tests: Add variable expansion tests

There are some corner cases in variable expansion which would be nice to
capture before going and rewriting the variable expansion code. The
majority of these are related to configuring files and strings with '@'
in them in conjunction with @ONLY being specified. Another is testing
for '(' usage inside of ENV variable references based on whether it is
quoted or not.

25 files changed, 130 insertions, 0 deletions

diff --git a/Tests/RunCMake/Syntax/AtWithVariable-stderr.txt b/Tests/RunCMake/Syntax/AtWithVariable-stderr.txt
new file mode 100644
index 0000000..5dcd4d7
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariable-stderr.txt
@@ -0,0 +1 @@
+-->wrong<--
diff --git a/Tests/RunCMake/Syntax/AtWithVariable.cmake b/Tests/RunCMake/Syntax/AtWithVariable.cmake
new file mode 100644
index 0000000..2bbf61d
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariable.cmake
@@ -0,0 +1,9 @@
+set(right "wrong")
+set(var "\${right}")
+# Expanded here.
+set(ref "@var@")
+
+# 'right' is dereferenced because 'var' was dereferenced when
+# assigning to 'ref' above.
+string(CONFIGURE "${ref}" output)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/AtWithVariableAtOnly-stderr.txt b/Tests/RunCMake/Syntax/AtWithVariableAtOnly-stderr.txt
new file mode 100644
index 0000000..cbd1be4
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableAtOnly-stderr.txt
@@ -0,0 +1 @@
+-->\${right}<--
diff --git a/Tests/RunCMake/Syntax/AtWithVariableAtOnly.cmake b/Tests/RunCMake/Syntax/AtWithVariableAtOnly.cmake
new file mode 100644
index 0000000..e06484c
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableAtOnly.cmake
@@ -0,0 +1,8 @@
+set(right "wrong")
+set(var "\${right}")
+# Expanded here.
+set(ref "@var@")
+
+# No dereference done at all.
+string(CONFIGURE "${ref}" output @ONLY)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/AtWithVariableAtOnlyFile-stderr.txt b/Tests/RunCMake/Syntax/AtWithVariableAtOnlyFile-stderr.txt
new file mode 100644
index 0000000..90bffb6
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableAtOnlyFile-stderr.txt
@@ -0,0 +1,5 @@
+-->==>\${right}<==
+==><==
+==>\${var}<==
+==>\${empty}<==
+<--
diff --git a/Tests/RunCMake/Syntax/AtWithVariableAtOnlyFile.cmake b/Tests/RunCMake/Syntax/AtWithVariableAtOnlyFile.cmake
new file mode 100644
index 0000000..bdd7bcd
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableAtOnlyFile.cmake
@@ -0,0 +1,9 @@
+set(right "wrong")
+set(var "\${right}")
+
+configure_file(
+  "${CMAKE_CURRENT_SOURCE_DIR}/atfile.txt.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/atfile.txt"
+  @ONLY)
+file(READ "${CMAKE_CURRENT_BINARY_DIR}/atfile.txt" output)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansion-stderr.txt b/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansion-stderr.txt
new file mode 100644
index 0000000..cbd1be4
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansion-stderr.txt
@@ -0,0 +1 @@
+-->\${right}<--
diff --git a/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansion.cmake b/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansion.cmake
new file mode 100644
index 0000000..840c7f0
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansion.cmake
@@ -0,0 +1,8 @@
+# Literal since 'var' is not defined.
+set(ref "@var@")
+set(right "wrong")
+set(var "\${right}")
+
+# 'var' is dereferenced here.
+string(CONFIGURE "${ref}" output)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansionAtOnly-stderr.txt b/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansionAtOnly-stderr.txt
new file mode 100644
index 0000000..cbd1be4
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansionAtOnly-stderr.txt
@@ -0,0 +1 @@
+-->\${right}<--
diff --git a/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansionAtOnly.cmake b/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansionAtOnly.cmake
new file mode 100644
index 0000000..b657506
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableEmptyExpansionAtOnly.cmake
@@ -0,0 +1,8 @@
+# Literal since 'var' is not defined.
