT result2 QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              VIEW 32_64 ERROR_VARIABLE status)
+check("${KEY}[SUBKEYS]" "${result2}" "${status}" "result2 STREQUAL result")
+
+
+# Check influence of variable CMAKE_SIZEOF_VOID_P
+set(CMAKE_SIZEOF_VOID_P 8)
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}"
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"default 64bit\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"64bit\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"(default);BYTE_SIZE;VALUE2_MULTI_SZ;VALUE_DWORD;VALUE_EXPAND_SZ;VALUE_MULTI_SZ;VALUE_QWORD;VALUE_SZ\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"subkey1;subkey2\"")
+
+
+set(CMAKE_SIZEOF_VOID_P 4)
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}"
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"default 32bit\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE BYTE_SIZE
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"32bit\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" VALUE_NAMES
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"(default);BYTE_SIZE;VALUE2_SZ\"")
+
+cmake_host_system_information(RESULT result QUERY WINDOWS_REGISTRY "${KEY}" SUBKEYS
+                              VIEW TARGET ERROR_VARIABLE status)
+check("${KEY}" "${result}" "${status}" "result STREQUAL \"subkey1;subkey3\"")
diff --git a/Tests/RunCMake/cmake_host_system_information/RunCMakeTest.cmake b/Tests/RunCMake/cmake_host_system_information/RunCMakeTest.cmake
index 87b6944..d857bee 100644
--- a/Tests/RunCMake/cmake_host_system_information/RunCMakeTest.cmake
+++ b/Tests/RunCMake/cmake_host_system_information/RunCMakeTest.cmake
@@ -21,3 +21,27 @@ if(RunCMake_GENERATOR MATCHES "^Visual Studio " AND NOT RunCMake_GENERATOR STREQ
 else()
   run_cmake(VsMSBuildMissing)
 endif()
+
+# WINDOWS_REGISTRY tests
+run_cmake(Registry_NoArgs)
+run_cmake(Registry_BadQuery1)
+run_cmake(Registry_BadQuery2)
+run_cmake(Registry_BadView1)
+run_cmake(Registry_BadView2)
+run_cmake(Registry_BadView3)
+if(CMAKE_HOST_SYSTEM_NAME STREQUAL "Windows")
+  run_cmake(Registry_BadKey1)
+  run_cmake(Registry_BadKey2)
+
+  # Tests using the Windows registry
+  find_program(REG NAMES "reg.exe" NO_CACHE)
+  if (REG)
+    # crete some entries in the registry
+    cmake_path(CONVERT "${RunCMake_SOURCE_DIR}/registry_data.reg" TO_NATIVE_PATH_LIST registry_data)
+    execute_process(COMMAND "${REG}" import "${registry_data}" OUTPUT_QUIET ERROR_QUIET)
+    run_cmake(Registry_Query)
+    # clean-up registry
+    execute_process(COMMAND "${REG}" delete "HKCU\\SOFTWARE\\Classes\\CLSID\\CMake-Tests" /f OUTPUT_QUIET ERROR_QUIET)
+    execute_process(COMMAND "${REG}" delete "HKCU\\SOFTWARE\\Classes\\WOW6432Node\\CLSID\\CMake-Tests" /f OUTPUT_QUIET ERROR_QUIET)
+  endif()
+endif()
diff --git a/Tests/RunCMake/cmake_host_system_information/registry_data.reg b/Tests/RunCMake/cmake_host_system_information/registry_data.reg
new file mode 100644
index 0000000..8596648
--- /dev/null
+++ b/Tests/RunCMake/cmake_host_system_information/registry_data.reg