tests/BuildSystem/Build/command-dependencies.llbuild

# Check the behavior of command dependencies.
#
# RUN: rm -rf %t.build
# RUN: mkdir -p %t.build
# RUN: touch %t.build/input
# RUN: cp %s %t.build/build.llbuild

# Both commands should run on the initial build.
#
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build > %t.initial.out
# RUN: %{FileCheck} --check-prefix CHECK-INITIAL --input-file %t.initial.out %s
# CHECK-INITIAL: C.output-2
# CHECK-INITIAL: C.output-1
# RUN: diff %t.build/output-1 %t.build/output-2

# No commands should run on a null rebuild.
#
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build > %t.null.out
# RUN: echo EOF >> %t.null.out
# RUN: %{FileCheck} --check-prefix CHECK-NULL --input-file %t.null.out %s
# RUN: diff %t.build/output-1 %t.build/output-2
# CHECK-NULL-NOT: C.output
# CHECK-NULL: EOF

# Forcing the initial command to run should cause them both to run again.
#
# RUN: echo modified >> %t.build/input
# RUN: %{llbuild} buildsystem build --serial --chdir %t.build > %t.rebuild.out
# RUN: cat %t.rebuild.out
# RUN: %{FileCheck} --check-prefix CHECK-REBUILD --input-file %t.rebuild.out %s
# RUN: diff %t.build/output-1 %t.build/output-2
#
# CHECK-REBUILD: C.output-2
# CHECK-REBUILD: C.output-1

client:
  name: basic

targets:
  "": ["<output>"]

nodes:
  "<C.output-2.timestamp>":
    is-command-timestamp: true

commands:
  C.output-1:
    tool: shell
    inputs: ["<C.output-2.timestamp>"]
    outputs: ["<output>"]
    description: C.output-1
    args: cp output-2 output-1

  C.output-2:
    tool: shell
    inputs: ["input"]
    outputs: ["<C.output-2.timestamp>"]
    description: C.output-2
    args: cp input output-2