5 files changed, 67 insertions, 0 deletions
diff --git a/Tests/RunCMake/string/Append.cmake b/Tests/RunCMake/string/Append.cmake
new file mode 100644
index 0000000..2634274
--- /dev/null
+++ b/Tests/RunCMake/string/Append.cmake
@@ -0,0 +1,58 @@
+set(out)
+string(APPEND out)
+if(DEFINED out)
+  message(FATAL_ERROR "\"string(APPEND out)\" set out to \"${out}\"")
+endif()
+
+set(out "")
+string(APPEND out)
+if(NOT out STREQUAL "")
+  message(FATAL_ERROR "\"string(APPEND out)\" set out to \"${out}\"")
+endif()
+
+set(out x)
+string(APPEND out)
+if(NOT out STREQUAL "x")
+  message(FATAL_ERROR "\"string(APPEND out)\" set out to \"${out}\"")
+endif()
+
+
+set(out)
+string(APPEND out a)
+if(NOT out STREQUAL "a")
+  message(FATAL_ERROR "\"string(APPEND out a)\" set out to \"${out}\"")
+endif()
+
+set(out "")
+string(APPEND out a)
+if(NOT out STREQUAL "a")
+  message(FATAL_ERROR "\"string(APPEND out a)\" set out to \"${out}\"")
+endif()
+
+set(out x)
+string(APPEND out a)
+if(NOT out STREQUAL "xa")
+  message(FATAL_ERROR "\"string(APPEND out a)\" set out to \"${out}\"")
+endif()
+
+
+set(out x)
+string(APPEND out a "b")
+if(NOT out STREQUAL "xab")
+  message(FATAL_ERROR "\"string(APPEND out a \"b\")\" set out to \"${out}\"")
+endif()
+
+set(b)
+set(out x)
+string(APPEND out ${b})
+if(NOT out STREQUAL "x")
+  message(FATAL_ERROR "\"string(APPEND out \${b})\" set out to \"${out}\"")
+endif()
+
+set(b b)
+set(out x)
+string(APPEND out a "${b}" [[
+${c}]])
+if(NOT out STREQUAL "xab\${c}")
+  message(FATAL_ERROR "\"string(APPEND out a \"\${b}\" [[\${c}]])\" set out to \"${out}\"")
+endif()
diff --git a/Tests/RunCMake/string/AppendNoArgs-result.txt b/Tests/RunCMake/string/AppendNoArgs-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/string/AppendNoArgs-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/string/AppendNoArgs-stderr.txt b/Tests/RunCMake/string/AppendNoArgs-stderr.txt
new file mode 100644
index 0000000..75ad427
--- /dev/null
+++ b/Tests/RunCMake/string/AppendNoArgs-stderr.txt
@@ -0,0 +1,4 @@
+CMake Error at AppendNoArgs.cmake:1 \(string\):
+  string sub-command APPEND requires at least one argument.
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/string/AppendNoArgs.cmake b/Tests/RunCMake/string/AppendNoArgs.cmake
new file mode 100644
index 0000000..f54fb77
--- /dev/null
+++ b/Tests/RunCMake/string/AppendNoArgs.cmake
@@ -0,0 +1 @@
+string(APPEND)
diff --git a/Tests/RunCMake/string/RunCMakeTest.cmake b/Tests/RunCMake/string/RunCMakeTest.cmake
index 89f7ea5..8067d9d 100644
--- a/Tests/RunCMake/string/RunCMakeTest.cmake
+++ b/Tests/RunCMake/string/RunCMakeTest.cmake
@@ -1,5 +1,8 @@
 include(RunCMake)
 
+run_cmake(Append)
+run_cmake(AppendNoArgs)
+
 run_cmake(Concat)
 run_cmake(ConcatNoArgs)