Add -print-cmdline and -print-config

BUG=chromium:773875
TEST=unit test

Change-Id: Ib25e582257694f3a3457795873a249735e3aaf82
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/1697931
Tested-by: Tobias Bosch <tbosch@google.com>
Reviewed-by: George Burgess <gbiv@chromium.org>

1 files changed, 81 insertions, 0 deletions

diff --git a/compiler_wrapper/print_cmdline_flag_test.go b/compiler_wrapper/print_cmdline_flag_test.go
new file mode 100644
index 00000000..f3ccd723
--- /dev/null
+++ b/compiler_wrapper/print_cmdline_flag_test.go
@@ -0,0 +1,81 @@
+package main
+
+import (
+	"fmt"
+	"regexp"
+	"testing"
+)
+
+func TestRemovePrintCmdlineArg(t *testing.T) {
+	withTestContext(t, func(ctx *testContext) {
+		cmd := ctx.must(callCompiler(ctx, ctx.cfg, ctx.newCommand(gccX86_64, "-print-cmdline", mainCc)))
+		if err := verifyArgCount(cmd, 0, "-print-cmdline"); err != nil {
+			t.Error(err)
+		}
+	})
+}
+
+func TestPrintCompilerCommand(t *testing.T) {
+	withTestContext(t, func(ctx *testContext) {
+		ctx.must(callCompiler(ctx, ctx.cfg, ctx.newCommand(gccX86_64, "-print-cmdline", mainCc)))
+		if matched, _ := regexp.MatchString(`cd '.*' && '.*/x86_64-cros-linux-gnu-gcc.real'.*'main.cc'`, ctx.stderrString()); !matched {
+			t.Errorf("sub command not printed to stderr. Got: %s", ctx.stderrString())
+		}
+	})
+}
+
+func TestPrintNestedCommand(t *testing.T) {
+	withTestContext(t, func(ctx *testContext) {
+		// Note: -clang-syntax calls clang to check the syntax
+		ctx.must(callCompiler(ctx, ctx.cfg, ctx.newCommand(gccX86_64, "-print-cmdline", "-clang-syntax", mainCc)))
+		if matched, _ := regexp.MatchString(`cd '.*' && '.*usr/bin/clang'.*'main.cc'.*'-fsyntax-only'`, ctx.stderrString()); !matched {
+			t.Errorf("sub command not printed to stderr. Got: %s", ctx.stderrString())
+		}
+	})
+}
+
+func TestPrintCmdWd(t *testing.T) {
+	withTestContext(t, func(ctx *testContext) {
+		printCmd(ctx, &command{
+			path: "/somepath",
+		})
+		if ctx.stderrString() != fmt.Sprintf("cd '%s' && '/somepath'\n", ctx.tempDir) {
+			t.Errorf("unexpected result. Got: %s", ctx.stderrString())
+		}
+	})
+}
+
+func TestPrintCmdAbsolutePath(t *testing.T) {
+	withTestContext(t, func(ctx *testContext) {
+		printCmd(ctx, &command{
+			path: "somepath",
+		})
+		if ctx.stderrString() != fmt.Sprintf("cd '%s' && '%s/somepath'\n", ctx.tempDir, ctx.tempDir) {
+			t.Errorf("unexpected result. Got: %s", ctx.stderrString())
+		}
+	})
+}
+
+func TestPrintCmdEnvUpdates(t *testing.T) {
+	withTestContext(t, func(ctx *testContext) {
+		printCmd(ctx, &command{
+			path:       "/somepath",
+			envUpdates: []string{"a=b"},
+		})
+		if ctx.stderrString() != fmt.Sprintf("cd '%s' && env 'a=b' '/somepath'\n", ctx.tempDir) {
+			t.Errorf("unexpected result. Got: %s", ctx.stderrString())
+		}
+	})
+}
+
+func TestPrintCmdArgs(t *testing.T) {
+	withTestContext(t, func(ctx *testContext) {
+		printCmd(ctx, &command{
+			path: "/somepath",
+			args: []string{"-a"},
+		})
+		if ctx.stderrString() != fmt.Sprintf("cd '%s' && '/somepath' '-a'\n", ctx.tempDir) {
+			t.Errorf("unexpected result. Got: %s", ctx.stderrString())
+		}
+	})
+}