+set(ref "@var@")
+set(right "wrong")
+set(var "\${right}")
+
+# 'var' is dereferenced, but now 'right'
+string(CONFIGURE "${ref}" output @ONLY)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/AtWithVariableFile-stderr.txt b/Tests/RunCMake/Syntax/AtWithVariableFile-stderr.txt
new file mode 100644
index 0000000..43f029f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableFile-stderr.txt
@@ -0,0 +1,5 @@
+-->==>\${right}<==
+==><==
+==>\${right}<==
+==><==
+<--
diff --git a/Tests/RunCMake/Syntax/AtWithVariableFile.cmake b/Tests/RunCMake/Syntax/AtWithVariableFile.cmake
new file mode 100644
index 0000000..c709099
--- /dev/null
+++ b/Tests/RunCMake/Syntax/AtWithVariableFile.cmake
@@ -0,0 +1,8 @@
+set(right "wrong")
+set(var "\${right}")
+
+configure_file(
+  "${CMAKE_CURRENT_SOURCE_DIR}/atfile.txt.in"
+  "${CMAKE_CURRENT_BINARY_DIR}/atfile.txt")
+file(READ "${CMAKE_CURRENT_BINARY_DIR}/atfile.txt" output)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/EscapeQuotes-stderr.txt b/Tests/RunCMake/Syntax/EscapeQuotes-stderr.txt
new file mode 100644
index 0000000..077272d
--- /dev/null
+++ b/Tests/RunCMake/Syntax/EscapeQuotes-stderr.txt
@@ -0,0 +1 @@
+-->"<--
diff --git a/Tests/RunCMake/Syntax/EscapeQuotes.cmake b/Tests/RunCMake/Syntax/EscapeQuotes.cmake
new file mode 100644
index 0000000..46d2b6f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/EscapeQuotes.cmake
@@ -0,0 +1,9 @@
+set(var "\"")
+set(ref "@var@")
+set(rref "\${var}")
+
+string(CONFIGURE "${ref}" output ESCAPE_QUOTES)
+message("-->${output}<--")
+
+string(CONFIGURE "${rref}" output ESCAPE_QUOTES)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/EscapedAt-stderr.txt b/Tests/RunCMake/Syntax/EscapedAt-stderr.txt
new file mode 100644
index 0000000..a51c0d3
--- /dev/null
+++ b/Tests/RunCMake/Syntax/EscapedAt-stderr.txt
@@ -0,0 +1 @@
+-->\\n<--
diff --git a/Tests/RunCMake/Syntax/EscapedAt.cmake b/Tests/RunCMake/Syntax/EscapedAt.cmake
new file mode 100644
index 0000000..1ced620
--- /dev/null
+++ b/Tests/RunCMake/Syntax/EscapedAt.cmake
@@ -0,0 +1,5 @@
+set(var "n")
+set(ref "\\@var@")
+
+string(CONFIGURE "${ref}" output)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/ExpandInAt-stderr.txt b/Tests/RunCMake/Syntax/ExpandInAt-stderr.txt
new file mode 100644
index 0000000..5da8b60
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ExpandInAt-stderr.txt
@@ -0,0 +1 @@
+-->@foo@<--
diff --git a/Tests/RunCMake/Syntax/ExpandInAt.cmake b/Tests/RunCMake/Syntax/ExpandInAt.cmake
new file mode 100644
index 0000000..98f0277
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ExpandInAt.cmake
@@ -0,0 +1,6 @@
+set("\${varname}" bar)
+set(var foo)
+set(ref "@\${var}@")
+
+string(CONFIGURE "${ref}" output)
+message("-->${output}<--")
diff --git a/Tests/RunCMake/Syntax/ParenInENV-result.txt b/Tests/RunCMake/Syntax/ParenInENV-result.txt
new file mode 100644
index 0000000..d00491f
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenInENV-result.txt
@@ -0,0 +1 @@
+1
diff --git a/Tests/RunCMake/Syntax/ParenInENV-stderr.txt b/Tests/RunCMake/Syntax/ParenInENV-stderr.txt
new file mode 100644
index 0000000..7ecfe11
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenInENV-stderr.txt
@@ -0,0 +1,20 @@
+CMake Warning \(dev\) at CMakeLists.txt:3 \(include\):
+  Syntax Warning in cmake code at
+
+    .*/Tests/RunCMake/Syntax/ParenInENV.cmake:2:21
+
+  Argument not separated from preceding token by whitespace.
