diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..bcb4231
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,26 @@
+name: Test
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        go-version: [1.21]
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ matrix.go-version }}
+
+    - name: Run tests
+      run: make test
diff --git a/.gitignore b/.gitignore
index 849ddff..047d873 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 dist/
+.bats/
+pomodoro
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..69e7382
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,23 @@
+BATS_VERSION := v1.11.0
+BATS_DIR := .bats
+BATS := $(BATS_DIR)/bin/bats
+BINARY := pomodoro
+
+GO_SOURCES := $(shell find . -name '*.go' -not -path './vendor/*')
+
+.PHONY: test
+test: $(BINARY) $(BATS)
+	$(BATS) test/
+
+$(BINARY): $(GO_SOURCES) go.mod go.sum
+	go build -o $(BINARY) .
+
+$(BATS):
+	@mkdir -p $(BATS_DIR)
+	@echo "Downloading bats-core $(BATS_VERSION)..."
+	@curl -sSL https://github.com/bats-core/bats-core/archive/$(BATS_VERSION).tar.gz | tar xz -C $(BATS_DIR) --strip-components=1
+	@chmod +x $(BATS_DIR)/bin/bats
+
+.PHONY: clean
+clean:
+	rm -rf $(BATS_DIR) $(BINARY)
diff --git a/cmd/root.go b/cmd/root.go
index 0be0557..782e578 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -44,16 +44,18 @@ func init() {
 
 	viper.AutomaticEnv()
 
-	var err error
+	RootCmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {
+		var err error
 
-	client, err = openpomodoro.NewClient(directoryFlag)
-	if err != nil {
-		log.Fatalf("Could not create client: %v", err)
-	}
+		client, err = openpomodoro.NewClient(directoryFlag)
+		if err != nil {
+			log.Fatalf("Could not create client: %v", err)
+		}
 
-	settings, err = client.Settings()
-	if err != nil {
-		log.Fatalf("Could not retrieve settings: %v", err)
+		settings, err = client.Settings()
+		if err != nil {
+			log.Fatalf("Could not retrieve settings: %v", err)
+		}
 	}
 }
 
diff --git a/cmd/start.go b/cmd/start.go
index b2a34e5..18f8d7c 100644
--- a/cmd/start.go
+++ b/cmd/start.go
@@ -27,8 +27,7 @@ func init() {
 		"time ago this Pomodoro started")
 
 	command.Flags().IntVarP(
-		&durationFlag, "duration", "d",
-		int(settings.DefaultPomodoroDuration.Minutes()),
+		&durationFlag, "duration", "d", 0,
 		"duration for this Pomodoro")
 
 	command.Flags().StringArrayVarP(
@@ -43,7 +42,11 @@ func startCmd(cmd *cobra.Command, args []string) error {
 
 	p := openpomodoro.NewPomodoro()
 	p.Description = description
-	p.Duration = time.Duration(durationFlag) * time.Minute
+	if durationFlag == 0 {
+		p.Duration = settings.DefaultPomodoroDuration
+	} else {
+		p.Duration = time.Duration(durationFlag) * time.Minute
+	}
 	p.StartTime = time.Now().Add(-agoFlag)
 	p.Tags = tagsFlag
 
