| // RUN: env NO_COLOR=1 %clang -### %s 2>&1 | FileCheck --check-prefix=NO-COLOR %s |
| // RUN: env NO_COLOR=1 %clang -fcolor-diagnostics -### %s 2>&1 | FileCheck --check-prefix=COLOR %s |
| // RUN: env NO_COLOR=1 %clang -fdiagnostics-color=auto -### %s 2>&1 | FileCheck --check-prefix=NO-COLOR %s |
| // RUN: env NO_COLOR=1 %clang -fdiagnostics-color=always -### %s 2>&1 | FileCheck --check-prefix=COLOR %s |
| // RUN: env NO_COLOR=1 %clang -fdiagnostics-color=never -### %s 2>&1 | FileCheck --check-prefix=NO-COLOR %s |
| |
| // Note, the value of the environment variable does not matter, only that it is defined and not empty. |
| // RUN: env NO_COLOR=0 %clang -### %s 2>&1 | FileCheck --check-prefix=NO-COLOR %s |
| // Note, an empty value means we automatically decide whether to enable colors or not, and lit tests |
| // are not run in a PTY, so colors are disabled by default. There is no easy way for us to test this |
| // configuration where auto enables colors. |
| // RUN: env NO_COLOR= %clang -### %s 2>&1 | FileCheck --check-prefix=NO-COLOR %s |
| |
| int main(void) {} |
| |
| // COLOR: -fcolor-diagnostics |
| // NO-COLOR-NOT: -fcolor-diagnostics |