+This warning is for project developers.  Use -Wno-dev to suppress it.
+
+CMake Error at ParenInENV.cmake:2 \(message\):
+  Syntax error in cmake code at
+
+    .*/Tests/RunCMake/Syntax/ParenInENV.cmake:2
+
+  when parsing string
+
+    -->\$ENV{e
+
+  syntax error, unexpected \$end, expecting } \(9\)
+Call Stack \(most recent call first\):
+  CMakeLists.txt:3 \(include\)
diff --git a/Tests/RunCMake/Syntax/ParenInENV.cmake b/Tests/RunCMake/Syntax/ParenInENV.cmake
new file mode 100644
index 0000000..148f726
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenInENV.cmake
@@ -0,0 +1,2 @@
+set("ENV{e(x)}" value)
+message(-->$ENV{e(x)}<--)
diff --git a/Tests/RunCMake/Syntax/ParenInQuotedENV-stderr.txt b/Tests/RunCMake/Syntax/ParenInQuotedENV-stderr.txt
new file mode 100644
index 0000000..7020c7e
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenInQuotedENV-stderr.txt
@@ -0,0 +1 @@
+-->value<--
diff --git a/Tests/RunCMake/Syntax/ParenInQuotedENV.cmake b/Tests/RunCMake/Syntax/ParenInQuotedENV.cmake
new file mode 100644
index 0000000..6333717
--- /dev/null
+++ b/Tests/RunCMake/Syntax/ParenInQuotedENV.cmake
@@ -0,0 +1,2 @@
+set("ENV{e(x)}" value)
+message("-->$ENV{e(x)}<--")
diff --git a/Tests/RunCMake/Syntax/RunCMakeTest.cmake b/Tests/RunCMake/Syntax/RunCMakeTest.cmake
index 5f05cfc..dcabd8a 100644
--- a/Tests/RunCMake/Syntax/RunCMakeTest.cmake
+++ b/Tests/RunCMake/Syntax/RunCMakeTest.cmake
@@ -52,3 +52,16 @@ run_cmake(UnterminatedString)
 run_cmake(UnterminatedBracket0)
 run_cmake(UnterminatedBracket1)
 run_cmake(UnterminatedBracketComment)
+
+# Variable expansion tests
+run_cmake(ExpandInAt)
+run_cmake(EscapedAt)
+run_cmake(EscapeQuotes)
+run_cmake(AtWithVariable)
+run_cmake(AtWithVariableEmptyExpansion)
+run_cmake(AtWithVariableAtOnly)
+run_cmake(AtWithVariableEmptyExpansionAtOnly)
+run_cmake(AtWithVariableFile)
+run_cmake(AtWithVariableAtOnlyFile)
+run_cmake(ParenInENV)
+run_cmake(ParenInQuotedENV)
diff --git a/Tests/RunCMake/Syntax/atfile.txt.in b/Tests/RunCMake/Syntax/atfile.txt.in
new file mode 100644
index 0000000..3775919
--- /dev/null
+++ b/Tests/RunCMake/Syntax/atfile.txt.in
@@ -0,0 +1,4 @@
+==>@var@<==
+==>@empty@<==
+==>${var}<==
+==>${empty}<==