diff --git a/test/amend.bats b/test/amend.bats
new file mode 100644
index 0000000..f9f9da7
--- /dev/null
+++ b/test/amend.bats
@@ -0,0 +1,47 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "amend changes description of current pomodoro" {
+    pomodoro start "Original task"
+    run pomodoro amend "Amended task"
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "Amended task"
+}
+
+@test "amend adds tags to current pomodoro" {
+    pomodoro start "Task"
+    run pomodoro amend -t "work,urgent"
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "tags=work,urgent"
+}
+
+@test "amend changes duration of current pomodoro" {
+    pomodoro start "Task"
+    run pomodoro amend -d 45
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "duration=45"
+}
+
+
+@test "amend creates new current when no current exists" {
+    pomodoro start "Task" --ago 5m
+    pomodoro finish
+    run pomodoro amend "New task"
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "New task"
+}
+
+@test "amend outputs current pomodoro status" {
+    pomodoro start "Task"
+    run pomodoro amend "Amended task"
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "Amended task" ]]
+}
+
+@test "amend with no arguments succeeds" {
+    pomodoro start "Task"
+    run pomodoro amend
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "Task"
+}
diff --git a/test/break.bats b/test/break.bats
new file mode 100644
index 0000000..6e8f8c0
--- /dev/null
+++ b/test/break.bats
@@ -0,0 +1,26 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "break executes break hook before starting timer" {
+    create_hook "break" 'echo "BREAK_HOOK" >> "$TEST_DIR/hook_log"; exit 1'
+
+    run pomodoro break
+    [ "$status" -ne 0 ]
+
+    assert_hook_contains "BREAK_HOOK"
+}
+
+@test "break with custom duration parses correctly" {
+    create_hook "break" 'echo "BREAK_STARTED" >> "$TEST_DIR/hook_log"; exit 1'
+
+    run pomodoro break "10"
+    [ "$status" -ne 0 ]
+
+    assert_hook_contains "BREAK_STARTED"
+}
+
+@test "break with invalid duration fails" {
+    run pomodoro break "invalid"
+    [ "$status" -ne 0 ]
+}
diff --git a/test/cancel.bats b/test/cancel.bats
new file mode 100644
index 0000000..5638c73
--- /dev/null
+++ b/test/cancel.bats
@@ -0,0 +1,35 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "cancel empties current file and removes from history" {
+    pomodoro start "Task to cancel"
+    run pomodoro cancel
+    [ "$status" -eq 0 ]
+    assert_file_empty "current"
+    assert_file_empty "history"
+}
+
+@test "cancel preserves existing history but removes current" {
+    pomodoro start "First task" --ago 5m
+    pomodoro finish
+    pomodoro start "Task to cancel"
+    run pomodoro cancel
+    [ "$status" -eq 0 ]
+
+    assert_file_contains "history" "First task"
+    assert_file_empty "current"
+}
+
+@test "cancel with no current pomodoro succeeds" {
+    run pomodoro cancel
+    [ "$status" -eq 0 ]
+    assert_file_empty "current"
+}
+
+@test "cancel produces no output" {
+    pomodoro start "Test task"
+    run pomodoro cancel
+    [ "$status" -eq 0 ]
+    [ -z "$output" ]
+}
diff --git a/test/clear.bats b/test/clear.bats
new file mode 100644
index 0000000..f88b0d1
--- /dev/null
+++ b/test/clear.bats
@@ -0,0 +1,27 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "clear empties current file and does not affect history" {
+    pomodoro start "First task" --ago 5m
+    pomodoro finish
+    pomodoro start "Second task"
+    run pomodoro clear
+    [ "$status" -eq 0 ]
+
+    assert_file_contains "history" "First task"
+    assert_file_empty "current"
+}
+
+@test "clear with no current pomodoro succeeds" {
+    run pomodoro clear
+    [ "$status" -eq 0 ]
+    assert_file_empty "current"
+}
+
+@test "clear produces no output" {
+    pomodoro start "Test task"
+    run pomodoro clear
+    [ "$status" -eq 0 ]
+    [ -z "$output" ]
+}
diff --git a/test/finish.bats b/test/finish.bats
new file mode 100644
index 0000000..25b3f81
--- /dev/null
+++ b/test/finish.bats
@@ -0,0 +1,45 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "finish moves current pomodoro to history" {
+    pomodoro start "Work session"
+    run pomodoro finish
+    [ "$status" -eq 0 ]
+
+    assert_file_empty "current"
+    assert_file_contains "history" "Work session"
+}
+
+@test "finish records actual elapsed time in history" {
+    pomodoro start "Work session" -d 30 --ago 10m
