tests/BuildSystem/Build/allow-missing-inputs.llbuild

# Check the handling of "allow-missing-inputs".

# 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: TEST INPUT EXISTENCE
# CHECK-NEXT: INPUT DOES NOT EXIST

# Verify that we get a null build, despite the input missing (its state has not changed).
#
# 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: TEST INPUT EXISTENCE
# CHECK-REBUILD-NOT: INPUT DOES NOT EXIST
# CHECK-REBUILD: <<eof>>

# Verify that we *do* rebuild if we make the input appear.
#
# RUN: touch %t.build/input
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build &> %t.after-create.out
# RUN: %{FileCheck} %s --check-prefix=CHECK-AFTER-CREATE --input-file %t.after-create.out
#
# CHECK-AFTER-CREATE: TEST INPUT EXISTENCE
# CHECK-AFTER-CREATE: INPUT DOES EXIST

client:
  name: basic

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

commands:
  C1:
    tool: shell
    inputs: ["input"]
    outputs: ["<all>"]
    description: TEST INPUT EXISTENCE
    args: test -f input && echo "INPUT DOES EXIST" || echo "INPUT DOES NOT EXIST"
    allow-missing-inputs: true