---
title: Mermaid Diagrams Test
date: 2025-08-20T10:00:00+08:00
collections:
  - Tests
categories:
  - Markdown
  - Shortcodes
tags:
  - Mermaid
  - Diagrams
---

The FixIt theme supports two ways to use Mermaid: code block syntax and shortcode syntax.

## Flowchart

```mermaid
flowchart TD
    A[Start] --> B{Is it?}
    B -->|Yes| C[OK]
    C --> D[Rethink]
    D --> B
    B ---->|No| E[End]
```

<!--more-->

## Sequence Diagram

```mermaid
sequenceDiagram
    participant Alice
    participant Bob
    Alice->>John: Hello John, how are you?
    loop Healthcheck
        John->>John: Fight against hypochondria
    end
    Note right of John: Rational thoughts <br/>prevail!
    John-->>Alice: Great!
    John->>Bob: How about you?
    Bob-->>John: Jolly good!
```

## Gantt Chart

{{< mermaid >}}
gantt
    title A Gantt Diagram
    dateFormat  YYYY-MM-DD
    section Section
    A task           :a1, 2014-01-01, 30d
    Another task     :after a1  , 20d
    section Another
    Task in sec      :2014-01-12  , 12d
    another task      : 24d
{{< /mermaid >}}

## Class Diagram

```mermaid
classDiagram
    Animal <|-- Duck
    Animal <|-- Fish
    Animal <|-- Zebra
    Animal : +int age
    Animal : +String gender
    Animal: +isMammal()
    Animal: +mate()
    class Duck{
        +String beakColor
        +swim()
        +quack()
    }
    class Fish{
        -int sizeInFeet
        -canEat()
    }
    class Zebra{
        +bool is_wild
        +run()
    }
```

## State Diagram

```mermaid
stateDiagram-v2
    [_] --> Still
    Still --> [_]

    Still --> Moving
    Moving --> Still
    Moving --> Crash
    Crash --> [*]
```

## Entity Relationship Diagram

```mermaid
erDiagram
    CUSTOMER ||--o{ ORDER : places
    ORDER ||--|{ LINE-ITEM : contains
    CUSTOMER }|..|{ DELIVERY-ADDRESS : uses

    CUSTOMER {
        string name
        string custNumber
        string sector
    }
    ORDER {
        int orderNumber
        string deliveryAddress
    }
    LINE-ITEM {
        string productCode
        int quantity
        float pricePerUnit
    }
```

## User Journey

{{< mermaid >}}
journey
    title My working day
    section Go to work
      Make tea: 5: Me
      Go upstairs: 3: Me
      Do work: 1: Me, Cat
    section Go home
      Go downstairs: 5: Me
      Sit down: 5: Me
{{< /mermaid >}}

## Git Graph

```mermaid
gitGraph
    commit
    branch hotfix
    checkout hotfix
    commit
    branch develop
    checkout develop
    commit id:"ash" tag:"abc"
    branch featureB
    checkout featureB
    commit type:HIGHLIGHT
    checkout main
    checkout hotfix
    commit type:NORMAL
    checkout develop
    commit type:REVERSE
    checkout featureB
    commit
    checkout main
    merge hotfix
    checkout featureB
    commit
    checkout develop
    branch featureA
    commit
    checkout develop
    merge hotfix
    checkout featureA
    commit
    checkout featureB
    commit
    checkout develop
    merge featureA
    branch release
    checkout release
    commit
    checkout main
    commit
    checkout release
    merge main
    checkout develop
    merge release
```

## Pie Chart

{{< mermaid >}}
pie title What Voldemort doesn't have?
    "FRIENDS" : 2
    "FAMILY" : 3
    "NOSE" : 45
{{< /mermaid >}}

## Quadrant Chart

```mermaid
quadrantChart
    title Reach and influence
    x-axis Low Reach --> High Reach
    y-axis Low Influence --> High Influence
    quadrant-1 We should expand
    quadrant-2 Need to promote
    quadrant-3 Re-evaluate
    quadrant-4 May be improved
    Campaign A: [0.3, 0.6]
    Campaign B: [0.45, 0.23]
    Campaign C: [0.57, 0.69]
    Campaign D: [0.78, 0.34]
    Campaign E: [0.40, 0.34]
```

## Timeline

```mermaid
timeline
    title History of Social Media Platform

    2002 : LinkedIn
    2003 : MySpace
         : Skype
    2004 : Facebook
         : Gmail
    2005 : Youtube
    2006 : Twitter
    2007 : FourSquare
    2008 : Github
    2010 : Instagram
    2011 : Snapchat
    2012 : Discord
```