+    run pomodoro finish
+    [ "$status" -eq 0 ]
+
+    assert_file_contains "history" "Work session"
+    assert_file_contains "history" "duration=10"
+}
+
+@test "finish appends to existing history" {
+    pomodoro start "First task" --ago 5m
+    pomodoro finish
+    pomodoro start "Second task" --ago 3m
+    run pomodoro finish
+    [ "$status" -eq 0 ]
+
+    assert_file_contains "history" "First task"
+    assert_file_contains "history" "Second task"
+}
+
+@test "finish outputs elapsed time" {
+    pomodoro start "Test task" --ago 5m
+    run pomodoro finish
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "5:" ]]
+}
+
+@test "finish with no current pomodoro succeeds" {
+    run pomodoro finish
+    [ "$status" -eq 0 ]
+    assert_file_empty "current"
+}
diff --git a/test/history.bats b/test/history.bats
new file mode 100644
index 0000000..8ed713b
--- /dev/null
+++ b/test/history.bats
@@ -0,0 +1,59 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "history shows nothing when no history exists" {
+    run pomodoro history
+    [ "$status" -eq 0 ]
+    [ -z "$output" ]
+}
+
+@test "history shows completed pomodoros" {
+    pomodoro start "First task" --ago 10m
+    pomodoro finish
+    pomodoro start "Second task" --ago 5m
+    pomodoro finish
+
+    run pomodoro history
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "First task" ]]
+    [[ "$output" =~ "Second task" ]]
+}
+
+@test "history limit flag restricts output" {
+    pomodoro start "Task 1" --ago 15m
+    pomodoro finish
+    pomodoro start "Task 2" --ago 10m
+    pomodoro finish
+    pomodoro start "Task 3" --ago 5m
+    pomodoro finish
+
+    run pomodoro history --limit 2
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "Task 2" ]]
+    [[ "$output" =~ "Task 3" ]]
+    [[ ! "$output" =~ "Task 1" ]]
+}
+
+@test "history shows timestamps and durations" {
+    pomodoro start "Test task" --ago 10m
+    pomodoro finish
+
+    run pomodoro history
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "Test task" ]]
+    [[ "$output" =~ "$(date '+%Y-%m-%d')" ]]
+    [[ "$output" =~ "duration=10" ]]
+}
+
+@test "history with zero limit shows all entries" {
+    pomodoro start "Task 1" --ago 10m
+    pomodoro finish
+    pomodoro start "Task 2" --ago 5m
+    pomodoro finish
+
+    run pomodoro history --limit 0
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "Task 1" ]]
+    [[ "$output" =~ "Task 2" ]]
+}
diff --git a/test/hooks.bats b/test/hooks.bats
new file mode 100644
index 0000000..e7af5c6
--- /dev/null
+++ b/test/hooks.bats
@@ -0,0 +1,92 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "start hook executes when starting pomodoro" {
+    create_hook "start" 'echo "START_HOOK_EXECUTED" >> "$TEST_DIR/hook_log"'
+
+    run pomodoro start "Test task"
+    [ "$status" -eq 0 ]
+
+    assert_hook_contains "START_HOOK_EXECUTED"
+}
+
+@test "stop hook executes when finishing pomodoro" {
+    create_hook "stop" 'echo "STOP_HOOK_EXECUTED" >> "$TEST_DIR/hook_log"'
+
+    pomodoro start "Test task" --ago 5m
+    run pomodoro finish
+    [ "$status" -eq 0 ]
+
+    assert_hook_contains "STOP_HOOK_EXECUTED"
+}
+
+@test "stop hook executes when cancelling pomodoro" {
+    create_hook "stop" 'echo "CANCEL_HOOK_EXECUTED" >> "$TEST_DIR/hook_log"'
+
+    pomodoro start "Test task"
+    run pomodoro cancel
+    [ "$status" -eq 0 ]
+
+    assert_hook_contains "CANCEL_HOOK_EXECUTED"
+}
+
+@test "stop hook executes when clearing pomodoro" {
+    create_hook "stop" 'echo "CLEAR_HOOK_EXECUTED" >> "$TEST_DIR/hook_log"'
+
+    pomodoro start "Test task"
+    run pomodoro clear
+    [ "$status" -eq 0 ]
+
+    assert_hook_contains "CLEAR_HOOK_EXECUTED"
+}
+
+@test "start hook executes when repeating pomodoro" {
+    pomodoro start "Original task" --ago 5m
+    pomodoro finish
+
+    create_hook "start" 'echo "REPEAT_HOOK_EXECUTED" >> "$TEST_DIR/hook_log"'
+
+    run pomodoro repeat
+    [ "$status" -eq 0 ]
+
+    assert_hook_contains "REPEAT_HOOK_EXECUTED"
+}
+
+@test "non-executable hook causes command to fail" {
+    mkdir -p "$TEST_DIR/hooks"
+    echo 'echo "SHOULD_NOT_RUN" >> "$TEST_DIR/hook_log"' > "$TEST_DIR/hooks/start"
+
+    run pomodoro start "Test task"
+    [ "$status" -ne 0 ]
+
+    [ ! -f "$TEST_DIR/hook_log" ]
+}
+
+@test "missing hook does not cause error" {
+    run pomodoro start "Test task"
