GENERATED prop: Add implementation for policy CMP0118 being set to NEW

* Adding implementation for policy CMP0118 being set to `NEW`.
* Adding new tests for policy CMP0118 being set to `NEW`.
* Checking the `GENERATED` property with `get_source_file_property` or
  `get_property` now always returns exactly `1` or `0`. No other values
  will be returned. Note, that this is a backwards-incompatible change,
  even when policy CMP0118 is unset or set to `OLD`.
* Additionally, as `get_source_file_property` and `get_property` now
  always check if a source-file was marked globally visible, even when
  CMP0118 is unset or set to `OLD`, they possibly return `1` where they
  might have returned `0` before the changes introduced by this commit.
  Note, that this is a backwards-incompatible change, even when policy
  CMP0118 is unset or set to `OLD`.
* As a consequence, the tests for policy CMP0118 being unset or set to
  `OLD` got slightly adjusted, too, to reflect these changes in
  behavior.

1 files changed, 51 insertions, 0 deletions

diff --git a/Tests/RunCMake/CMP0118/CMP0118-NEW-Test8-stderr.txt b/Tests/RunCMake/CMP0118/CMP0118-NEW-Test8-stderr.txt
new file mode 100644
index 0000000..44f94d4
--- /dev/null
+++ b/Tests/RunCMake/CMP0118/CMP0118-NEW-Test8-stderr.txt
@@ -0,0 +1,51 @@
+^Generated_source1\.cpp: # 1a # GENERATED = `0`
+Generated_source1\.cpp: # 1b # GENERATED = `0`
+Generated_source1\.cpp: # 2a # GENERATED = `0`
+Generated_source1\.cpp: # 2b # GENERATED = `0`
+Generated_source1\.cpp: # 3a # GENERATED = `0`
+Generated_source1\.cpp: # 3b # GENERATED = `0`
+Generated_source2\.cpp: # 1a # GENERATED = `1`
+Generated_source2\.cpp: # 1b # GENERATED = `1`
+Generated_source2\.cpp: # 2a # GENERATED = `1`
+Generated_source2\.cpp: # 2b # GENERATED = `1`
+Generated_source2\.cpp: # 3a # GENERATED = `0`
+Generated_source2\.cpp: # 3b # GENERATED = `0`
+Generated_source3\.cpp: # 1a # GENERATED = `1`
+Generated_source3\.cpp: # 1b # GENERATED = `1`
+Generated_source3\.cpp: # 2a # GENERATED = `1`
+Generated_source3\.cpp: # 2b # GENERATED = `1`
+Generated_source3\.cpp: # 3a # GENERATED = `0`
+Generated_source3\.cpp: # 3b # GENERATED = `0`
+Generated_source4\.cpp: # 1a # GENERATED = `0`
+Generated_source4\.cpp: # 1b # GENERATED = `0`
+Generated_source4\.cpp: # 2a # GENERATED = `0`
+Generated_source4\.cpp: # 2b # GENERATED = `0`
+Generated_source4\.cpp: # 3a # GENERATED = `0`
+Generated_source4\.cpp: # 3b # GENERATED = `0`
+Generated_source5\.cpp: # 1a # GENERATED = `1`
+Generated_source5\.cpp: # 1b # GENERATED = `1`
+Generated_source5\.cpp: # 2a # GENERATED = `1`
+Generated_source5\.cpp: # 2b # GENERATED = `1`
+Generated_source5\.cpp: # 3a # GENERATED = `0`
+Generated_source5\.cpp: # 3b # GENERATED = `0`
+Generated_source6\.cpp: # 1a # GENERATED = `1`
+Generated_source6\.cpp: # 1b # GENERATED = `1`
+Generated_source6\.cpp: # 2a # GENERATED = `1`
+Generated_source6\.cpp: # 2b # GENERATED = `1`
+Generated_source6\.cpp: # 3a # GENERATED = `0`
+Generated_source6\.cpp: # 3b # GENERATED = `0`
+CMake Error at CMP0118-Common-Test8\.cmake:[0-9]+ \(add_executable\):
+  Cannot find source file:
+
+[ \t]*.*Tests/RunCMake/CMP0118/CMP0118-NEW-Test8-build/Generated_source4\.cpp
+Call Stack \(most recent call first\):
+  CMP0118-NEW-Test8\.cmake:[0-9]+ \(include\)
+  CMakeLists\.txt:[0-9]+ \(include\)
++
+CMake Error at CMP0118-Common-Test8\.cmake:[0-9]+ \(add_executable\):
+  No SOURCES given to target: executable4
+Call Stack \(most recent call first\):
+  CMP0118-NEW-Test8\.cmake:[0-9]+ \(include\)
+  CMakeLists\.txt:[0-9]+ \(include\)
++
+CMake Generate step failed\.  Build files cannot be regenerated correctly\.$