## Mindmap

```mermaid
mindmap
  root((mindmap))
    Origins
      Long history
      ::icon(fa fa-book)
      Popularisation
        British popular psychology author Tony Buzan
    Research
      On effectiveness<br/>and features
      On Automatic creation
        Uses
            Creative techniques
            Strategic planning
            Argument mapping
    Tools
      Pen and paper
      Mermaid
```

## XY Chart

{{< mermaid >}}
xychart-beta
    title "Sales Revenue"
    x-axis [jan, feb, mar, apr, may, jun, jul, aug, sep, oct, nov, dec]
    y-axis "Revenue (in $)" 4000 --> 11000
    bar [5000, 6000, 7500, 8200, 9500, 10500, 11000, 10200, 9200, 8500, 7000, 6000]
    line [5000, 6000, 7500, 8200, 9500, 10500, 11000, 10200, 9200, 8500, 7000, 6000]
{{< /mermaid >}}

## Requirement Diagram

```mermaid
requirementDiagram

    requirement test_req {
    id: 1
    text: the test text.
    risk: high
    verifymethod: test
    }

    element test_entity {
    type: simulation
    }

    test_entity - satisfies -> test_req
```

## C4 Architecture

```mermaid
C4Context
      title System Context diagram for Internet Banking System
      Enterprise_Boundary(b0, "BankBoundary0") {
        Person(customerA, "Banking Customer A", "A customer of the bank, with personal bank accounts.")
        Person(customerB, "Banking Customer B")
        Person_Ext(customerC, "Banking Customer C", "desc")

        Person(customerD, "Banking Customer D", "A customer of the bank, <br/> with personal bank accounts.")

        System(SystemAA, "Internet Banking System", "Allows customers to view information about their bank accounts, and make payments.")

        Enterprise_Boundary(b1, "BankBoundary") {

          SystemDb_Ext(SystemE, "Mainframe Banking System", "Stores all of the core banking information about customers, accounts, transactions, etc.")

          System_Boundary(b2, "BankBoundary2") {
            System(SystemA, "Banking System A")
            System(SystemB, "Banking System B", "A system of the bank, with personal bank accounts. next line.")
          }

          System_Ext(SystemC, "E-mail system", "The internal Microsoft Exchange e-mail system.")
          SystemDb(SystemD, "Banking System D Database", "A system of the bank, with personal bank accounts.")

          Boundary(b3, "BankBoundary3", "boundary") {
            SystemQueue(SystemF, "Banking System F Queue", "A system of the bank.")
            SystemQueue_Ext(SystemG, "Banking System G Queue", "A system of the bank, with personal bank accounts.")
          }
        }
      }

      BiRel(customerA, SystemAA, "Uses")
      BiRel(SystemAA, SystemE, "Uses")
      Rel(SystemAA, SystemC, "Sends e-mails", "SMTP")
      Rel(SystemC, customerA, "Sends e-mails to")

      UpdateElementStyle(customerA, $fontColor="red", $bgColor="grey", $borderColor="red")
      UpdateRelStyle(customerA, SystemAA, $textColor="blue", $lineColor="blue", $offsetX="5")
      UpdateRelStyle(SystemAA, SystemE, $textColor="blue", $lineColor="blue", $offsetY="-10")
      UpdateRelStyle(SystemAA, SystemC, $textColor="blue", $lineColor="blue", $offsetY="-40", $offsetX="-50")
      UpdateRelStyle(SystemC, customerA, $textColor="red", $lineColor="red", $offsetX="-50", $offsetY="20")

      UpdateLayoutConfig($c4ShapeInRow="3", $c4BoundaryInRow="1")
```

## ZenUML

{{< mermaid >}}
zenuml
    title Demo
    Alice->John: Hello John, how are you?
    John->Alice: Great!
    Alice->John: See you later!
{{< /mermaid >}}

