Add: regression tests

src/go/pt-galera-log-explainer/main_test.go

@@ -0,0 +1,106 @@
+package main
+
+import (
+	"io/ioutil"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strings"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+var toolExecutable = "../../../bin/" + toolname
+
+func TestMain(t *testing.T) {
+	tests := []struct {
+		name string
+		cmd  []string
+		path string
+	}{
+		{
+			name: "upgrade_list_all",
+			cmd:  []string{"list", "--all"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_sst",
+			cmd:  []string{"list", "--sst"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_events",
+			cmd:  []string{"list", "--events"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_views",
+			cmd:  []string{"list", "--views"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_states",
+			cmd:  []string{"list", "--states"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_all_since_until",
+			cmd:  []string{"list", "--all", "--since=2023-03-12T13:13:14.886853Z", "--until=2023-03-12T19:35:07.644570Z"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_all_since",
+			cmd:  []string{"list", "--all", "--since=2023-03-12T13:13:14.886853Z"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_all_until",
+			cmd:  []string{"list", "--all", "--until=2023-03-12T19:35:07.644570Z"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_all_until_hiding_1_node",
+			cmd:  []string{"list", "--all", "--until=2023-03-12T13:13:19.031367Z"},
+			path: "tests/logs/upgrade/*.log",
+		},
+		{
+			name: "upgrade_list_all_until_hiding_2_nodes",
+			cmd:  []string{"list", "--all", "--until=2023-03-12T12:29:51.445280Z"},
+			path: "tests/logs/upgrade/*.log",
+		},
+	}
+
+	for _, test := range tests {
+		filepaths, err := filepath.Glob(test.path)
+		if err != nil {
+			t.Fatalf("error during filepath.Glob(%s): %v", test.path, err)
+		}
+		test.cmd = append(test.cmd, filepaths...)
+		out, err := exec.Command(toolExecutable, test.cmd...).CombinedOutput()
+		if err != nil {
+			t.Fatalf("error executing %s %s: %s: %s", toolExecutable, strings.Join(test.cmd, " "), err.Error(), string(out))
+		}
+		expected, err := ioutil.ReadFile("tests/expected/" + test.name)
+		if err != nil {
+			t.Fatalf("error loading test 'expected' file: %s", err)
+		}
+
+		if !cmp.Equal(out, expected) {
+			t.Errorf("%s: test %s failed: %s\nout: %s", toolname, test.name, strings.Join(test.cmd, " "), cmp.Diff(string(out), string(expected)))
+		}
+	}
+
+}
+
+func TestVersionOption(t *testing.T) {
+	out, err := exec.Command(toolExecutable, "--version").Output()
+	if err != nil {
+		t.Errorf("error executing %s --version: %s", toolname, err.Error())
+	}
+	// We are using MustCompile here, because hard-coded RE should not fail
+	re := regexp.MustCompile(toolname + `\n.*Version v?\d+\.\d+\.\d+\n`)
+	if !re.Match(out) {
+		t.Errorf("%s --version returns wrong result:\n%s", toolname, out)
+	}
+}