+    [ "$status" -eq 0 ]
+
+    [ ! -f "$TEST_DIR/hook_log" ]
+}
+
+@test "hook failure does not prevent command from succeeding" {
+    create_hook "start" 'echo "HOOK_RAN" >> "$TEST_DIR/hook_log"; exit 1'
+
+    run pomodoro start "Test task"
+    [ "$status" -ne 0 ]
+
+    assert_hook_contains "HOOK_RAN"
+}
+
+@test "multiple hooks execute in sequence" {
+    create_hook "start" 'echo "START_EXECUTED" >> "$TEST_DIR/hook_log"'
+    create_hook "stop" 'echo "STOP_EXECUTED" >> "$TEST_DIR/hook_log"'
+
+    pomodoro start "Test task" --ago 5m
+    run pomodoro finish
+    [ "$status" -eq 0 ]
+
+    assert_hook_contains "START_EXECUTED"
+    assert_hook_contains "STOP_EXECUTED"
+}
diff --git a/test/repeat.bats b/test/repeat.bats
new file mode 100644
index 0000000..713c2c3
--- /dev/null
+++ b/test/repeat.bats
@@ -0,0 +1,49 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "repeat copies description from last history entry" {
+    pomodoro start "Original task" --ago 5m
+    pomodoro finish
+    run pomodoro repeat
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "Original task"
+}
+
+@test "repeat copies tags from last history entry" {
+    pomodoro start "Task with tags" -t "work,urgent" --ago 5m
+    pomodoro finish
+    run pomodoro repeat
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "work,urgent"
+}
+
+@test "repeat uses default duration" {
+    pomodoro start "Task" -d 45 --ago 10m
+    pomodoro finish
+    run pomodoro repeat
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "duration=25"
+}
+
+@test "repeat creates new timestamp" {
+    pomodoro start "Task" --ago 5m
+    pomodoro finish
+    run pomodoro repeat
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "$(date '+%Y-%m-%d')"
+}
+
+
+@test "repeat outputs current pomodoro status" {
+    pomodoro start "Repeated task" --ago 5m
+    pomodoro finish
+    run pomodoro repeat
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "Repeated task" ]]
+}
+
+@test "repeat with no history fails" {
+    run pomodoro repeat
+    [ "$status" -ne 0 ]
+}
diff --git a/test/settings.bats b/test/settings.bats
new file mode 100644
index 0000000..c2dd87e
--- /dev/null
+++ b/test/settings.bats
@@ -0,0 +1,66 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "start uses default pomodoro duration from settings" {
+    create_settings "default_pomodoro_duration=45"
+    pomodoro start "Task with custom default"
+    assert_file_contains "current" "duration=45"
+}
+
+@test "start uses 25 minutes when no settings file exists" {
+    pomodoro start "Task with system default"
+    assert_file_contains "current" "duration=25"
+}
+
+@test "start explicit duration overrides settings default" {
+    create_settings "default_pomodoro_duration=45"
+    pomodoro start "Task" -d 30
+    assert_file_contains "current" "duration=30"
+}
+
+@test "repeat uses default pomodoro duration from settings" {
+    create_settings "default_pomodoro_duration=50"
+    pomodoro start "Original task" --ago 5m
+    pomodoro finish
+    run pomodoro repeat
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "duration=50"
+}
+
+@test "break uses default break duration from settings" {
+    create_settings "default_break_duration=10"
+    create_hook "break" 'echo "BREAK_HOOK_RAN" >> "$TEST_DIR/hook_log"; exit 1'
+
+    run pomodoro break
+    [ "$status" -ne 0 ]
+    assert_hook_contains "BREAK_HOOK_RAN"
+}
+
+@test "--directory flag uses settings from specified directory" {
+    ALT_DIR="$(mktemp -d)"
+    create_settings_in "$ALT_DIR/settings" "default_pomodoro_duration=60"
+
+    run "$POMODORO_BIN" --directory "$ALT_DIR" start "Task in alt dir"
+    [ "$status" -eq 0 ]
+
+    grep -q "duration=60" "$ALT_DIR/current" || {
+        echo "Expected duration=60 in $ALT_DIR/current"
+        echo "File contents:"
+        cat "$ALT_DIR/current"
+        rm -rf "$ALT_DIR"
+        return 1
+    }
+
+    rm -rf "$ALT_DIR"
+}
+
+@test "settings with multiple values are parsed correctly" {
+    create_settings \
+        "default_pomodoro_duration=35" \
+        "default_break_duration=7" \
+        "daily_goal=10"
+
+    pomodoro start "Multi-setting task"
+    assert_file_contains "current" "duration=35"
+}
diff --git a/test/start.bats b/test/start.bats
new file mode 100644
index 0000000..433ddfd
--- /dev/null
+++ b/test/start.bats
@@ -0,0 +1,48 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "start creates current file" {
