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cat_test.go
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cat_test.go
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// Copyright 2018 The gg Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package git
import (
"context"
"io"
"strings"
"testing"
"gg-scm.io/pkg/git/internal/filesystem"
)
func TestCat(t *testing.T) {
gitPath, err := findGit()
if err != nil {
t.Skip("git not found:", err)
}
ctx := context.Background()
env, err := newTestEnv(ctx, gitPath)
if err != nil {
t.Fatal(err)
}
defer env.cleanup()
// Create a repository with a few commits to foo.txt.
// Uses raw commands, as cat is used to verify the state of other APIs.
const (
content1 = "Hello, World!\n"
content2 = "Wut up, world?\n"
wcContent = "This is foo.txt\n"
)
if err := env.g.Init(ctx, "."); err != nil {
t.Fatal(err)
}
if err := env.root.Apply(filesystem.Write("foo.txt", content1)); err != nil {
t.Fatal(err)
}
if err := env.g.Run(ctx, "add", "foo.txt"); err != nil {
t.Fatal(err)
}
if err := env.g.Run(ctx, "commit", "-m", "commit 1"); err != nil {
t.Fatal(err)
}
if err := env.root.Apply(filesystem.Write("foo.txt", content2)); err != nil {
t.Fatal(err)
}
if err := env.g.Run(ctx, "commit", "-a", "-m", "commit 2"); err != nil {
t.Fatal(err)
}
if err := env.root.Apply(filesystem.Write("foo.txt", wcContent)); err != nil {
t.Fatal(err)
}
tests := []struct {
rev string
want string
}{
{"HEAD", content2},
{"HEAD~", content1},
}
for _, test := range tests {
t.Run(test.rev+":foo.txt", func(t *testing.T) {
r, err := env.g.Cat(ctx, test.rev, "foo.txt")
if err != nil {
t.Fatal("Cat error:", err)
}
got, err := io.ReadAll(r)
if string(got) != test.want {
t.Errorf("read content = %q; want %q", got, test.want)
}
if err != nil {
t.Error("Read error:", err)
}
if err := r.Close(); err != nil {
t.Error("Close error:", err)
}
})
}
}
func TestCatDoesNotExist(t *testing.T) {
gitPath, err := findGit()
if err != nil {
t.Skip("git not found:", err)
}
ctx := context.Background()
env, err := newTestEnv(ctx, gitPath)
if err != nil {
t.Fatal(err)
}
defer env.cleanup()
// Create a repository with a single commit.
// Uses raw commands, as cat is used to verify the state of other APIs.
if err := env.g.Init(ctx, "."); err != nil {
t.Fatal(err)
}
if err := env.root.Apply(filesystem.Write("foo.txt", dummyContent)); err != nil {
t.Fatal(err)
}
if err := env.g.Run(ctx, "add", "foo.txt"); err != nil {
t.Fatal(err)
}
if err := env.g.Run(ctx, "commit", "-m", "initial commit"); err != nil {
t.Fatal(err)
}
r, err := env.g.Cat(ctx, "HEAD", "bar.txt")
if err == nil {
t.Error("Cat did not return an error")
} else if got := err.Error(); !strings.Contains(got, "bar.txt") {
t.Errorf("error = %v; want to contain \"bar.txt\"", got)
}
if r != nil {
t.Error("reader != nil")
r.Close()
}
}