| # RUN: echo foo > %t.foo |
| # RUN: echo bar > %t.bar |
| |
| # Check output pipe. |
| # RUN: diff %t.foo %t.foo | FileCheck -allow-empty -check-prefix=EMPTY %s |
| # RUN: diff -u %t.foo %t.bar | FileCheck %s && false || true |
| |
| # Check input pipe. |
| # RUN: cat %t.foo | diff -u - %t.foo |
| # RUN: cat %t.foo | diff -u %t.foo - |
| # RUN: cat %t.bar | diff -u %t.foo - && false || true |
| # RUN: cat %t.bar | diff -u - %t.foo && false || true |
| |
| # Check output and input pipes at the same time. |
| # RUN: cat %t.foo | diff - %t.foo | FileCheck -allow-empty -check-prefix=EMPTY %s |
| # RUN: cat %t.bar | diff -u %t.foo - | FileCheck %s && false || true |
| |
| # Fail so lit will print output. |
| # RUN: false |
| |
| # CHECK: @@ |
| # CHECK-NEXT: -foo |
| # CHECK-NEXT: +bar |
| |
| # EMPTY-NOT: {{.}} |