+    run pomodoro start
+    [ "$status" -eq 0 ]
+    assert_file_exists "current"
+}
+
+@test "start with description writes description to current file" {
+    run pomodoro start "Important work"
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" 'description="Important work"'
+}
+
+@test "start with tags writes tags to current file" {
+    run pomodoro start -t "work,urgent"
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" 'tags=work,urgent'
+}
+
+@test "start with custom duration writes duration to current file" {
+    run pomodoro start --duration 30
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" 'duration=30'
+}
+
+
+@test "start writes timestamp to current file" {
+    run pomodoro start
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "$(date '+%Y-%m-%d')"
+}
+
+@test "start replaces existing current pomodoro" {
+    pomodoro start "First task"
+    run pomodoro start "Second task"
+    [ "$status" -eq 0 ]
+    assert_file_contains "current" "Second task"
+    ! grep -q "First task" "$TEST_DIR/current"
+}
+
+@test "start outputs current pomodoro status" {
+    run pomodoro start "Test task"
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "Test task" ]]
+}
diff --git a/test/status.bats b/test/status.bats
new file mode 100644
index 0000000..8755e18
--- /dev/null
+++ b/test/status.bats
@@ -0,0 +1,37 @@
+#!/usr/bin/env bats
+
+load test_helper
+
+@test "status shows nothing when no current pomodoro" {
+    run pomodoro status
+    [ "$status" -eq 0 ]
+    [ -z "$output" ]
+}
+
+@test "status shows current pomodoro description" {
+    pomodoro start "Current task"
+    run pomodoro status
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "Current task" ]]
+}
+
+@test "status shows current pomodoro tags" {
+    pomodoro start "Task" -t "work,urgent"
+    run pomodoro status
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "work, urgent" ]]
+}
+
+@test "status shows remaining time for active pomodoro" {
+    pomodoro start "Task" --ago 5m
+    run pomodoro status
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "19:" ]] || [[ "$output" =~ "20:" ]]
+}
+
+@test "status shows exclamation for overdue pomodoro" {
+    pomodoro start "Task" --ago 30m
+    run pomodoro status
+    [ "$status" -eq 0 ]
+    [[ "$output" =~ "❗️" ]]
+}
diff --git a/test/test_helper.bash b/test/test_helper.bash
new file mode 100644
index 0000000..5522f8e
--- /dev/null
+++ b/test/test_helper.bash
@@ -0,0 +1,94 @@
+#!/usr/bin/env bash
+
+export POMODORO_BIN="${BATS_TEST_DIRNAME}/../pomodoro"
+
+setup() {
+    export TEST_DIR="$(mktemp -d)"
+}
+
+teardown() {
+    rm -rf "$TEST_DIR"
+}
+
+pomodoro() {
+    "$POMODORO_BIN" --directory "$TEST_DIR" "$@"
+}
+
+assert_file_exists() {
+    local file="$TEST_DIR/$1"
+    [ -f "$file" ] || {
+        echo "File $file does not exist"
+        return 1
+    }
+}
+
+assert_file_contains() {
+    local file="$TEST_DIR/$1"
+    local content="$2"
+    grep -q "$content" "$file" || {
+        echo "File $file does not contain: $content"
+        echo "File contents:"
+        cat "$file"
+        return 1
+    }
+}
+
+assert_file_empty() {
+    local file="$TEST_DIR/$1"
+    [ ! -s "$file" ] || {
+        echo "File $file is not empty"
+        echo "Contents:"
+        cat "$file"
+        return 1
+    }
+}
+
+create_hook() {
+    local hook_name="$1"
+    local hook_content="$2"
+
+    mkdir -p "$TEST_DIR/hooks"
+    cat > "$TEST_DIR/hooks/$hook_name" << EOF
+#!/bin/bash
+$hook_content
+EOF
+    chmod +x "$TEST_DIR/hooks/$hook_name"
+}
+
+assert_hook_executed() {
+    [ -f "$TEST_DIR/hook_log" ] || {
+        echo "Hook log file not found"
+        return 1
+    }
+}
+
+assert_hook_contains() {
+    assert_hook_executed
+    grep -q "$1" "$TEST_DIR/hook_log" || {
+        echo "Hook log does not contain: $1"
+        echo "Hook log contents:"
+        cat "$TEST_DIR/hook_log"
+        return 1
+    }
+}
+
+create_settings() {
+    local settings_file="$TEST_DIR/settings"
+    local setting_line
+
+    for setting_line in "$@"; do
+        echo "$setting_line" >> "$settings_file"
+    done
+}
+
+create_settings_in() {
+    local settings_file="$1"
+    shift
+    local setting_line
+
+    > "$settings_file"
+
+    for setting_line in "$@"; do
+        echo "$setting_line" >> "$settings_file"
+    done
+}