## Sankey Diagram

```mermaid
---
config:
  sankey:
    showValues: false
---
sankey-beta

Agricultural 'waste',Bio-conversion,124.729
Bio-conversion,Liquid,0.597
Bio-conversion,Losses,26.862
Bio-conversion,Solid,280.322
Bio-conversion,Gas,81.144
Biofuel imports,Liquid,35
Biomass imports,Solid,35
Coal imports,Coal,11.606
Coal reserves,Coal,63.965
Coal,Solid,75.571
District heating,Industry,10.639
District heating,Heating and cooling - commercial,22.505
District heating,Heating and cooling - homes,46.184
Electricity grid,Over generation / exports,104.453
Electricity grid,Heating and cooling - homes,113.726
Electricity grid,H2 conversion,27.14
Electricity grid,Industry,342.165
Electricity grid,Road transport,37.797
Electricity grid,Agriculture,4.412
Electricity grid,Heating and cooling - commercial,40.858
Electricity grid,Losses,56.691
Electricity grid,Rail transport,7.863
Electricity grid,Lighting & appliances - commercial,90.008
Electricity grid,Lighting & appliances - homes,93.494
Gas imports,Ngas,40.719
Gas reserves,Ngas,82.233
Gas,Heating and cooling - commercial,0.129
Gas,Losses,1.401
Gas,Thermal generation,151.891
Gas,Agriculture,2.096
Gas,Industry,48.58
Geothermal,Electricity grid,7.013
H2 conversion,H2,20.897
H2 conversion,Losses,6.242
H2,Road transport,20.897
Hydro,Electricity grid,6.995
Liquid,Industry,121.066
Liquid,International shipping,128.69
Liquid,Road transport,135.835
Liquid,Domestic aviation,14.458
Liquid,International aviation,206.267
Liquid,Agriculture,3.64
Liquid,National navigation,33.218
Liquid,Rail transport,4.413
Marine algae,Bio-conversion,4.375
Ngas,Gas,122.952
Nuclear,Thermal generation,839.978
Oil imports,Oil,504.287
Oil reserves,Oil,107.703
Oil,Liquid,611.99
Other waste,Solid,56.587
Other waste,Bio-conversion,77.81
Pumped heat,Heating and cooling - homes,193.026
Pumped heat,Heating and cooling - commercial,70.672
Solar PV,Electricity grid,59.901
Solar Thermal,Heating and cooling - homes,19.263
Solar,Solar Thermal,19.263
Solar,Solar PV,59.901
Solid,Agriculture,0.882
Solid,Thermal generation,400.12
Solid,Industry,46.477
Thermal generation,Electricity grid,525.531
Thermal generation,Losses,787.129
Thermal generation,District heating,79.329
Tidal,Electricity grid,9.452
UK land based bioenergy,Bio-conversion,182.01
Wave,Electricity grid,19.013
Wind,Electricity grid,289.366
```

## Block Diagram

{{< mermaid >}}
block-beta
columns 1
  db(("DB"))
  blockArrowId6<["&nbsp;&nbsp;&nbsp;"]>(down)
  block:ID
    A
    B["A wide one in the middle"]
    C
  end
  space
  D
  ID --> D
  C --> D
  style B fill:#969,stroke:#333,stroke-width:4px
{{< /mermaid >}}

## Packet Diagram

```mermaid
packet-beta
title Sample packet
0-15: "Source Port"
16-31: "Destination Port"
32-63: "Sequence Number"
64-95: "Acknowledgment Number"
96-99: "Data Offset"
100-105: "Reserved"
106: "URG"
107: "ACK"
108: "PSH"
109: "RST"
110: "SYN"
111: "FIN"
112-127: "Window"
128-143: "Checksum"
144-159: "Urgent Pointer"
160-191: "Options and Padding"
192-223: "Data (variable length)"
```

## Kanban

```mermaid
kanban
    Todo
        [Create a git repository]
        [Write some code]
        [Commit the code]

    In Progress
        [Push to main]

    Done
        [Merge PR]
```

## Architecture Diagram

```mermaid
architecture-beta
    group api(cloud)[API]

    service db(database)[Database] in api
    service disk1(disk)[Storage] in api
    service disk2(disk)[Storage] in api
    service server(server)[Server] in api

    db:L -- R:server
    disk1:T -- B:server
    disk2:T -- B:db
```

## Radar Chart

```mermaid
---
title: "Grades"
---
radar-beta
  axis m["Math"], s["Science"], e["English"]
  axis h["History"], g["Geography"], a["Art"]
  curve a["Alice"]{85, 90, 80, 70, 75, 90}
  curve b["Bob"]{70, 75, 85, 80, 90, 85}

  max 100
  min 0
```

## Treemap

```mermaid
---
config:
  treemap:
    valueFormat: '$0,0'
---
treemap-beta
"Budget"
    "Operations"
        "Salaries": 700000
        "Equipment": 200000
        "Supplies": 100000
    "Marketing"
        "Advertising": 400000
        "Events": 100000
```

---

The above test cases cover the main Mermaid diagram types, including:

**Core Diagrams:**

- Flowcharts, Sequence Diagrams, Gantt Charts
- Class Diagrams, State Diagrams, Entity Relationship Diagrams
- User Journey, Git Graph, Pie Charts

**Advanced Diagrams:**

- Quadrant Charts, Timeline, Mindmaps
- XY Charts, Requirement Diagrams, C4 Architecture
- ZenUML, Sankey, Block Diagrams

**Experimental Diagrams (🔥):**

- Packet, Kanban, Architecture
- Radar Charts, Treemap

Each diagram type provides examples using both code block and shortcode syntax.
