feat: add oonireport client (#682)

The oonireport client (re-)uploads a measurement report file. This can be helpful when the measurement was not uploaded at runtime.

Usage: `./oonireport upload <file>`, where `<file>` is a json(l) file containing one OONI measurement per line.

This pull request refers to https://github.com/ooni/probe/issues/2003 and https://github.com/ooni/probe/issues/950.

Co-authored-by: Simone Basso <bassosimone@gmail.com>

internal/cmd/oonireport/oonireport_test.go

@@ -0,0 +1,85 @@
+package main
+
+import (
+	"context"
+	"testing"
+)
+
+func TestCanOpen(t *testing.T) {
+	ok := canOpen("testdata/testmeasurement.json")
+	if !ok {
+		t.Fatal("unexpected error")
+	}
+}
+
+func TestReadLines(t *testing.T) {
+	lines := readLines("testdata/testmeasurement.json")
+	if lines == nil {
+		t.Fatal("unexpected error")
+	}
+	if len(lines) != 2 {
+		t.Fatal("unexpected number of measurements")
+	}
+}
+
+func TestNewSessionAndSubmitter(t *testing.T) {
+	ctx := context.Background()
+	sess := newSession(ctx)
+	if sess == nil {
+		t.Fatal("unexpected nil session")
+	}
+	subm := newSubmitter(sess, ctx)
+	if subm == nil {
+		t.Fatal("unexpected nil submitter")
+	}
+}
+
+func TestToMeasurement(t *testing.T) {
+	lines := readLines("testdata/testmeasurement.json")
+	line := lines[0]
+	mm := toMeasurement(line)
+	if mm == nil {
+		t.Fatal("unexpected error")
+	}
+}
+
+func TestMainMissingFile(t *testing.T) {
+	defer func() {
+		var s interface{}
+		if s = recover(); s == nil {
+			t.Fatal("expected a panic here")
+		}
+		if s != "Cannot open measurement file" {
+			t.Fatal("unexpected panic message")
+		}
+	}()
+	mainWithArgs([]string{"upload", "notexist.json"})
+}
+
+func TestMainEmptyFile(t *testing.T) {
+	defer func() {
+		var s interface{}
+		if s = recover(); s != nil {
+			t.Fatal("unexpected panic")
+		}
+	}()
+	mainWithArgs([]string{"upload", "testdata/noentries.json"})
+}
+
+func TestSubmitAllFails(t *testing.T) {
+	ctx := context.Background()
+	sess := newSession(ctx)
+	subm := newSubmitter(sess, ctx)
+	lines := readLines("testdata/testmeasurement.json")
+
+	ctx, cancel := context.WithCancel(ctx)
+	cancel() // fail immediately
+
+	n, err := submitAll(ctx, lines, subm)
+	if err == nil {
+		t.Fatal("expected an error here")
+	}
+	if n != 0 {
+		t.Fatal("nothing should be submitted here")
+	}
+}