tests/BuildSystem/Build/allow-modified-outputs.llbuild

# Check handling of `allow-modified-outputs` flag.

# RUN: rm -rf %t.build
# RUN: mkdir -p %t.build
# RUN: cp %s %t.build/build.llbuild
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build &> %t.out
# RUN: %{FileCheck} %s --input-file %t.out
#
# CHECK: TOUCH

# Verify that we get a null build.
#
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build &> %t.rebuild.out
# RUN: echo "<<eof>>" >> %t.rebuild.out
# RUN: %{FileCheck} %s --check-prefix=CHECK-REBUILD --input-file %t.rebuild.out
#
# CHECK-REBUILD-NOT: TOUCH
# CHECK-REBUILD: <<eof>>

# Verify that we don't run the command if its output changes.
#
# RUN: touch -r /dev/null %t.build/output
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build &> %t.after-modify.out
# RUN: echo "<<eof>>" >> %t.after-modify.out
# RUN: %{FileCheck} %s --check-prefix=CHECK-AFTER-MODIFY --input-file %t.after-modify.out
#
# CHECK-AFTER-MODIFY-NOT: TOUCH
# CHECK-AFTER-MODIFY: <<eof>>

# Verify that we do get a rebuild if we remove the output.
#
# RUN: rm %t.build/output
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build &> %t.after-remove.out
# RUN: echo "<<eof>>" >> %t.after-remove.out
# RUN: %{FileCheck} %s --check-prefix=CHECK-AFTER-REMOVE --input-file %t.after-remove.out
#
# CHECK-AFTER-REMOVE: TOUCH
# CHECK-AFTER-REMOVE: <<eof>>

client:
  name: basic

targets:
  "": ["<all>"]

commands:
  C.all:
    tool: phony
    inputs: ["output"]
    outputs: ["<all>"]
  C.command-with-modified-output:
    tool: shell
    description: TOUCH
    args: ["touch", "output"]
    outputs: ["output"]
    allow-modified-outputs: true