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// Copyright 2019 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package main
import (
"os"
"path"
"reflect"
"testing"
)
func TestCommandlineFlagParsing(t *testing.T) {
withTestContext(t, func(ctx *testContext) {
type testCase struct {
extraFlags []string
// If this is nonempty, expectedValue is ignored. Otherwise, expectedValue
// has the expected value for the flag, and expectedCommand has the expected
// (extra) flags in the builder after filtering.
expectedError string
expectedValue string
expectedExtraFlags []string
}
const flagName = "--flag"
testCases := []testCase{
{
extraFlags: nil,
expectedError: errNoSuchCmdlineArg.Error(),
},
{
extraFlags: []string{flagName + "a"},
expectedError: errNoSuchCmdlineArg.Error(),
},
{
extraFlags: []string{flagName},
expectedError: "flag \"" + flagName + "\" requires a value",
},
{
extraFlags: []string{flagName, "foo"},
expectedValue: "foo",
expectedExtraFlags: nil,
},
{
extraFlags: []string{flagName + "=foo"},
expectedValue: "foo",
expectedExtraFlags: nil,
},
{
extraFlags: []string{flagName + "="},
expectedValue: "",
expectedExtraFlags: nil,
},
{
extraFlags: []string{flagName + "=foo", flagName + "=bar"},
expectedValue: "foo",
expectedExtraFlags: []string{flagName + "=bar"},
},
}
for _, testCase := range testCases {
cmd := ctx.newCommand(gccX86_64, testCase.extraFlags...)
builder, err := newCommandBuilder(ctx, ctx.cfg, cmd)
if err != nil {
t.Fatalf("Failed creating a command builder: %v", err)
}
flagValue, err := removeOneUserCmdlineFlagWithValue(builder, flagName)
if err != nil {
if testCase.expectedError == "" {
t.Errorf("given extra flags %q, got unexpected error removing %q: %v", testCase.extraFlags, flagName, err)
continue
}
if e := err.Error(); e != testCase.expectedError {
t.Errorf("given extra flags %q, got error %q; wanted %q", testCase.extraFlags, e, testCase.expectedError)
}
continue
}
if testCase.expectedError != "" {
t.Errorf("given extra flags %q, got no error, but expected %q", testCase.extraFlags, testCase.expectedError)
continue
}
if flagValue != testCase.expectedValue {
t.Errorf("given extra flags %q, got value %q, but expected %q", testCase.extraFlags, flagValue, testCase.expectedValue)
}
currentFlags := []string{}
// Chop off the first arg, which should just be the compiler
for _, a := range builder.args {
currentFlags = append(currentFlags, a.value)
}
sameFlags := (len(currentFlags) == 0 && len(testCase.expectedExtraFlags) == 0) || reflect.DeepEqual(currentFlags, testCase.expectedExtraFlags)
if !sameFlags {
t.Errorf("given extra flags %q, got post-removal flags %q, but expected %q", testCase.extraFlags, currentFlags, testCase.expectedExtraFlags)
}
}
})
}
func TestCallGomaccIfEnvIsGivenAndValid(t *testing.T) {
withGomaccTestContext(t, func(ctx *testContext, gomaPath string) {
ctx.env = []string{"GOMACC_PATH=" + gomaPath}
cmd := ctx.must(callCompiler(ctx, ctx.cfg,
ctx.newCommand(gccX86_64, mainCc)))
if err := verifyPath(cmd, gomaPath); err != nil {
t.Error(err)
}
if err := verifyArgOrder(cmd, gccX86_64+".real", mainCc); err != nil {
t.Error(err)
}
})
}
func TestOmitGomaccIfEnvIsGivenButInvalid(t *testing.T) {
withGomaccTestContext(t, func(ctx *testContext, gomaPath string) {
if err := os.Remove(gomaPath); err != nil {
t.Fatalf("failed removing fake goma file at %q: %v", gomaPath, err)
}
ctx.env = []string{"GOMACC_PATH=" + gomaPath}
cmd := ctx.must(callCompiler(ctx, ctx.cfg,
ctx.newCommand(gccX86_64, mainCc)))
if err := verifyPath(cmd, gccX86_64+".real"); err != nil {
t.Error(err)
}
})
}
func TestCallGomaccIfArgIsGivenAndValid(t *testing.T) {
withGomaccTestContext(t, func(ctx *testContext, gomaPath string) {
cmd := ctx.must(callCompiler(ctx, ctx.cfg,
ctx.newCommand(gccX86_64, mainCc, "--gomacc-path", gomaPath)))
if err := verifyPath(cmd, gomaPath); err != nil {
t.Error(err)
}
if err := verifyArgCount(cmd, 0, "--gomacc-path"); err != nil {
t.Error(err)
}
if err := verifyArgCount(cmd, 0, gomaPath); err != nil {
t.Error(err)
}
if err := verifyArgOrder(cmd, gccX86_64+".real", mainCc); err != nil {
t.Error(err)
}
})
}
func TestOmitGomaccIfArgIsGivenButInvalid(t *testing.T) {
withGomaccTestContext(t, func(ctx *testContext, gomaPath string) {
if err := os.Remove(gomaPath); err != nil {
t.Fatalf("failed removing fake goma file at %q: %v", gomaPath, err)
}
cmd := ctx.must(callCompiler(ctx, ctx.cfg,
ctx.newCommand(gccX86_64, mainCc, "--gomacc-path", gomaPath)))
if err := verifyPath(cmd, gccX86_64+".real"); err != nil {
t.Error(err)
}
})
}
func TestErrorOnGomaccArgWithoutValue(t *testing.T) {
withTestContext(t, func(ctx *testContext) {
stderr := ctx.mustFail(callCompiler(ctx, ctx.cfg,
ctx.newCommand(gccX86_64, mainCc, "--gomacc-path")))
if err := verifyNonInternalError(stderr, "flag \"--gomacc-path\" requires a value"); err != nil {
t.Error(err)
}
})
}
func TestOmitGomaccByDefault(t *testing.T) {
withTestContext(t, func(ctx *testContext) {
cmd := ctx.must(callCompiler(ctx, ctx.cfg,
ctx.newCommand(gccX86_64, mainCc)))
if err := verifyPath(cmd, gccX86_64+".real"); err != nil {
t.Error(err)
}
})
}
func withGomaccTestContext(t *testing.T, f func(*testContext, string)) {
withTestContext(t, func(ctx *testContext) {
gomaPath := path.Join(ctx.tempDir, "gomacc")
// Create a file so the gomacc path is valid.
ctx.writeFile(gomaPath, "")
f(ctx, gomaPath)
})
}
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